The process whereby calcium salts are deposited in the dental enamel. The process is normal in the development of bones and teeth. (Boucher's Clinical Dental Terminology, 4th ed, p43)
One of a set of bone-like structures in the mouth used for biting and chewing.
Pathologic deposition of calcium salts in tissues.
Deposition of calcium into the blood vessel structures. Excessive calcification of the vessels are associated with ATHEROSCLEROTIC PLAQUES formation particularly after MYOCARDIAL INFARCTION (see MONCKEBERG MEDIAL CALCIFIC SCLEROSIS) and chronic kidney diseases which in turn increase VASCULAR STIFFNESS.
Process by which organic tissue becomes hardened by the physiologic deposit of calcium salts.
The failure to retain teeth as a result of disease or injury.
The collective tissues from which an entire tooth is formed, including the DENTAL SAC; ENAMEL ORGAN; and DENTAL PAPILLA. (From Jablonski, Dictionary of Dentistry, 1992)
The teeth of the first dentition, which are shed and replaced by the permanent teeth.
The upper part of the tooth, which joins the lower part of the tooth (TOOTH ROOT) at the cervix (TOOTH CERVIX) at a line called the cementoenamel junction. The entire surface of the crown is covered with enamel which is thicker at the extremity and becomes progressively thinner toward the cervix. (From Jablonski, Dictionary of Dentistry, 1992, p216)
The part of a tooth from the neck to the apex, embedded in the alveolar process and covered with cementum. A root may be single or divided into several branches, usually identified by their relative position, e.g., lingual root or buccal root. Single-rooted teeth include mandibular first and second premolars and the maxillary second premolar teeth. The maxillary first premolar has two roots in most cases. Maxillary molars have three roots. (Jablonski, Dictionary of Dentistry, 1992, p690)
The emergence of a tooth from within its follicle in the ALVEOLAR PROCESS of the MAXILLA or MANDIBLE into the ORAL CAVITY. (Boucher's Clinical Dental Terminology, 4th ed)
An extra tooth, erupted or unerupted, resembling or unlike the other teeth in the group to which it belongs. Its presence may cause malposition of adjacent teeth or prevent their eruption.
Congenital absence of or defects in structures of the teeth.
Loss of the tooth substance by chemical or mechanical processes
The surgical removal of a tooth. (Dorland, 28th ed)
A tooth from which the dental pulp has been removed or is necrotic. (Boucher, Clinical Dental Terminology, 4th ed)
The most posterior teeth on either side of the jaw, totaling eight in the deciduous dentition (2 on each side, upper and lower), and usually 12 in the permanent dentition (three on each side, upper and lower). They are grinding teeth, having large crowns and broad chewing surfaces. (Jablonski, Dictionary of Dentistry, 1992, p821)
Pathological processes involving any part of the AORTA.
A tooth that is prevented from erupting by a physical barrier, usually other teeth. Impaction may also result from orientation of the tooth in an other than vertical position in the periodontal structures.
Any change in the hue, color, or translucency of a tooth due to any cause. Restorative filling materials, drugs (both topical and systemic), pulpal necrosis, or hemorrhage may be responsible. (Jablonski, Dictionary of Dentistry, 1992, p253)
A normal developing tooth which has not yet perforated the oral mucosa or one that fails to erupt in the normal sequence or time interval expected for the type of tooth in a given gender, age, or population group.
Any of the eight frontal teeth (four maxillary and four mandibular) having a sharp incisal edge for cutting food and a single root, which occurs in man both as a deciduous and a permanent tooth. (Jablonski, Dictionary of Dentistry, 1992, p820)
The process of TOOTH formation. It is divided into several stages including: the dental lamina stage, the bud stage, the cap stage, and the bell stage. Odontogenesis includes the production of tooth enamel (AMELOGENESIS), dentin (DENTINOGENESIS), and dental cementum (CEMENTOGENESIS).
A fetuin subtype that is synthesized by HEPATOCYTES and secreted into the circulation. It plays a major role in preventing CALCIUM precipitation in the BLOOD.
The constricted part of the tooth at the junction of the crown and root or roots. It is often referred to as the cementoenamel junction (CEJ), the line at which the cementum covering the root of a tooth and the enamel of the tooth meet. (Jablonski, Dictionary of Dentistry, 1992, p530, p433)
A hard thin translucent layer of calcified substance which envelops and protects the dentin of the crown of the tooth. It is the hardest substance in the body and is almost entirely composed of calcium salts. Under the microscope, it is composed of thin rods (enamel prisms) held together by cementing substance, and surrounded by an enamel sheath. (From Jablonski, Dictionary of Dentistry, 1992, p286)
Pathological processes involving any of the BLOOD VESSELS in the cardiac or peripheral circulation. They include diseases of ARTERIES; VEINS; and rest of the vasculature system in the body.
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
Physiologic loss of the primary dentition. (Zwemer, Boucher's Clinical Dental Terminology, 4th ed)
The third tooth to the left and to the right of the midline of either jaw, situated between the second INCISOR and the premolar teeth (BICUSPID). (Jablonski, Dictionary of Dentistry, 1992, p817)
Partial or complete displacement of a tooth from its alveolar support. It is commonly the result of trauma. (From Boucher's Clinical Dental Terminology, 4th ed, p312)
Two teeth united during development by the union of their tooth germs; the teeth may be joined by the enamel of their crowns, by their root dentin, or by both.
A richly vascularized and innervated connective tissue of mesodermal origin, contained in the central cavity of a tooth and delimited by the dentin, and having formative, nutritive, sensory, and protective functions. (Jablonski, Dictionary of Dentistry, 1992)
Pathological conditions involving any of the various HEART VALVES and the associated structures (PAPILLARY MUSCLES and CHORDAE TENDINEAE).
Carbonic acid calcium salt (CaCO3). An odorless, tasteless powder or crystal that occurs in nature. It is used therapeutically as a phosphate buffer in hemodialysis patients and as a calcium supplement.
One of the eight permanent teeth, two on either side in each jaw, between the canines (CUSPID) and the molars (MOLAR), serving for grinding and crushing food. The upper have two cusps (bicuspid) but the lower have one to three. (Jablonski, Dictionary of Dentistry, 1992, p822)
Solid fixation of a tooth resulting from fusion of the cementum and alveolar bone, with obliteration of the periodontal ligament. It is uncommon in the deciduous dentition and very rare in permanent teeth. (Jablonski's Dictionary of Dentistry, 1992)
Progressive loss of the hard substance of a tooth by chemical processes that do not involve bacterial action. (Jablonski, Dictionary of Dentistry, 1992, p296)
A hollow part of the alveolar process of the MAXILLA or MANDIBLE where each tooth fits and is attached via the periodontal ligament.
The hard portion of the tooth surrounding the pulp, covered by enamel on the crown and cementum on the root, which is harder and denser than bone but softer than enamel, and is thus readily abraded when left unprotected. (From Jablonski, Dictionary of Dentistry, 1992)
Restorations of metal, porcelain, or plastic made to fit a cavity preparation, then cemented into the tooth. Onlays are restorations which fit into cavity preparations and overlay the occlusal surface of a tooth or teeth. Onlays are retained by frictional or mechanical factors.
Synthetic resins, containing an inert filler, that are widely used in dentistry.
The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility.
A restoration designed to remain in service for not less than 20 to 30 years, usually made of gold casting, cohesive gold, or amalgam. (Jablonski, Dictionary of Dentistry, 1992)
Dental cements composed either of polymethyl methacrylate or dimethacrylate, produced by mixing an acrylic monomer liquid with acrylic polymers and mineral fillers. The cement is insoluble in water and is thus resistant to fluids in the mouth, but is also irritating to the dental pulp. It is used chiefly as a luting agent for fabricated and temporary restorations. (Jablonski's Dictionary of Dentistry, 1992, p159)
Flat keratinous structures found on the skin surface of birds. Feathers are made partly of a hollow shaft fringed with barbs. They constitute the plumage.
An element with atomic symbol Cd, atomic number 48, and atomic weight 114. It is a metal and ingestion will lead to CADMIUM POISONING.
A plant genus of the family LAMIACEAE that is an ingredient of Banxia Houpu (DRUGS, CHINESE HERBAL).
Plutonium. A naturally radioactive element of the actinide metals series. It has the atomic symbol Pu, atomic number 94, and atomic weight 242. Plutonium is used as a nuclear fuel, to produce radioisotopes for research, in radionuclide batteries for pacemakers, and as the agent of fission in nuclear weapons.

Growth factors regulate expression of mineral associated genes in cementoblasts. (1/95)

BACKGROUND: Knowledge of the responsiveness of cells within the periodontal region to specific bioactive agents is important for improving regenerative therapies. The aim of this study was to determine the effect of specific growth factors, insulin-like growth factor-I (IGF-I), platelet-derived growth factor-BB (PDGF-BB), and transforming growth factor-beta (TGF-beta) on cementoblasts in vitro and ex vivo. METHODS: Osteocalcin (OC) promoter driven SV40 transgenic mice were used to obtain immortalized cementoblasts. Growth factor effects on DNA synthesis were assayed by [3H]-thymidine incorporation. Northern analysis was used to determine the effects of growth factors on gene expression profile. Effects of growth factors on cementoblast induced biomineralization were determined in vitro (von Kossa stain) and ex vivo (re-implantation of cells in immunodeficient (SCID) mice). RESULTS: All growth factors stimulated DNA synthesis compared to control. Twenty-four hour exposure of cells to PDGF-BB or TGF-beta resulted in a decrease in bone sialoprotein (BSP) and osteocalcin (OCN) mRNAs while PDGF-BB also increased osteopontin (OPN) mRNA. Cells exposed to IGF-I for 24 hours exhibited decreased transcripts for OCN and OPN with an upregulation of BSP mRNA noted at 72 hours. In vitro mineralization was inhibited by continuous application of PDGF-BB or TGF-beta, while cells exposed to these factors prior to implantation into SCID mice still promoted biomineralization. CONCLUSIONS: These data indicate IGF-I, PDGF-BB, and TGF-beta influence mitogenesis, phenotypic gene expression profile, and biomineralization potential of cementoblasts suggesting that such factors alone or in combination with other agents may provide trigger factors required for regenerating periodontal tissues.  (+info)

Application of high resolution microfocus X-ray CT for the observation of human tooth. (2/95)

The calcification degree of extracted human teeth was observed by using high resolution microfocus X-ray CT. As samples, upper and lower first premolars extracted from a 21-year-old female were used. The computed tomograms were produced by high resolution microfocus X-ray CT with a open vacuum X-ray source, rotating sample stage, and image sensor. The distinction between enamel and dentin was very clear, and the shape of the pulp cavity was also clearly identified. The secondary dentin was visible in the circumpulpal dentin. The color map displays showed the heterogeneity of the calcification degree not only in the dentin but also in the enamel. The enamel was divided into three layers according to the calcification degree. High resolution microfocus X-ray CT was very useful for the observation of the internal structure of human teeth without destroying the samples.  (+info)

On the relationship between tetracycline and the incremental lines in dentine. (3/95)

Ground and decalcified sections of human, goat and pig teeth were examined using polarized and ultraviolet fluorescence microscopy, microradiography and electron microscopy. The experimental animals were given doses of tetracycline within the range 3-150 mg/kg. After the low doses there was no evidence of any disturbance of mineralization or of structural organization in either the goat or the pig. After the higher doses, however, the tetracycline lines usually corresponded with a disturbance of structural organization and often with a disturbance of mineralization as well. In the human cases, the tetracycline lines sometimes corresponded with a disturbance of mineralization or of structural organization. However, our evidence suggests that the disturbances in the structure or mineralization of the dentine in the human subjects were not caused by the tetracycline. It was concluded that, provided the dose is kept low (3-31 mg/kg) tetracycline can be used as a reliable non-toxic marker in growth studies and is also used in the study of mineral deposition.  (+info)

On the configuration of incremental lines in human dentine as revealed by tetracycline labelling. (4/95)

The pattern of tetracycline labelling in dentine was investigated in ground sections of human teeth under visible and ultraviolet light. The tetracycline lines presented different appearances near the enamel-junction region, near the dentine-cementum junction, in the mantle dentine, and in the circumpulpal dentine, depending on whether the mineralization front was linear, globular or linear-globular.  (+info)

Proteoglycans in dentinogenesis. (5/95)

The predominant proteoglycans present in predentin and dentin are the chondroitin-sulphate-rich decorin and biglycan and the keratan-sulphate-rich lumican and fibromodulin. These are small, interstitial, leucine-rich proteoglycans which have recently been shown to exist in gradients across the predentin. Antibodies recognizing chondroitin sulphate show a decreasing gradient from the pulpal aspect toward the mineralizing front, the converse being true for keratan sulphate. Antidecorin shows an increase toward the mineralization front. Evidence from biochemical, autoradiographic, and immunohistochemical studies implies that such changes may be brought about by gradients of metalloproteinases. This offers the possibility that the proteoglycans organize the collagen network for receipt of phosphoproteins and phospholipids, the former being evident only at the onset of dentin formation. The suggestion is raised that glycosaminoglycan-depleted leucine-rich protein cores act as sequester points for receipt of phosphoproteins in particular. The rigid, spatially oriented glycosaminoglycan chains on decorin and biglycan are known to bind calcium and may feature directly in mineral initiation.  (+info)

Phospholipids in amelogenesis and dentinogenesis. (6/95)

Phospholipids have been identified in enamel and dentin. Before demineralization, a group of phospholipids extracted by lipid solvents was associated with cell membranes and is therefore closely related to cell growth and intracellular regulations. After demineralization, a second group of phospholipids, associated with the extracellular matrix, was extracted; this group is probably linked to the mineralized phase. Using imidazole-osmium tetroxide fixation of rat incisors, we stained cellular unsaturated fatty acids, so that we could visualize the membrane domains, coated pits, and endocytic inclusions. Filipin, a probe for cholesterol, varied in density along the plasma membrane of secretory ameloblasts, and allowed us to visualize membrane remnants inside the forming enamel. With respect to phospholipids located in the extracellular matrix, the malachite-green-glutaraldehyde (MGA) method or iodoplatinate (IP) reaction retains and visualizes enamel and dentin phospholipids. In predentin, aggregates appearing as granules and filaments, or liposome-like structures, were located in the spaces between collagen fibrils. In dentin, organic envelopes coating the crystals, also named "crystal-ghost" structures, outlined groups of collagen fibrils. Histochemical data provided evidence that phospholipids are co-distributed or interact with proteoglycans. Radioautography after IP reaction established that [3H] choline was detected in dentin as early as 30 min after the intravenous injection of the labeled precursor, before any labeling was seen in odontoblasts and predentin. This suggests that blood-serum-labeled phospholipids pass between odontoblasts, cross the distal permeable junctional complex, and diffuse in dentin prior to any cellular uptake and phospholipid synthesis. Pharmacologically and genetically induced pathology also supports the suggestion that phospholipids play an important role in the formation and mineralization of dental tissues.  (+info)

Dental fluorosis: chemistry and biology. (7/95)

This review aims at discussing the pathogenesis of enamel fluorosis in relation to a putative linkage among ameloblastic activities, secreted enamel matrix proteins and multiple proteases, growing enamel crystals, and fluid composition, including calcium and fluoride ions. Fluoride is the most important caries-preventive agent in dentistry. In the last two decades, increasing fluoride exposure in various forms and vehicles is most likely the explanation for an increase in the prevalence of mild-to-moderate forms of dental fluorosis in many communities, not the least in those in which controlled water fluoridation has been established. The effects of fluoride on enamel formation causing dental fluorosis in man are cumulative, rather than requiring a specific threshold dose, depending on the total fluoride intake from all sources and the duration of fluoride exposure. Enamel mineralization is highly sensitive to free fluoride ions, which uniquely promote the hydrolysis of acidic precursors such as octacalcium phosphate and precipitation of fluoridated apatite crystals. Once fluoride is incorporated into enamel crystals, the ion likely affects the subsequent mineralization process by reducing the solubility of the mineral and thereby modulating the ionic composition in the fluid surrounding the mineral. In the light of evidence obtained in human and animal studies, it is now most likely that enamel hypomineralization in fluorotic teeth is due predominantly to the aberrant effects of excess fluoride on the rates at which matrix proteins break down and/or the rates at which the by-products from this degradation are withdrawn from the maturing enamel. Any interference with enamel matrix removal could yield retarding effects on the accompanying crystal growth through the maturation stages, resulting in different magnitudes of enamel porosity at the time of tooth eruption. Currently, there is no direct proof that fluoride at micromolar levels affects proliferation and differentiation of enamel organ cells. Fluoride does not seem to affect the production and secretion of enamel matrix proteins and proteases within the dose range causing dental fluorosis in man. Most likely, the fluoride uptake interferes, indirectly, with the protease activities by decreasing free Ca(2+) concentration in the mineralizing milieu. The Ca(2+)-mediated regulation of protease activities is consistent with the in situ observations that (a) enzymatic cleavages of the amelogenins take place only at slow rates through the secretory phase with the limited calcium transport and that, (b) under normal amelogenesis, the amelogenin degradation appears to be accelerated during the transitional and early maturation stages with the increased calcium transport. Since the predominant cariostatic effect of fluoride is not due to its uptake by the enamel during tooth development, it is possible to obtain extensive caries reduction without a concomitant risk of dental fluorosis. Further efforts and research are needed to settle the currently uncertain issues, e.g., the incidence, prevalence, and causes of dental or skeletal fluorosis in relation to all sources of fluoride and the appropriate dose levels and timing of fluoride exposure for prevention and control of dental fluorosis and caries.  (+info)

Ca-binding domains in the odontoblast layer of rat molars and incisors under normal and pathological conditions. (8/95)

We recently reported the presence of high concentrations of a Ca-binding matrix in the circumpulpal dentin of rat incisors which had been prevented from mineralization by a systemic administration of 1-hydroxyethylidene-1,1-bisphosphonate (HEBP), a type of bisphosphonates, thus suggesting the role of the putative Ca-binding matrix in the appositional mineralization of circumpulpal dentin (TAKANO et al., 1998, 2000; OHMA et al., 2000). In this study, we examined the distribution of Ca-binding domains in the pulp tissue of normal rat teeth and its changes under the influence of HEBP, in order to identify and clarify the role of the Ca-binding matrix in the physiological process of dentin mineralization. Observation of the normal rat tooth pulp showed occasional, tiny extracellular deposits of Ca-enriched material in the odontoblast layer, associated primarily with pericapillary regions. Such deposits were immunopositive for dentin sialoprotein (DSP), displayed high levels of X-ray peaks for calcium and phosphorus, and showed a drastic increase in amount by daily injections of HEBP. A brief vascular perfusion of high Ca-containing solution in normal animals caused the extensive deposition of Ca-P complexes along the basolateral membranes of odontoblasts but not in the other regions of the pulp tissue. These data suggest the existence of DSP-enriched extracellular Ca-binding domains in the odontoblast layer and also indicate a novel Ca-binding property of the basolateral membranes of odontoblasts. Since DSP is primarily synthesized as dentin sialophosphoprotein (DSPP) and later cleaved into dentin phosphophoryn (DPP) and DSP in odontoblasts, and since DSP has no notable affinity for Ca, the sites of DSP-immunopositive Ca-P deposits in the odontoblast layer may also contain DPP, a highly phosphorylated acidic protein having a strong binding property for calcium. Characteristic Ca-binding properties seen in the odontoblast layer appear to be related to the regulation of the appositional mineralization of circumpulpal dentin.  (+info)

Molar Incisor Hypomineralization or MIH is a developmental condition seen in children presenting as enamel defects in the permanent incisors and the first
Modified glass ionomer and orthodontic band: An interim alternative for the treatment of molar incisor hypomineralization. A case report.
Enamel is the hardest tissue with the highest degree of mineralization protecting the dental pulp from injury in vertebrates. The ameloblasts differentiated from ectoderm-derived epithelial cells are a single cell layer and are important for the enamel formation and mineralization. Wnt/β-catenin signaling has been proven to exert an important role in the mineralization of bone, dentin and cementum. Little was known about the regulatory mechanism of Wnt/β-catenin signaling pathway in ameloblasts during amelogenesis, especially in the mineralization of enamel. To investigate the role of β-catenin in ameloblasts, we established Amelx-Cre; β-catenin∆ex3fl/fl (CA-β-catenin) mice, which could constitutive activate β-catenin in ameloblasts. It showed the delayed mineralization and eventual hypomineralization in the incisor enamel of CA-β-catenin mice. Meanwhile, the amelogenesis-related proteinases Mmp20 and Klk4 were decreased in the incisors of CA-β-catenin mice. These data indicated that ...
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PubMed Central Canada (PMC Canada) provides free access to a stable and permanent online digital archive of full-text, peer-reviewed health and life sciences research publications. It builds on PubMed Central (PMC), the U.S. National Institutes of Health (NIH) free digital archive of biomedical and life sciences journal literature and is a member of the broader PMC International (PMCI) network of e-repositories.
Osteomalacia is the softening of the bones caused by impaired bone metabolism primarily due to inadequate levels of available phosphate, calcium, and vitamin D, or because of resorption of calcium. The impairment of bone metabolism causes inadequate bone mineralization. Osteomalacia in children is known as rickets, and because of this, use of the term osteomalacia is often restricted to the milder, adult form of the disease. Signs and symptoms can include diffuse body pains, muscle weakness, and fragility of the bones. In addition to low systemic levels of circulating mineral ions necessary for bone and tooth mineralization, accumulation of mineralization-inhibiting proteins and peptides (such as osteopontin and ASARM peptides) occurs in the extracellular matrix of bones and teeth, likely contributing locally to cause matrix hypomineralization (osteomalacia).[1][2][3][4][5] The most common cause of osteomalacia is a deficiency of vitamin D, which is normally derived from sunlight exposure and, ...
Objectives: The aim of this research was to determine the prevalence, distribution, and associations of molar incisor hypomineralization (MIH) with perinatal complications (PC), childhood illness (CI), and prolonged antibiotic consumption (PAC) among children attending the Polyclinic, Kulliyyah of Dentistry, IIUM, from February 2013 until December 2013. Materials and methods: A matched-pair case control study on children of 7 to 14 years of age was conducted. MIH was determined based on criteria from EAPD seminar, Athens 2003 (Weerheijm et al., 2003). Inter-examiner reliability was tested with Kappa statistic (0.80). This research was approved by the IIUM Research Ethic Committee (IREC). Results: Out of 201 patients, 25 were detected having MIH. The prevalence of MIH was 12.4% within the 11 month period. Among those 25 patients, 52.0% were boys and 48.0% were girls. Locations of MIH were found in maxilla (57%) and mandible (43%). There was no statistically significant association between MIH and ...
Figure 3: Lingual shelf (MW) and dentin (DA2/DA1) layers in place. The patient had two types of subtle white calcifications occurring on their natural enamel, which needed to be replicated in composite for ultimate esthetic blending of the final restoration. One type is a very soft and diffuse white splotchiness along the line angles and is best created using a bleach-white composite, which can be more easily feathered for the diffuse appearance. In this case, the BL1 composite works well, as it is a highly opaque white but can be feathered nicely. The BL1 composite was initially placed with a composite instrument, and excess composite was removed until a reasonable amount remained (Fig 4). Feathering and diffusing of the BL1 composite were then achieved using the OptraSculpt instrument (Ivoclar Vivadent), which has a small foam pad that makes it easy to wipe away the BL1 composite until the desired effect is achieved. ...
SLC26A Gene Family Participate in pH Regulation during Enamel Maturation. . Biblioteca virtual para leer y descargar libros, documentos, trabajos y tesis universitarias en PDF. Material universiario, documentación y tareas realizadas por universitarios en nuestra biblioteca. Para descargar gratis y para leer online.
ALPL Mouse anti-Human, Clone: BGN/03/66KF44, Abnova™-Mouse monoclonal antibody raised against human ALPL. Shop ALPL Mouse anti-Human, Clone: BGN/03/66KF44, Abnova™
Polyclonal antibody for Alkaline Phosphatase/ALPL detection. Host: Rabbit.Size: 100μg/vial. Tested applications: IHC-P. Reactive species: Human. Alkaline Phosphatase/ALPL information: Molecular Weight: 57305 MW; Subcellular Localization: Cell membrane ; L
Rabbit polyclonal antibody raised against partial recombinant human ALPL. Recombinant protein corresponding to amino acids 198-316 of human ALPL. (PAB30563) - Products - Abnova
The ICCBMT conference series, which has been held every three years or so since , is one of the most important scientific gatherings in the field of biological mineralization. The meeting emphasizes a wealth of physicochemical, biological and clinical topics concerning mineralization processes in vertebrate and invertebrate species.
Published in: Premières Journées JCSEE1 - Chimie, soleil, énergie et environnement, Saint-Avold, France, 3-4 févr. 2000, p. 10 ...
Mylc2b兔多克隆抗体(ab63479)可与人样本反应并经ELISA, IHC实验严格验证。中国75%以上现货,所有产品均提供质保服务,可通过电话、电邮或微信获得本地专属技术支持。
Hypophosphatasia (also called deficiency of alkaline phosphatase or phosphoethanolaminuria) is a rare, and sometimes fatal, metabolic bone disease. Clinical symptoms are heterogeneous, ranging from the rapidly fatal, perinatal variant, with profound skeletal hypomineralization and respiratory compromise, to a milder, progressive osteomalacia later in life. Tissue non-specific alkaline phosphatase (TNSALP) deficiency in osteoblasts and chondrocytes impairs bone mineralization, leading to rickets or osteomalacia. The pathognomonic finding is subnormal serum activity of the TNSALP enzyme, which is caused by one of 200 genetic mutations identified to date, in the gene encoding TNSALP. Genetic inheritance is autosomal recessive for the perinatal and infantile forms but either autosomal recessive or autosomal dominant in the milder forms. The prevalence of hypophosphatasia is not known; one study estimated the live birth incidence of severe forms to be 1:100,000. There is a remarkable variety of ...
Dental fluorosis is characterized by subsurface hypomineralization and retention of enamel matrix proteins. Fluoride (F(-)) exposure generates reactive oxygen species (ROS) that can cause endoplasmic reticulum (ER)-stress. We therefore screened oxidative stress arrays to identify genes regulated by …
Insulin-dependent type-1 diabetes mellitus (DM) and oral diseases are closely interrelated. Poor metabolic control in diabetics is associated with a high risk of gingivitis, periodontitis and tooth loss. Salivary flow declines in diabetics and patients suffer from xerostomia. Reduced saliva predisposes to enamel hypomineralization and caries formation; however, the mechanisms that initiate and lead to progression of tooth decay and periodontitis in type-1 DM have not been explored. To address this issue, we analyzed tooth morphology in Akita-/- mice that harbor a point mutation in the Ins2 insulin gene which leads to insulin deficiency and hyperglycemia. Objective: To characterize the tooth phenotype in Akita-/- mice and determine whether hyperglycemia and hyposalivation contribute to dental defects. Methods: Mandibles from Akita-/- and wild type littermates were analyzed by microCT, scanning EM and histology; teeth were examined for amelogenin and ameloblastin expression. Mice were injected ...
The pulp periphery: At the outer border of the pulp, odontoblasts and the so-called Hoehls cells form continuous layers. These postmitotic cells have the capacity to undergo terminal differentiation. Odontoblasts are implicated in the synthesis of collagen and noncollagenous extracellular matrix components. Some ECM proteins are phosphorylated (SIBLINGs), whereas others are non-phosphorylated. ECM components are implicated in predentin and dentin formation, followed by dentin mineralization. Due to a fixation artifact, the formation of a cell-free layer results in from fixation and dehydration. A cell-free area underlines odontoblasts and Hoehls cells, which do not appear on sections after adequate fixative perfusion. Fenestrated capillary loops infiltrate the layer formed by odontoblasts and Hoehls cells but do not cross the terminal junctions located between the distal odontoblast cell bodies nor penetrate within the predentin. In contrast, axons infiltrate the odontoblastic layer and ...
Hypophosphatasia is a genetic condition in which the activity of an enzyme called alkaline phosphatase is deficient. This enzyme plays an essential role in mineralization - when minerals such as calcium and phosphorus are deposited in developing bones and teeth. Low activity of this enzyme which characterizes hypophosphatasia also leads to rickets, osteomalacia, or both. The severity of the symptoms of hypophosphatasia varies widely, from fetal loss during pregnancy to cases in which pathologic fractures first present only in adulthood. Hypophosphatasia is caused by a mutation in a gene - called the ALPL gene - that provides instructions for making the alkaline phosphatase enzyme. A cure or proven medical therapy for hypophosphatasia has not yet been found. Treatment is generally directed towards preventing or correcting the symptoms or complications ...
TY - JOUR. T1 - A homozygous missense variant in the alkaline phosphatase gene ALPL is associated with a severe form of canine hypophosphatasia. AU - Kyöstilä, Kaisa. AU - Syrjä, Pernilla. AU - Lappalainen, Anu K.. AU - Arumilli, Meharji. AU - Hundi, Sruthi. AU - Karkamo, Veera. AU - Viitmaa, Ranno. AU - Hytönen, Marjo K.. AU - Lohi, Hannes. PY - 2019/1/30. Y1 - 2019/1/30. KW - PYRIDOXINE-RESPONSIVE SEIZURES. KW - INFANTILE HYPOPHOSPHATASIA. KW - MATRIX VESICLES. KW - PERINATAL HYPOPHOSPHATASIA. KW - MUTATION. KW - BONE. KW - VITAMIN-B6. KW - NOSOLOGY. KW - GENOTYPE. KW - PYRIDOXAL-5-PHOSPHATE. KW - 413 Veterinary science. KW - 1184 Genetics, developmental biology, physiology. KW - 3111 Biomedicine. U2 - 10.1038/s41598-018-37801-2. DO - 10.1038/s41598-018-37801-2. M3 - Article. VL - 9. JO - Scientific Reports. JF - Scientific Reports. SN - 2045-2322. M1 - 973. ER - ...
aData from a noninterventional, retrospective chart review study designed to understand the natural history of 48 patients ≤5 years of age with severe perinatal- and infantile-onset hypophosphatasia. Patients included in the study were those diagnosed with hypophosphatasia based on at least one of the following: serum biomarker levels (below-normal alkaline phosphatase [ALP] and above-normal PLP or PEA), below-normal ALP and radiographic abnormalities, or genetic analysis of the ALPL gene. Additionally, onset of hypophosphatasia must have occurred prior to 6 months of age based on signs that included at least one of the following: respiratory compromise, rachitic chest deformity, and/or vitamin B6-responsive seizures.12. bRadiographs are from different patients with hypophosphatasia.. ...
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Hypophosphatasia is a heterogeneous disease and the various forms of the disease can vary a great deal in severity. Mortality is high for the most severe forms in children with symptoms already at the foetal stage and before the age of 6 months. Individuals with the least severe form of hypophosphatasia may not be diagnosed until they reach adulthood ...
It is the consequence of interspecies competition and is occasionally thought of as serial succession. There are three major types of interdependence. It appears to be another illustration of asymmetry.. Not getting sufficient sleep could possibly be linked to stress and guilt. Many packaged foods are irradiated so as to denature bacterial proteins and guarantee that the food can be kept for lengthy amounts of time. There are many types of barometers.. Secondly, dehydration reactions can be categorized on the essence of the catalyst. This kind of mimicry is extremely rare and harder to understand than the previous two different types. This kind of denaturation is very important to transcription and DNA replication.. Polarity in the creation of the embryo could be illustrated by the early maturation of the nematode embryo. Principal succession is a type of ecological succession that refers to succession where there isnt any substrate available. Psoriatic ...
It is the consequence of interspecies competition and is occasionally thought of as serial succession. There are three major types of interdependence. It appears to be another illustration of asymmetry.. Not getting sufficient sleep could possibly be linked to stress and guilt. Many packaged foods are irradiated so as to denature bacterial proteins and guarantee that the food can be kept for lengthy amounts of time. There are many types of barometers.. Secondly, dehydration reactions can be categorized on the essence of the catalyst. This kind of mimicry is extremely rare and harder to understand than the previous two different types. This kind of denaturation is very important to transcription and DNA replication.. Polarity in the creation of the embryo could be illustrated by the early maturation of the nematode embryo. Principal succession is a type of ecological succession that refers to succession where there isnt any substrate available. Psoriatic ...
Baby marmosets that were introduced to solid food at a young age are more likely to become obese, and to eat larger quantities of food if given the chance, according to a new study. This early-life obesity resulted in a host of metabolic changes, including insulin resistance, a hallmark of type 2 diabetes. With its small size and early maturation, we think the marmoset is going to be an exceptionally good model of early life obesity and offers many opportunities to further explore why youngsters become obese, said Suzette D. Tardif, associate professor of cellular and structural biology at the University of Texas-San Antonio School of Medicine. Tardifs team had noticed obesity patterns began at a young age in these small monkeys, and wanted to test whether marmosets could become overweight by simply eating more. Tardif found that patterns leading to obesity begin very early in young marmosets, around 30 days of age. A month-old marmoset is equivalent to a 5- to 8-month-old human. The ...
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Background. The goal of treating exposed pulp with an appropriate pulp capping material is to promote the dentinogenic potential of the pulpal cells. There have been recent attempts to develop more effective pulp-capping materials. Objectives. The aim of this study was to evaluate the effect of newly developed calcium silicate-based material on odontogenic differentiation of primary human dental pulp cells (HDPCs), in comparison with a contemporary calcium silicate-based material. Material and methods. Human dental pulp cells isolated from dental pulps were cultured in standard culture conditions in Dulbeccos Modified Eagles Medium (DMEM) and then the effects of Micro-Mega mineral trioxide aggregate (MM-MTA) (Micro-Mega, Besancon, France) and ProRoot MTA (MTA) (Dentsply Sirona, Tulsa, USA) (positive control) were evaluated on HDPCs at 1, 7 and 14 days. Untreated cells were used as a negative control. Odontoblastic differentiation was assessed by alkaline phosphatase (ALP) activity. Runtrelated ...
This study aimed to characterize fluoride-induced alterations in dentin mineralization within a dentin-pulp organ culture system. Tooth sections derived from male Wistar rat incisors were cultured in Trowel-type culture for 14 days, in the presence of 0 mM, 1 mM, 3 mM and 6 mM sodium fluoride. Tooth sections were processed and analyzed for uptake of fluoride, its subsequent effect on dentin mineralization by tetracycline hydrochloride incorporation and mineral composition, expressed as calcium/phosphorous (Ca/P) ratios. Tetracycline hydrochloride incorporation was demonstrated to decrease with increased fluoride exposure, accompanied by significant increases in both Ca/P ratios and fluoride incorporation. These findings provide further evidence that the established alterations in dentin formation during fluorosis are a consequence of disruption to the mineralization process, and provide a model system with which to investigate further the potential role the extracellular matrix plays in inducing ...
Damage or exposure of the dental pulp requires immediate therapeutic intervention. This study assessed the biocompatibility of a silver-containing PLGA/TCP-nanofabric scaffold (PLGA/Ag-TCP) in two in vitro models, i.e. the material adapted on pre-cultured cells and cells directly cultured on the material, respectively. Collagen saffolds with and without hyaluronan acid (Coll-HA; Coll) using both cell culturing methods and cells growing on culture plates served as reference. Cell viability and proliferation were assessed after 24, 48, and 72 h based on formazan formation and BrdU incorporation. Scaffolds were harvested. Gene expression of interleukin(IL)-6, tumor necrosis factor (TNF)-alpha, and alkaline phosphatase (AP) was assessed 24 h after stimulation. In both models formazan formation and BrdU incorporation was reduced by PLGA/Ag-TCP on dental pulp cells, while no significant reduction was found in cells with Coll and Coll-HA. Cells with PLGA/Ag-TCP for 72 h showed similar relative BrdU
The hereditary dentine disorders, dentinogenesis imperfecta (DGI) and dentine dysplasia (DD), comprise a group of autosomal dominant genetic conditions characterised by abnormal dentine structure affecting either the primary or both the primary and secondary dentitions. DGI is reported to have an incidence of 1 in 6,000 to 1 in 8,000, whereas that of DD type 1 is 1 in 100,000. Clinically, the teeth are discoloured and show structural defects such as bulbous crowns and small pulp chambers radiographically. The underlying defect of mineralisation often results in shearing of the overlying enamel leaving exposed weakened dentine which is prone to wear. Currently, three sub-types of DGI and two sub-types of DD are recognised but this categorisation may change when other causative mutations are found. DGI type I is inherited with osteogenesis imperfecta and recent genetic studies have shown that mutations in the genes encoding collagen type 1, COL1A1 and COL1A2, underlie this condition. All other forms of
Enamel demineralization is frequently encountered in dental practice. Histologically, hypomineralization is the common feature and several etiologies stand behind their clinical appearance. Recently, resin infiltration technique was introduced to mask these enamel lesions.
Research and study of fluoride ingestion by children relating to the causes and risks of enamel fluorosis. Read our research and article summaries.
Cell viability rate (%) according to NR assay in human dental pulp cells (hDPCs) exposed to MTA Plus (MTAP), MTA Fillapex (MTAF), FillCanal (FC) and culture med
Introduction: Mutations in the gene ALPL in hypophosphatasia (HPP) reduce the function of tissue nonspecific alkaline phosphatase, and the resulting increase in pyrophosphate (PPi) contributes to bone and tooth mineralization defects by inhibiting physiologic calcium-phosphate (P-i) precipitation. Although periodontal phenotypes are well documented, pulp/dentin abnormalities have been suggested in the clinical literature although reports are variable and underlying mechanisms remains unclear. in vitro analyses were used to identify mechanisms involved in HPP-associated pulp/dentin phenotypes. Methods: Primary pulp cells cultured from HPP subjects were established to assay alkaline phosphatase (ALP) activity, mineralization, and gene expression compared with cells from healthy controls. Exogenous P-i was provided to the correct P-i/PPi ratio in cell culture. Results: HPP cells exhibited significantly reduced ALP activity (by 50%) and mineral nodule formation (by 60%) compared with the controls. ...
Principal Investigator:NAGASAKA Nobuo, Project Period (FY):1996 - 1997, Research Category:Grant-in-Aid for Scientific Research (B), Section:一般, Research Field:矯正・小児・社会系歯学
Bone tissue is an organic-inorganic composite material that provides mechanical support and protection for our bodies. Its impressive...
Expression of ALPL (HOPS, TNSALP) in pancreas tissue. Antibody staining with HPA007105, HPA008765 and CAB020829 in immunohistochemistry.
Embedding nano size CoFe2O4 ferrite particles in a hydroxyapatite (HAP) host would make them to better candidates for hyperthermia treatment of cancer. The formation of nano crystallites of CoFe2O4 ferrites in the hydroxyapatite Ca10-3xFe2xCox(PO4)6(OH)2 (where x= 0, 0.1, 0.2, 0.3, 0.4 and 0.5 %mole) mixtures heated to temperatures between 500 and 1250°C for 2 hrs.
i6006886, also known as c.299C,T or p.T100M, is a SNP in the ALPL gene on chromosome 1. Based on the ALPL gene mutations database, the rare/minor allele is considered pathogenic for the infantile form of hypophosphatasia. ...
Theres chronological age and performance age and both may not be the same. So what is age? Some maintain age is a physical state, others believe it has
Pathological stimuli, such as bacterial activity, dental bleaching, and nonpolymerized resin monomers, can cause death of dental pulp cells (DPCs) through oxidative stress- (OS-) induced mitochondrial dysfunction. However, the crucial molecular mechanisms that mediate such a phenomenon remain largely unknown. OS is characterized by the overproduction of reactive oxygen species (ROS), e.g., H|sub|2|/sub|O|sub|2|/sub|, O|sub|2|/sub||sup|−|/sup|, and |sup|⋅|/sup|OH. Mitochondria are a major source of ROS and the principal attack target of ROS. Cyclophilin D (CypD), as the only crucial protein for mitochondrial permeability transition pore (mPTP) induction, facilitates the opening of mPTP and causes mitochondrial dysfunction, leading to cell death. In the present study, we hypothesized that CypD-mediated mitochondrial molecular pathways were closely involved in the process of OS-induced death of human DPCs (HDPCs). We tested the phenotypic and molecular changes of HDPCs in a well-established
Maintaining or regenerating a vital pulp is a preferable goal in current endodontic research. In this study, human dental pulp cell aggregates (spheres) were applied onto bovine and human root canal models to evaluate their potential use as pre-differentiated tissue units for dental pulp tissue regeneration. Human dental pulp cells (DPC) were derived from wisdom teeth, cultivated into three-dimensional cell spheres and seeded onto bovine and into human root canals. Sphere formation, tissue-like and mineralization properties as well as growth behavior of cells on dentin structure were evaluated by light microscopy (LM), confocal laser scanning microscopy (CLSM), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). Spheres and outgrown cells showed tissue-like properties, the ability to merge with other cell spheres and extra cellular matrix formation; CLSM investigation revealed a dense network of actin and focal adhesion contacts (FAC) inside the spheres and a pronounced
Serum calcium levels are tightly controlled by an integrated hormone-controlled system that involves active vitamin D [1,25(OH)2D], which can elicit calcium mobilization from bone when intestinal calcium absorption is decreased. The skeletal adaptations, however, are still poorly characterized. To gain insight into these issues, we analyzed the consequences of specific vitamin D receptor (Vdr) inactivation in the intestine and in mature osteoblasts on calcium and bone homeostasis. We report here that decreased intestinal calcium absorption in intestine-specific Vdr knockout mice resulted in severely reduced skeletal calcium levels so as to ensure normal levels of calcium in the serum. Furthermore, increased 1,25(OH)2D levels not only stimulated bone turnover, leading to osteopenia, but also suppressed bone matrix mineralization. This resulted in extensive hyperosteoidosis, also surrounding the osteocytes, and hypomineralization of the entire bone cortex, which may have contributed to the ...
Enamel fluorosis is a defect in enamel development that occurs after exposure to excess fluoride. Fluorotic enamel is more porous, and contains more proteins th...
The aim of this study was to examine whether brownish crown and root discoloration of wisdom teeth was related to treatment of acne with tetracyclines. For this purpose, 17 discolored third molars from nine patients were embedded without being decalcified, ground along the tooth axis, and examined using fluorescence microscopy. A thorough medical history served to determine the start and duration of any administration of tetracyclines. This confirmed the use of drugs against acne containing minocycline in all cases except one. The microscopic analyses of all teeth revealed intensely fluorescent bands in the dentin, which corresponded to the mineralization front at the time of tetracycline intake. More or less uniform discoloration of the entire crown was seen in association with treatment against acne prior to the completion of crown formation at the age of about 15 years. This uniform staining can be attributed to incorporation of minerals during ongoing maturation of the occlusal enamel, which ...
Hypophosphatasia is a rare inherited metabolic disease of decreased tissue nonspecific alkaline phosphatase (TNSALP) and defective bone mineralization. Both autosomal recessive and autosomal dominant variants of the disease exist. The disease comes in one of five forms, perinatal, infantile, childhood, adult, and odontohypophosphatasia. Perinatal hypophosphatasia is invariably lethal while infantile hypophosphatasia has a roughly 50% mortality rate with symptoms appearing within the first 6th months after birth. The other forms are generally non-lethal. Common symptoms include bone malformations and higher chance of bone fracture. Both the adult form and odontohypophosphatasial form are marked by premature teeth loss. There is no known cure for hypophosphatasia. However, there have been some claims that choline may have positive health benefits for those with the disease that take it as a dietary supplement. ...
The dentin-enamel junction (DEJ), which is the interface between the dentin and outer enamel coating in teeth, is known for its unique biomechanical properties that provide a crack-arrest barrier for flaws formed in the brittle enamel. In this work, we re-examine how cracks propagate in the proximity of the DEJ, and specifically quantify, using interfacial fracture mechanics, the fracture toughness of the DEJ region. Additionally, we show that the vital function of the DEJ, in preventing cracks formed in enamel from traversing the interface and causing catastrophic tooth fractures, is not necessarily associated with the crack-arrest capabilities of the DEJ itself, but rather with the development of crack-tip shielding, primarily from uncracked-ligament bridging, in the mantle dentin adjacent to the DEJ. Measurements of the toughness of the DEJ region give estimates of Gc ~; 115 J/m2, i.e., ~;5 to 10 times higher than enamel and ~;75 percent of that of dentin. ...
Looking for arterial mineralization? Find out information about arterial mineralization. 1. of, relating to, or affecting an artery or arteries 2. denoting or relating to the usually bright red reoxygenated blood returning from the lungs or... Explanation of arterial mineralization
A research group led by Professor Hannes Lohi at the University of Helsinki and Folkhälsan Research Center has uncovered a new skeletal disease in dogs. The disease was recognized in the Karelian Bear Dog breed and associated with an autosomal recessive defect in the alkaline phosphatase gene, ALPL.
高い抗原親和性、特異性と安定した品質を兼ね備えたアブカムのウサギ・モノクローナル抗体 RabMAb® ab68166 交差種: Ms,Rat,Hu 適用: WB,ICC/IF
All the primary teeth are forming at birth. The first permanent molar is just beginning calcification at or near birth. Cate, A ... It belongs to a series of a growth lines in tooth enamel known as the Striae of Retzius. The neonatal line is darker and larger ... Therefore, only teeth that are developing at birth can exhibit neonatal lines. ... band of incremental growth lines seen in histologic sections of both enamel and dentine of primary and permanent teeth. It is ...
The adjacent teeth are usually not affected.[citation needed] Peripheral ossifying fibromas appear microscopically as a ... The mineralized portion may be bone, cementum-like, or dystrophic calcifications. Additionally, highly developed bone or ... If there are any adjacent teeth, they are cleaned thoroughly to remove any possible source of irritation. Surgical methods can ... or a dystrophic calcification. The lesion is considered part of an ossifying fibroma, but that is usually considered to be a ...
Calcification normally proceeds downward to the base of the tooth, but calcification from the tip stops abruptly in pedicellate ... Calcification resumes at the base, leaving an area in the center of the tooth uncalcified. This pattern is seen in living ... Temnospondyls often have teeth on their palates, as well as in their jaws. Some of these teeth are so large, they are referred ... Mastodonsaurus means "breast tooth lizard" after the nipple-like shape of the tip of the tooth. The naming of these first ...
2008). "Mutational spectrum of FAM83H: the C-terminal portion is required for tooth enamel calcification". Hum. Mutat. 29 (8): ... FAM83H is targeted for the nucleus and it predicted to play a role in the structural development and calcification of tooth ... 2010). "Ultrastructural analyses of deciduous teeth affected by hypocalcified amelogenesis imperfecta from a family with a ...
When Paget's disease affects the facial bones, the teeth may become loose. Disturbance in chewing may occur. Chronic dental ... Angioid streaks may develop, possibly as a result of calcification of collagen or other pathological deposition. Paget's ...
... of Australians over the age of 65 had no natural teeth. In 1989, 44% had no teeth and it is expected by 2019, this figure will ... Calcification of the pulp with the root canals narrowing increases in frequency with the geriatric population too. This can ... thereby leading to people retaining more of their own natural teeth. As they get older, the retained teeth are at risk of ... Cementum on the tooth roots is continually produced; however with age the rate this happens slows down, leaving the geriatric ...
Cementoma It is a lytic lesion that is most often seen with amorphous calcification. Teratoma, a type of tumor in which tooth ... The dentigerous cyst commonly involves a single tooth and rarely affects multiple teeth. The most frequently involved tooth is ... Any permanent tooth can be involved. Regezi and Sciubba stated that the impacted teeth were most commonly seen in the third ... The involved teeth may be displaced into ectopic positions. In the maxilla, these teeth are often displaced into the maxillary ...
Impacted or displaced teeth are often found due to COC. The diameter of the cyst ranges from 2 to 4 cm and swelling pain may be ... Calcification of the sheets may occur. It first appears as fine basophilic granules that increase in size and number forming ... Irregular calcifications may be seen in some cases. They are often located in a periapical or lateral periodontal relationship ... Symptoms include swelling in the mouth, both inside the bone, in the tooth bearing areas, and outside the bone, in the gingiva ...
... hypodontia and impaired tooth calcification; intracranial calcifications, which is the calcification of the brain parenchyma; ...
Chronic over-absorption can cause hardening of bones, calcification of ligaments, and buildup on teeth. Fluoride can cause ... The fluoride enhances the strength of teeth by the formation of fluorapatite, a naturally occurring component of tooth enamel. ... which can alter the appearance of children's teeth during tooth development; this is mostly mild and is unlikely to represent ... A chronic fluoride ingestion of 1 ppm of fluoride in drinking water can cause mottling of the teeth (fluorosis) and an exposure ...
... sclerosis/transparent dentin-sclerosis of primary dentin is regressive alteration in tooth characterized by calcification of ... Dentin is derived from the dental papilla of the tooth germ. The tooth germ is the primordial structures from which a tooth is ... The outermost layer, known as the mantle dentin layer, is found in the crown of the tooth. It can and can be identified by the ... tooth bud. 2012. Medical Dictionary for the Health Professions and Nursing. Farlex. Ross, Michael H., Gordon I. Kaye, and ...
Both species have small, square-shaped teeth on the lower jaw, but M. birostris also has enlarged teeth on the upper jaw. ... Their cartilaginous skeletons do not preserve well, as they lack the calcification of the bony fish. Only three sedimentary ... The male continues to grip the female's pectoral fin with his teeth for a further few minutes as both continue to swim, often ... While some small teeth have been found, few fossilized skeletons of manta rays have been discovered. ...
For example, enamel hypoplasia in the form of white or brown discoloration of primary teeth is commonly seen in young children ... Besides that, pulpal narrowing and calcifications is a frequent finding in patients with renal disease. For patients who are on ... tissue calcification, or a toxic effect of hormone imbalance (e.g. parathyroid hormone) and; the toxic effects of dialysis ... dialysis, the nausea and vomiting resulting from dialysis treatment may lead to severe tooth erosion. When treating patients ...
As a result of defects in the development of the dental cementum, the deciduous teeth (baby teeth) are often lost before the ... Typically, radiographs show defects in calcification and characteristic bony defects near the ends of major long bones. Growth ... Adult hypophosphatasia can be associated with rickets, premature loss of deciduous teeth, or early loss of adult dentation ... Dental problems: Children particularly benefit from skilled dental care, as early tooth loss can cause malnutrition and inhibit ...
... timing and extent of calcification, not tissue complexity, determines tooth attachment mode in reptiles". Journal of Anatomy. ... A study on the presence of ligamentous tooth attachment in mosasaurs and in fossil and modern snakes is published by LeBlanc, ... 2017). A study on the morphology of the occlusal surface of placodont teeth and its implications for the diet of the placodonts ... 2017). A study on the tooth formation cycle in elasmosaurid plesiosaurs is published by Kear et al. (2017). A redescription of ...
Because their teeth grow constantly (as do their nails, like humans), they routinely gnaw on things, lest their teeth become ... Poor diets for guinea pigs have been associated with muscular dystrophy, metastatic calcification, difficulties with pregnancy ... listen (help·info) A chattering sound is made by rapidly gnashing the teeth, and is generally a sign of warning. Guinea pigs ... vitamin deficiencies, and teeth problems. Guinea pigs tend to be fickle eaters when it comes to fresh fruits and vegetables ...
... timing and extent of calcification, not tissue complexity, determines tooth attachment mode in reptiles". Journal of Anatomy. ... Teeth near the tip of the jaw were pointed, teeth near the rear were roughly rectangular and triangular teeth could be found ... Both the remains of mother and young were accompanied more than two thousand of teeth shed by shark of the genus Squalicorax. ... A study on the presence of ligamentous tooth attachment in mosasaurs and in fossil and modern snakes is published by LeBlanc, ...
Occasionally calcification occurs in or around these papillae, as it does regularly in the egg tooth of the embryos of all ... In 1875 Marsh divided this "subclass" into Odontolcae, with the teeth standing in grooves, and Odontotormae, with the teeth in ... Odontornithes is an obsolete and disused taxonomic term proposed by Othniel Charles Marsh for birds possessing teeth, notably ... "teeth" of the bill of anserine birds. In fact the papillae observed in the embryonic birds are the soft cutaneous extensions ...
... may cause a yellow or green discoloration of teeth due to bilirubin deposition during the process of tooth calcification. While ... A much less common sign of jaundice specifically during childhood is yellowish or greenish teeth. In developing children, ... this may occur in children with hyperbilirubinemia, tooth discoloration due to hyperbilirubinemia is not observed in ...
... a number is used in conjunction with a symbol designating in which quadrant the tooth is found. For this tooth, the left and ... The mandibular canines begin to show calcification at age 4 months and the enamel of the crown is completely formed by age 7 ... The canine teeth are able to withstand the tremendous lateral pressures from chewing. There is a single cusp on canines, and ... The mandibular and maxillary canines are the longest teeth in the mouth. The root of the mandibular canine, which is fully ...
... pulp calcification, pulp necrosis, periapical lesions and tooth developmental anomalies. In those with poor immune function, ... sometimes the gums of the upper teeth) or the lower jaw (tongue or gums of the lower teeth) respectively. Oral involvement may ... Therefore, oral involvement rarely causes complications, such as osteonecrosis, tooth loss, periodontitis (gum disease), ...
1-. 'The structure of human teeth', British Dental Journal, Vol. 48 (1927), pp. 737-. The structure of human teeth in relation ... 354-. (with E. M. Killick) 'A preliminary study of factors influencing calcification processes in the rabbit', Biochemical ... Diet and the teeth : an experimental study. Part 2, A. Diet and dental disease. B. Diet and dental structure in mammals other ... She recommended a diet high in Vitamin D and low in cereals to help teeth protect themselves against decay. May Tweedy was born ...
The teeth are less pigmented and are whiter in appearance than the permanent teeth. Compared to the maxillary central incisor, ... The upper lateral incisor is made of 4 lobes of calcification (3 labial will give rise to mamelons and 1 lingual give rise to ... The teeth have a more curved distoincisal angle than the primary maxillary central incisor. The tooth is longer ... a number is used in conjunction with a symbol designating in which quadrant the tooth is found. For this tooth, the left and ...
... this disorder can afflict any number of teeth of both dentitions. The teeth have a higher risk for dental cavities and are ... Enamel defect due to malfunction of enamel calcification, therefore enamel is of normal thickness but is extremely brittle, ... Loss of nerves in the affected teeth may occur. Epidemiology[edit]. The exact incidence of amelogenesis imperfecta is uncertain ... Teeth are prone to staining and rapid wear, exposing dentine. Condition is of autosomal dominant and autosomal recessive ...
In regards to identifying sex, the sex of subadults can be measured by comparing the stage of calcification in the teeth with ... Postcranial skeletons mature slower in boys than girls, whereas the rate of calcification in teeth is about the same for both ... With subadults, the development of teeth, length of long bones, and union of epiphyses are used to estimate age. With adults, ...
Anterior teeth are straight and near-symmetrical, while lateroposterior teeth are slanted. The side of the tooth facing the ... allowing calcification to become more prevalent. When calcified, soft tissue hardens, making it more prone to fossilization. ... The anterior teeth of C. vraconensis measure 2.1-3.5 centimeters (0.8-1.4 in) in height, while the largest known tooth of C. ... The teeth also included lateral cusplets (small enameled cusps that appear at the base of the tooth's main crown), which are ...
... these lines can be seen on the labial surface or lip side of anterior or front teeth as horizontal lines on the tooth crown, ... Produced during the second stage of enamel calcification, also known as the maturation stage, ameloblasts produce matrix and ... In the longitudinal section of a tooth. these lines appear near the dentin. They bend obliquely near the cervical region. They ... The striae of Retzius are incremental growth lines or bands seen in tooth enamel. They represent the incremental pattern of ...
Nylen was known for her research on the morphology of tooth enamel and her contributions to refining the electron microscope as ... Nylen Gets Award For Calcification Studies" (PDF). NIH Record. 1970-03-31. Retrieved 2020-12-27. This article incorporates text ... Nylen's dental studies have added to scientific knowledge in areas such as the ultrastructural morphology of teeth and bones, ... and the calcification of tissue. Her findings of the effects of tetracycline on dental enamel of experimental animals ...
This means that too much calcium within the cells can lead to hardening (calcification) of certain intracellular structures, ... two compounds that the body uses to make teeth and bones. ...
... infarcts and leukoencephalopathy Cerebral calcification cerebellar hypoplasia Cerebral calcifications opalescent teeth ... Tooth disease type 1C Charcot-Marie-Tooth disease type 2A Charcot-Marie-Tooth disease type 2B1 Charcot-Marie-Tooth disease type ... Charcot-Marie-Tooth disease type 2C Charcot-Marie-Tooth disease type 2D Charcot-Marie-Tooth disease type 4A Charcot-Marie-Tooth ... recessive Charcot-Marie-Tooth disease, X-linked type 3, recessive Charcot-Marie-Tooth disease Charcot-Marie-Tooth peroneal ...
A computed tomography (CT) scan is also a good diagnostic tool, as it detects calcification in the tumor. Two distinct types ... They arise from the cells along the pituitary stalk, specifically from nests of odontogenic (tooth-forming) epithelium within ... In the adamantinomatous type, calcifications are visible on neuroimaging and are helpful in diagnosis. The papillary type ... calcifications, and "wet" keratin, HPS stain Micrograph showing a papillary craniopharyngioma, HPS stain Craniopharyngiomas are ...
... discrete calcifications found in the pulp chamber of the tooth which may undergo changes to become diffuse pulp calcifications ... healed tooth fractures, tooth injury restorations and periodontal diseases orthodontic tooth movements transplantation of teeth ... Clinically, a tooth with a pulp stone has normal appearance like any other tooth. The number of pulp stones in a single tooth ... Generally, pulp stones are more frequent to be found in maxillary teeth compared to mandibular teeth. A study in Australia ...
Sognnæs also put his name on scientific publications, primarily on research on tooth enamel and fluoride. Later he published ... Calcification in Biological Systems (1960) Chemistry and prevention of dental caries (1962) Mechanisms of Hard Tissue ... Sognnaes also disproved the theory that President George Washington had wooden teeth. When the original dentures were stolen ... Destruction (1963) America's most famous teeth (1974) Dental evidence in the postmortem identification of Adolf Hitler, Eva ...
... which has numerous rows of 17 teeth each. The teeth are coated with magnetite, a hard ferric/ferrous oxide mineral. The radula ... origin of polyplacophora has that they formed when an aberrant monoplacophoran was born with multiple centres of calcification ... The radular teeth of chitons are made of magnetite, and the iron crystals within these may be involved in magnetoception, the ... although a different mineralization process operates in the spicules to that in the teeth or shells (implying an independent ...
... tooth loss MeSH C07.465.714.836 - tooth migration MeSH C07.465.714.836.535 - mesial movement of teeth MeSH C07.465.714.898 - ... dental pulp calcification MeSH C07.793.237.283 - dental pulp exposure MeSH C07.793.237.315 - dental pulp necrosis MeSH C07.793. ... tooth avulsion MeSH C07.793.850.750 - tooth fractures MeSH C07.793.850.750.300 - cracked tooth syndrome MeSH C07.793.901.653 - ... fused teeth MeSH C07.650.800.600 - odontodysplasia MeSH C07.650.800.850 - tooth, supernumerary MeSH C07.793.099.500 - sleep ...
Other symptoms may include voice alteration, cough, dizziness, migraines, occipital neuralgia, pain in teeth and jaw and ... small percentage of the population will suffer from an elongation of the styloid process and stylohyoid ligament calcification ...
The occurrence of file separation depends on the narrowness, curvature, length, calcification and number of roots on the tooth ... The tooth can also be unroofed to allow drainage and help relieve pressure.[citation needed] A root treated tooth may be eased ... If the tooth is not perfectly sealed, the canal may leak, causing eventual failure. A tooth with a root canal treatment still ... Sometimes a tooth root may be perforated while the root canal is being treated, making it difficult to fill the tooth. The ...
Charcot-Marie-Tooth disease with palmoplantar keratoderma and nail dystrophy) Palmoplantar keratoderma of Sybert (Greither ... solitary congenital nodular calcification, Winer's nodular calcinosis) Transient erythroporphyria of infancy (purpuric ... syndrome Supernumerary nipples-uropathies-Becker's nevus syndrome Terminal osseous dysplasia with pigmentary defects Tooth and ... malformation Dermoid cyst Diffuse neonatal hemangiomatosis Encephalocele Focal facial dermal dysplasia Hutchinson's teeth ...
KARS Charcot-Marie-Tooth disease type 1A; 118220; PMP22 Charcot-Marie-Tooth disease type 1B; 118200; MPZ Charcot-Marie-Tooth ... PKP2 Arterial calcification, generalized, of infancy; 208000; ENPP1 Arterial tortuosity syndrome; 208050; SLC2A10 ... EGR2 Charcot-Marie-Tooth disease type 1E; 118300; PMP22 Charcot-Marie-Tooth disease type 1F; 607734; NEFL Charcot-Marie-Tooth ... MFN2 Charcot-Marie-Tooth disease type 2B; 600882; RAB7 Charcot-Marie-Tooth disease type 2B1; 605588; LMNA Charcot-Marie-Tooth ...
The mastodon was large enough to avoid predation, had large enough teeth to consume an abrasive diet, and had other phenotypes ... This extra energy that will eventually be expended on calcification is currently vital to corals, as they use it to recover ... This will lead to an increase in energy needed for calcification. ...
This extra length is particularly useful for posterior teeth where access and visibility is impaired. ISO files are made of ... This allows the dentist to feel changes in resistance or angulation, which can help determine curvature, calcification and/or ...
Calcification due to degenerative changes in the epithelial cell rests of Malassez Calcification of thrombosed (blocked) ... spherical or ovoid calcified mass embedded within or attached to the cementum layer on the root surface of a tooth, or lying ... Cementicles are the result of dystrophic calcification, but the reason why this takes place is unclear. Cementicles are thought ... to form when calcification occurs around a nidus, a precipitating center. Around this nidus they slowly enlarge by further ...
The upper jaw is formed from the pterygoid bones and vomers alone, all of which bear teeth. Much of the skull is formed from ... The lower tube surrounds the notochord and has a complex structure, often including multiple layers of calcification. Lampreys ... Placoid scales, also called dermal denticles, are similar to teeth in that they are made of dentin covered by enamel. They are ... The scales originate from the mesoderm (skin), and may be similar in structure to teeth. Some species are covered instead by ...
... matrix of dental plaque and calcified tissues undergo a series of chemical and morphological changes that lead to calcification ... Tooth whitening or tooth bleaching is the process of lightening the color of human teeth. Whitening is often desirable when ... "Teeth Whitening". WebMD. Retrieved 2020-03-03. Greenwall, Linda (2017-04-11), "Tooth Sensitivity Associated with Tooth ... tooth whitening can occur within three days and lighten teeth by one or two shades. This type of tooth whitening is available ...
... ectopic calcification - such as for example, in urolithiasis and vascular calcification ‒ presumably at least in part to ... Fisher LW, Fedarko NS (2003). "Six genes expressed in bones and teeth encode the current members of the SIBLING family of ... Such binding of OPN to various types of calcium-based biominerals ‒ such as calcium-phosphate mineral in bones and teeth, ... Along with its role in the regulation of normal mineralization within the extracellular matrices of bones and teeth, OPN is ...
... failed tooth eruption, intrapulpal calcifications, enlarged gingiva, and nephrocalcinosis. GRCh38: Ensembl release 89: ...
Giachelli CM (March 1999). "Ectopic calcification: gathering hard facts about soft tissue mineralization". The American Journal ... Charcot-Marie-Tooth disease, cerebral palsy, congenital diaphragmatic hernia, connective tissue disorders, muscular dystrophy, ...
The pattern of teeth repeats, but each row may not be identical to the last; in the octopus, for instance, the sequence repeats ... "Molluscan shell evolution with review of shell calcification hypothesis". Comparative Biochemistry and Physiology B. 154 (3): ... The teeth may be homodont (i.e. similar in form across a row), heterodont (otherwise), or ctenodont (comb-like). Their height, ... The salivary gland has a small tooth at its end which can be poked into an organism to digest it from within. The digestive ...
Bone and Tooth Society of Great Britain; National Osteoporosis Society; Royal College of Physicians (2003). Glucocorticoid- ... such as soft tissue calcifications, secondary hyperparathyroidism, or osteomalacia in renal osteodystrophy. However, ...
Hydroxyapatite is the main component of tooth enamel. Water fluoridation enhances the resistance of teeth to decay by the ... Too much phosphate can lead to diarrhoea and calcification (hardening) of organs and soft tissue, and can interfere with the ... An average adult human contains about 0.7 kg of phosphorus, about 85-90% in bones and teeth in the form of apatite, and the ...
How to Create Natural-Looking Tooth Calcification Effects Within Direct Composite Resins. September 30, 2019 by AACD Executive ... Once the white calcification effects were completed, a very thin final layer of MW was placed to just beyond the final facial ... Tooth preparation was exceedingly minimal using a medium grit diamond bur (Komet) at a 45-degree angle to lightly bevel the ... Figure 2: Tooth preparation with facio-incisal bevel and air abrasion. The composite used for this restoration was Estelite ...
Number of teeth seen on X-ray at birth is:. 20. 22. 24. 30. 13. At birth the following teeth are calcifying:. Primary incisors ... 3. The last primary tooth to be replaced by a permanent tooth is usually the:. Maxillary second molar Mandibular second molar. ... Which of these teeth are highly sturdy and usually the last ones to be lost ?. Canines. Premolars. First molar. Central ... Calcification of third molar begins at?. 8 months. 18 months. 8 years. 16 years. 17. The deciduous canine emerges?. Before ...
Biochemical analysis of the removed pulp calcification from one of the teeth during endodontic treatment showed large amounts ... Radiographic examination of the dentition revealed pulp calcifications in all permanent teeth, located mostly in the pulp ... A biochemical and histopathological evaluation of generalized pulp calcification in young permanent teeth. ... Pulp calcifications are a frequent finding on bitewing and periapical radiographs in older age-groups but their occurrence in ...
Calcification in molar teeth of rats exposed to cadmium during development. Nutrition Reports International. 1982 Jan 1;25(2): ... Calcification in molar teeth of rats exposed to cadmium during development. / Shearer, T. R.; Britton, J. L. ... Shearer, T. R. ; Britton, J. L. / Calcification in molar teeth of rats exposed to cadmium during development. In: Nutrition ... Shearer, T. R., & Britton, J. L. (1982). Calcification in molar teeth of rats exposed to cadmium during development. Nutrition ...
Tooth cavities. *Vitamin B1 deactivation. Calcification antidotes. *Magnesium. *Vitamin K. *Vitamin D ...
Bone and tooth biology. *Extracellular matrix biology. *Pathologic calcification. Dr. Carolina Beraldo Meloto ...
"Calcification, Physiologic" is a descriptor in the National Library of Medicines controlled vocabulary thesaurus, MeSH ( ... This graph shows the total number of publications written about "Calcification, Physiologic" by people in Harvard Catalyst ... Below are the most recent publications written about "Calcification, Physiologic" by people in Profiles. ... Below are MeSH descriptors whose meaning is more general than "Calcification, Physiologic". ...
They showed in mice that early TNAP expression created a particular environment in teeth with low levels of pyrophosphate, a ... These patterns were confirmed in human teeth, including widespread TNAP, and NPP1 restricted to cementoblasts lining acellular ... The researchers confirmed these patterns in extracted human teeth. ... one of the mineralized substances of teeth. An international team led by Brian Foster from the US National Institute of ...
Pathologic calcification definition at, a free online dictionary with pronunciation, synonyms and translation. ... The calcification of tissues other than bone and teeth.. QUIZZES. QUIZ YOURSELF ON WAS VS. WERE!. Were you ready for a quiz ... As for the calcification of the two valves together, we have seen, under the last variety, how little important a character it ... Words nearby pathologic calcification. pathol., pathological, pathological anatomy, pathological liar, pathologic anatomy, ...
Causes of soft tissue calcificationEdit. Calcification of soft tissue (arteries, cartilage, heart valves,[1][2] etc.) can be ... Calcifications may be classified on whether there is mineral balance or not, and the location of the calcification.[3] ... Dystrophic calcification, without a systemic mineral imbalance.. *Metastatic calcification, a systemic elevation of calcium ... This article is about the calcification of body tissue. For calcification of water pipes, see Hard water. ...
Calcification. XXVI. Caries susceptibility in relation to composition of teeth and diet. ...
... and questions answered by our Genetic and Rare Diseases Information Specialists for Cerebral calcifications opalescent teeth ...
None restorable tooth. *Internal or external root resorption. *Root canal calcification. *Non vital pulps ... Tooth Diseases. Stomatognathic Diseases. Calcium, Dietary. Bone Density Conservation Agents. Physiological Effects of Drugs. ... Vital Pulp Therapy for Management of Irreversible Pulpitis in Human Permanent Teeth: A Randomized Clinical Trial.. ... Carious permanent vital mature molar tooth with closed apex (with preoperative X-ray) ...
European Bone and Tooth Symposium.. Publication info: Berlin,Springer-Verlag [etc.]. Holding Institution: MBLWHOI Library ... Subjects: ACC amorphous calcium carbonate biomineralization Calcification calcium storage cuticle organic matrix ...
Unexplained sensitivity of teeth. *Unusual eruption, spacing or migration of teeth. *Unusual tooth morphology, calcification or ... suspicion of teeth with periapical pathologic conditions, presence of partially erupted teeth, caries lesions, swelling, and ... prior to eruption of the first permanent tooth); child with transitional dentition (after eruption of the first permanent tooth ... evidence suggests that the enamel of permanent teeth undergoes posteruptive maturation and that young permanent teeth are ...
Asked by Collin, Oak Park, Illinois Im in my 40s and was told I have cardiac calcification. ... teeth, it also flushes out existing calcification in soft tissue up to 35 to 40%. I believe that this is clear evidence of the ... However, in the answer above, to the question can calcification be reversed, you make the statement that Calcification cannot ... diet and lifestyle lead to calcification, mineral deficiences lead to calcification, magnesium deficiency specifically as ...
Calcification. *Damaged root surfaces and surrounding bone requiring surgery. Are there any risks and complications associated ... A dye is used to detect any cracks or fractures in the tooth. The apicoectomy is stopped if the tooth is found fractured or ... The tooth is numbed and the gum is cut and lifted to access the root of the tooth. ... Apicoectomy is an endodontic surgery performed to remove the root tip and the surrounding infected tissue of an abscessed tooth ...
What is nutritional calcification? Meaning of nutritional calcification medical term. What does nutritional calcification mean? ... Looking for online definition of nutritional calcification in the Medical Dictionary? nutritional calcification explanation ... Calcification is normal in bones and teeth.. cal·ci·fi·ca·tion. (kalsi-fi-kāshŭn) 1. Deposition of lime or other insoluble ... calcification. (redirected from nutritional calcification). Also found in: Dictionary, Thesaurus, Encyclopedia. calcification. ...
Gum Disease and Tooth Loss Linked to Heart Risks in Older Women. May 10, 2017 ... Coronary Artery Calcification Likely the Best Marker of Heart Health. May 16, 2017 ...
Calcification is a process in which calcium builds up in body tissue, causing the tissue to harden. This can be a normal or ... Ninety-nine percent of calcium entering the body is deposited in bones and teeth. The remaining calcium dissolves in the blood. ... Calcification is a process in which calcium builds up in body tissue, causing the tissue to harden. This can be a normal or ... Calcifications can usually be seen on x-rays. A common example is calcium depositing in the arteries as part of atherosclerosis ...
Day 8: Father tracts appear; parathyroid begins; bone calcification begins.. Day 9: Growth of chorioallantois about 80% ... Day 7: Digits appear; comb growth begins; egg tooth begins; melanin produced; absorption of mineral from shell begins. ... Day 21: Hatching process: chorioallantoic circulation ceases; embryo breaks shell over air cell with egg tooth; embryo slowly ...
Sign: Dead embryos; 3 to 6 days of incubation; yolk sac circulatory system present, embryo on left side, no egg tooth. Causes: ... Day 8: Father tracts appear; parathyroid begins; bone calcification begins.. Day 9: Growth of chorioallantois about 80% ... Sign: Dead embryos; 7 to 17 days of incubation; each embryo has egg tooth, toenails, feather follicles (8 days), feathers (11 ... Day 7: Digits appear; comb growth begins; egg tooth begins; melanin produced; absorption of mineral from shell begins. ...
The white opaque areas in the enamel of the teeth are more extensive but do not involve as much as 50 percent of the tooth. ( ... Thickening of cortical bone and calcification of ligaments and tendons. Severe pain and stiffness in joints and spine. ... paper white areas scattered irregularly over the tooth but not involving as much as 25 percent of the tooth surface. (Dean ... FUNCTIONS • Teeth development • With vitaminD in tretment of osteoporosis • Sodium f;ouride is a powerful inb of glycolytic ...
What percentage of calcium is found in bone and teeth? What percentage of phosphorus is in bone and teeth? ...
Calcification begins 13-16wks iul. Crown complete 1.5mths after birth. Eruption 8-12mths. Root complete 33mths ... 1. Primary Tooth Morphology Flashcards Preview BDS2 CDS Paediatric Dentistry , 1. Primary Tooth Morphology , Flashcards ... Teeth of same series normally erupt within 3mths of contralateral tooth. Usually complete by 2.5/3yrs ... Begins form the time of the first permanent tooth erupts until the exfoliation of the last primary tooth. Usually between 6 and ...
Tooth Calcification / drug effects * Tooth Calcification / genetics Substances * Bicarbonates * Chloride-Bicarbonate ...
Structure of biological apatites.Calcification and reabsorption mechanism. Role of collagen.. Dental biochemistry - Molecular ... mechanisms of tooth enamel formation. Amelogenins. Saliva and its functions. Biochemical basis of caries. ...
The calcification they leave behind is not plaque; it is called calculus.. Arterial plaque forms when cholesterol builds up ... due to resistant teeth or what.. * She said that the plaque on your teeth is the same as the plaque around your heart and ... She said that the plaque on your teeth is the same as the plaque around your heart.... This isnt exactly true: the plaque in ... plaque on your teeth. I think this is also true, plaque is a generic term for a build up of biostuff but it need not all be ...
Radiographic standards for postnatal ossification and tooth calcification. Medical Radiography and Photography, 43, 45-66. ...
... early loss of primary and permanent teeth, and associated calcification of the dura mater [2, 3]. The incidence rate of PLS is ... In three cases, all permanent teeth were exfoliated. In three others, no primary teeth remained. Severe gingivitis was observed ... early loss of primary and permanent teeth, and associated calcification of the dura mater. Herein we described six cases of PLS ... all permanent teeth were exfoliated. In three others, no primary teeth remained. Severe gingivitis was observed in three ...
  • The patient had two types of subtle white calcifications occurring on their natural enamel, which needed to be replicated in composite for ultimate esthetic blending of the final restoration. (
  • 15. Once the enamel formation is complete, the tooth will erupt after approximately? (
  • Microdistribution of calcium and phosphorus in enamel, microhardness of enamel, molar lengths and weights, and in vitro solubilization of enamel was measured in the molar teeth of rats receiving injections of cadmium. (
  • We concluded that caries promotion by cadmium was not caused by a direct effect of the cadmium on the calcification of enamel. (
  • Dental biochemistry - Molecular mechanisms of tooth enamel formation. (
  • Ameloblasts produce tooth enamel, which is the hard, calcium-rich material that forms the protective outer layer of each tooth. (
  • However, researchers do not know how the altered protein leads to teeth with unusually thin, rough, yellowish-brown enamel. (
  • Mutational spectrum of FAM83H: the C-terminal portion is required for tooth enamel calcification. (
  • Underneath the surface enamel and cementum is a substance called dentin , which makes up the main body of the tooth. (
  • The neonatal line is a particular band of incremental growth lines seen in histologic sections of both enamel and dentine of primary and permanent teeth. (
  • It belongs to a series of a growth lines in tooth enamel known as the Striae of Retzius. (
  • The enamel-forming cells, the ameloblasts, are lost upon tooth eruption. (
  • Tooth fusion is defined as union between the dentin and or enamel of two or more separate developing teeth. (
  • Fluorides prevent aortic calcifications and enamel demineralization and inhibit bacterial metabolism but are cardiotoxic. (
  • As the tartar grows on the surface of the teeth, they will begin to decay and cavities will form in the enamel. (
  • Studies have shown that K2 reduces arterial calcification and death due to cardiovascular disease (Rotterdam). (
  • Marulanda M, Gao C, Roman H, Handerson JE, Murshed M. Prevention of arterial calcification corrects the low bone mass phenotype in MGP-deficient mice. (
  • What is the second most frequent site for abdominal arterial calcification? (
  • The calcification of tissues other than bone and teeth. (
  • [4] Such metastatic soft tissue calcification is mainly in tissues containing "calcium catchers" such as elastic fibres or sour mucopolysaccharides. (
  • Metastatic calcification , a systemic elevation of calcium levels in the blood and all tissues. (
  • The primary objective of pulp treatment of an affected tooth is to maintain the integrity and health of oral tissues. (
  • Once vitamin K2 activates these proteins, they help mineralize bones and teeth, protect arteries and other soft tissues from abnormal calcification, and protect against cell death. (
  • The primary objective of pulp therapy is to maintain the integrity and health of the teeth and their supporting tissues. (
  • The physiological mechanisms of mineralization are likely to take place in tissues other than in bones and teeth under specific pathological conditions. (
  • Bones and teeth are the tissues where physiologic mineral depositions take place. (
  • In this work , histopathological and biochemical evaluations of the pulp calcification was done to try and understand the initiation and progress of calcifications in pulpal tissue . (
  • This article is about the calcification of body tissue. (
  • Calcification is the accumulation of calcium salts in a body tissue . (
  • Calcification of soft tissue (arteries, cartilage, heart valves , [1] [2] etc.) can be caused by vitamin K 2 deficiency or by poor calcium absorption due to a high calcium/vitamin D ratio. (
  • Intake of excessive vitamin D can cause vitamin D poisoning and excessive intake of calcium from the intestine, when accompanied by a deficiency of vitamin K (perhaps induced by an anticoagulant ) can result in calcification of arteries and other soft tissue. (
  • Intake of too much vitamin D would be evident by anorexia , loss of appetite, or soft tissue calcification. (
  • Cementum is a mineralized tissue layer covering the tooth root. (
  • dystrophic calcification the deposition of calcium in abnormal tissue, such as scar tissue or atherosclerotic plaques, without abnormalities of blood calcium. (
  • 2. A process in which tissue or noncellular material in the body becomes hardened as the result of precipitates or larger deposits of insoluble salts of calcium (and also magnesium), especially calcium carbonate and phosphate (hydroxyapatite) normally occurring only in the formation of bone and teeth. (
  • 2. Process in which tissue or noncellular material in the body hardens due to precipitates or larger deposits of insoluble salts of calcium, especially calcium carbonate and phosphate normally occurring only in the formation of bone and teeth. (
  • Calcification is a process in which calcium builds up in body tissue, causing the tissue to harden. (
  • Apicoectomy is an endodontic surgery performed to remove the root tip and the surrounding infected tissue of an abscessed tooth, when inflammation or infection persists in the bony area around the end of a tooth after a root canal procedure. (
  • Within the dentin, in a space in the center of the tooth, is the dental pulp , a soft, sensitive tissue that contains nerves and blood and lymph vessels. (
  • When pulp is exposed by mechanical or bacterial means in young permanent teeth,the remaining radicular tissue is judged by clinical and radiographic cirteria where the root closure is not complete. (
  • Root canal calcification, which refers to the deposition of hard tissue on the root canal wall as a result of trauma, caries, periodontal diseases, and aging, contributes to 76.7% of difficult RCT cases [ 7 , 8 ]. (
  • The dental follicle (DF) originates from cranial neural crest cells and is a loose connective tissue sac that plays critical roles in multiple stages of tooth development [ 1 - 3 ]. (
  • Soft Tissue Calcification and Ossification / Laurie C. Carter -- 29. (
  • Excessive exposure to fluoride has been found to cause calcification of cartilage tissue leading to skeletal fluorosis. (
  • Dynamics of Bone Tissue Formation in Tooth Extraction Sites. (
  • 3 Teeth exhibiting signs and/or symptoms such as a history of spontaneous unprovoked toothache, a sinus tract, soft tissue inflammation not resulting from gingivitis or periodontitis, excessive mobility not associated with trauma or exfoliation, furcation/apical radiolucency, or radiographic evidence of internal/external resorption have a clinical diagnosis of irreversible pulpitis or necrosis. (
  • The study excluded teeth with inflammatory resorption, calcification, and more than one root canal. (
  • No resorption of the roots of the teeth or calcification was present in the lesion ( Fig 1A ). (
  • However, no resorption of roots and calcification in the lesion is present. (
  • Calcification, Physiologic" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings) . (
  • This graph shows the total number of publications written about "Calcification, Physiologic" by people in Harvard Catalyst Profiles by year, and whether "Calcification, Physiologic" was a major or minor topic of these publication. (
  • Below are the most recent publications written about "Calcification, Physiologic" by people in Profiles. (
  • the term mineralisation is often used for physiologic calcification. (
  • Pulp calcifications are a frequent finding on bitewing and periapical radiographs in older age-groups but their occurrence in the entire dentition in young subjects is unusual. (
  • Radiographic examination of the dentition revealed pulp calcifications in all permanent teeth , located mostly in the pulp chamber but with some in the root canals . (
  • Calcification stages of the mandibular dentition (canines, first premolars, second premolars, second molars and third molars) were rated according to the system of Demirjian. (
  • The maxillary central incisors followed by maxillary lateral incisors have been reported as the most frequent injured teeth in the primary dentition. (
  • An oral investigation revealed the erupting tooth with regard to normal dentition. (
  • For instance, vascular calcification in arteries of patients with renal failure, diabetes mellitus or atherosclerosis recapitulates the mechanisms of bone formation. (
  • Atherosclerosis, or arteriosclerosis, is calcification of the walls of your arteries and a risk factor for heart disease. (
  • Calcification is normal in bones and teeth. (
  • Ninety-nine percent of calcium entering the body is deposited in bones and teeth. (
  • Vitamin D helps the body absorb the mineral calcium, which maintains strong bones and teeth. (
  • Vitamin K2 works in the liver and directs calcium, much like a roundabout, safely transporting it towards our bones and teeth. (
  • Patterns of calcifications may indicate pathological processes. (
  • Angioid streaks may develop, possibly as a result of calcification of collagen or other pathological deposition. (
  • Mobility of the tooth which is pathological. (
  • Scientists examined the presence of calcifications and the bone level around the teeth. (
  • They are used to confirm the presence of calcifications along the cyst wall that were not detected in the radiographic images. (
  • In a number of breast pathologies , calcium is often deposited at sites of cell death or in association secretions or hyalinized stroma, resulting in pathologic calcification. (
  • Some forms of the cystic type of COC, the epithelial lining proliferates into the lumen (inside space of the cyst) so its filled with masses of ghost cells and dystrophic calcifications. (
  • What causes dystrophic calcifications? (
  • [3] Calcification may also refer to the processes of normal mineral deposition in biological systems, such as the formation of stromatolites or mollusc shells (see Mineralization (biology) or Biomineralization ). (
  • 13 , 14 HPP is associated with premature loss of deciduous and permanent teeth, and a mild clinical form of HPP called odontohypophosphatasia features dental defects without skeletal impairment. (
  • Ultimately, primary or remaining teeth are extracted and are replaced by dental implants. (
  • At present, the main methods to deal with root canal calcification can be summarized as follows: (a) gradual instrumentation and cleaning using a small size of K-files or C+ files with ethylenediaminetetraacetic acid (EDTA) [ 9 ] and (b) removal of calcification with ultrasonic equipment under dental operating microscope (DOM) [ 10 , 11 ]. (
  • Fluoride does horrible damage to human bones, thyroids, the pineal gland, and many other areas of the body, yet big industry, the medical establishment, and those in government continue to promote its use in tap water and in tooth paste and dental treatments. (
  • If you've lost any of your adult teeth, speak to your dentist about replacing them using dental implants . (
  • A toothbrush is a dental instrument used for cleaning teeth, ideally in conjunction with toothpaste or mouthwash. (
  • Brushing one's teeth has long been considered an important part of dental hygiene. (
  • Tooth morphogenesis and cytodifferentiations are regulated by epithelium-mesenchymal interactions, and the basement membrane plays a role in mediating these interactions Type IV collagen, the major component of the dental basement membrane, is composed of three αchains. (
  • Statistically significant relationships were determined between dental calcification and skeletal maturity stages according to Spearman rank-order correlation coefficients. (
  • Generally, the dental development can be assessed by either the phase of tooth eruption or the stage of tooth calcification, with the latter being more reliable. (
  • Experimental evidence demonstrating the influence of a special dietetic factor on the development of the teeth and jaws', Dental Record, Vol. 11 (1920). (
  • WNT5a, a ligand that can activate both canonical and non-canonical Wnt pathways [ 10 ], is expressed in the dental epithelium and mesenchyme at early developmental stages of a tooth [ 11 , 12 ]. (
  • Clinical dental fluorosis is characterized by staining and pitting of the teeth. (
  • The records of a total of 111 children (aged 0 to 6 years) seen from 2004 to 2006 in the dental trauma clinic were surveyed, comprising a total of 201 traumatized primary teeth. (
  • Data pertaining to the child and to the trauma such as age, gender, etiology, teeth involved, type of traumatic injury, time elapsed between the trauma and seeking care, and the presence and kind of clinical and radiographic sequelae in the first visit were collected from the dental records. (
  • There are several studies in the literature that evaluate the prevalence of dental traumatism in the primary and permanent dentitions, 1,2,6,12,15,16 although just a few of them present the epidemiology of primary teeth sequelae in face of these traumas. (
  • Later, De Jonge (1955) proposed the terms 'Schizodontia' to describe teeth, which originate by partial division of Dental anlage and 'Synodontia' for those formed by the inability of adjacent tooth germs to retain their individuality. (
  • The incisors showed a buccal and palatal groove from the incisal edge to the cervical portion of the tooth and were not affected either by dental caries or periodontal problems. (
  • Odontogenic keratocysts (OKCs) of the jaw are developmental cysts arising from cell rests of the dental lamina, the oral epithelial lining of the developing tooth follicle. (
  • If teeth are not brushed correctly and frequently, it could lead to the calcification of saliva minerals, forming tartar. (
  • Zinc citrate, a naturally occurring mineral, interferes with the calcification of plaque into tartar. (
  • Tartar, also known as plaque, is a coating that can be found on the teeth starting from the gum area, and coating the surface of the tooth. (
  • Tartar or plaque is a combination of bacteria and an extracellular matrix that adheres to the outer surface of the tooth. (
  • Biochemical analysis of the removed pulp calcification from one of the teeth during endodontic treatment showed large amounts of calcium , phosphorus , and carbonate. (
  • What percentage of phosphorus is in bone and teeth? (
  • Because of this, it is vitally important that expectant mothers receive foods that will supply the calcium, phosphorus, and vitamins necessary for healthy teeth. (
  • This actually came up because my spouse and her family have an extremely low incidence of cavities, etc, and I wondered aloud whether this was due to resistant teeth or what. (
  • My dentist was always amazed at how resistent my teeth were to cavities, even going to far as to suggest that X-rays make it look as if my teeth have healing powers. (
  • Modern medical research has shown that brushing teeth properly can prevent cavities, gingivitis, and periodontal, or gum, disease, which causes at least one-third of adult tooth loss. (
  • Naturally sourced fluoride remineralizes soft spots on teeth before they turn into cavities. (
  • Density-Dependent Colour Scanning Electron Micrograph SEM (DDC-SEM) of cardiovascular calcification, showing in orange calcium phosphate spherical particles (denser material) and, in green, the extracellular matrix (less dense material). (
  • a b Miller, J. D. Cardiovascular calcification: Orbicular origins. (
  • She wanted to see if calcifications seen on X-rays over a period of 13 years are associated with the onset of stroke and/or cardiovascular diseases. (
  • Calcification of the carotid artery is linked to cardiovascular diseases. (
  • Tooth loss, the most important consequence of periodontitis, has been also associated with cardiovascular disease. (
  • The purpose of this study was to investigate the relationships between the calcification stages of various teeth and skeletal maturity stages using cervical vertebrae among Indians individuals. (
  • Low concentrations are good for teeth, but excessive concentrations can lead to debilitating disease, such as skeletal fluorosis, which has devastated some communities. (
  • It is also known as a calcifying cystic odontogenic tumor, which is a proliferation of odontogenic epithelium and scattered nest of ghost cells and calcifications that may form the lining of a cyst, or present as a solid mass. (
  • Describe cyst wall calcification. (
  • Cementum is critical for anchoring the insertion of periodontal ligament fibers to the tooth root. (
  • The thin acellular cementum covers the cervical portion of the tooth root and is critical for anchoring the insertion of periodontal ligament (PDL) fibers. (
  • Periodontal involvement is typically presented immediately after tooth eruption, accompanied by severe gingival inflammation, leading to exfoliation of primary teeth by age of four to five [ 1 , 5 ]. (
  • They are often located in a periapical or lateral periodontal relationship to adjacent teeth. (
  • Red gums, teeth painful to touch, and swelling all point to periodontal problems. (
  • Movement of teeth can be caused by periodontal (gum) disease, bruxing (chronic teeth grinding and/or clenching), unrestored decay of fractures, crowding due to eruption of wisdom teeth. (
  • After tooth eruption, DF cells come in contact with root dentin through perforated Hertwig's epithelial root sheath (HERS) and then differentiate into cementum, periodontal ligament and part of the alveolar bone [ 3 - 8 ]. (
  • 6. A radiograph of a four year child reveals no evidence of calcification of mandibular second premolar. (
  • Tooth demonstrates any radicular radiolucency on a radiograph. (
  • Because of the high correlation coefficients, this study suggests that tooth calcification stages from panoramic radiograph (which is a routine diagnostic radiograph for orthodontic treatment) may be clinically useful as a maturity indicator and in age estimation. (
  • if obtainable, radiograph(s) to diagnose pulpitis or necrosis showing the involved tooth, furcation, periapical area, and the surrounding bone. (
  • The periapical radiograph exhibited that the crowns and the roots were fused with complete union of their pulp chambers and presence of single pulp chamber and root canal, which is one of the distinguishing features of geminated teeth from fusion. (
  • 16. Calcification of third molar begins at? (
  • For all the teeth except third molar root formation was completed at stage 6 of CVMI. (
  • The purpose of the experiments described below was to determine if calcification of the molar teeth was altered in rats exposed to high levels of cadmium during the period of tooth development. (
  • Shearer, TR & Britton, JL 1982, ' Calcification in molar teeth of rats exposed to cadmium during development ', Nutrition Reports International , vol. 25, no. 2, pp. 311-316. (
  • When the child is about 6, the first permanent molar comes in just behind the second molar of the primary teeth. (
  • The first permanent molar is just beginning calcification at or near birth. (
  • We observed the expression patterns of several growth factors (TGF-β, BMPs and FGFs) in the basement menbrane of mouse first molar during tooth germ development and explored the relation between these growth factors and the tooth germ-specific molecular forms of type IV collage. (
  • What percentage of calcium is found in bone and teeth? (
  • Gingival inflammation is typically revealed after primary teeth exfoliation and is recurrent as the permanent teeth erupt. (
  • For example, small, irregular, linear calcifications may be seen, via mammography , in a ductal carcinoma-in-situ to produce visible radio-opacities. (
  • A biochemical and histopathological evaluation of generalized pulp calcification in young permanent teeth. (
  • Especially in young permanent teeth with immature roots, the pulp is integral to continue apexogenesis. (
  • Malignant lesions may have stippled or eccentric calcification. (
  • Palmoplantar lesions are usually presented during the time of tooth eruption between the ages of six months to three years. (
  • Typical deciduous teeth. (
  • There are 20 primary teeth, called also deciduous teeth, baby teeth, or milk teeth, which are eventually replaced by 32 permanent teeth, evenly divided between the upper and lower jaws. (
  • Tooth, deciduous. (
  • FGF-2 and TGF-β1 may play an important role in early tooth morphogenesis and cytodifferentiation in cooperation with the molecular form, α3(IV)α4(IV)α5(IV), which exsists in the early stage of tooth development. (
  • 1, 2) The fusion may be partial or total depending upon the stage of tooth development at the time of union, a distinguishing feature between fusio-totalis, partialis-coronaries and partialis-radicularis. (
  • Irregular calcifications may be seen in some cases. (
  • Fluoride also accumulates in the body, including the blood vessels, where it can contribute to calcification. (
  • 13 In endodontics, however, there is no standard solution for testing bioceramic materials, or any studies that determine what would be the best solution for in vitro simulation of natural dentin moisture in vivo for endodontically treated teeth. (
  • In this context, the access to calcified teeth has to face a high risk of unpredictable dentin destruction in the buccolingual direction. (
  • Although such calcification is usually distinguished from dentin in colour, the differentiation is still confusing for the dentists with less clinical experience. (
  • So, maximum attempts are made to preserve primary teeth in a healthy state until normal exfoliation of teeth occurs. (
  • Gum disease occurs when plaque builds up, forming a gelatinous film that coats the teeth and gums. (
  • The most common age group in which primary tooth injury occurs is 1 to 3 years. (
  • 3, 4) If the contact occurs before the calcification stage, the teeth unite completely and form one large tooth. (
  • In the early developmental stages, the DF surrounds the tooth germ as a sphere and functions to promote tooth eruption. (
  • Researchers at the University of North Carolina School of Dentistry have potentially linked statins to increased calcification of the tooth's pulp chamber. (
  • The results revealed that the patients taking statins showed a significant reduction in the pulp chamber height, meaning an increased calcification of the pulp chamber, when compared to the control group," said Dr. Mary Pettiette, associate professor in the Department of Endodontics. (
  • Based on this limited data, systemic statins could be a contributing factor for pulp chamber calcification. (
  • Occasionally a primary tooth root does not resorb, and as a result the permanent tooth comes in outside its proper position. (
  • Any patient 7 years old or older who requires a direct pulp cap of a permanent tooth. (
  • Long term retention of a permanent tooth requires a root with a favorable crown/root ratio and dentinal walls that are thick enough to withstand normal function. (
  • In vivo measurements of irreversible and reversible transverse relaxation rates in human basal ganglia at 7 T: making inferences about the microscopic and mesoscopic structure of iron and calcification deposits. (
  • Those deposits are the calcification. (
  • B. The cavity lying at the upper end of the alimentary canal, bounded on the outside by the lips and inside by the oropharynx and containing in higher vertebrates the tongue, gums, and teeth. (
  • SmithKline Beecham designed the AquaFresh Flex, with a flexible, angled handle intended to reduce the pressure put on gums and teeth. (
  • This involves looking after your teeth and gums to ensure that they are healthy and functioning optimally. (
  • Having a layer of plaque on the teeth and gums means they are more vulnerable to disease. (
  • As the calcification of the plaque takes place, the hardened substance causes even more problems for the gums. (
  • Thirteen teeth with sixteen calcified canals (12 calcified in the upper third, 4 calcified in the middle third), which cannot be negotiated with conventional methods, were treated with the aid of CBCT. (
  • In all thirteen teeth, canals with upper and middle thirds calcification were treated successfully. (
  • The materials used to treat and fill the canals in the tooth during the root canal procedure have posed many alarms also. (
  • In Europe a material called Biocalex has been used for over twenty years to fill the canals of a tooth for root canal treatment. (
  • Different types of teeth (molars, premolars, canines, incisors) characteristically have differing numbers of roots and root canals . (
  • The anatomy of the root canals inside a tooth can display variations. (
  • Other symptoms may include hearing loss , tooth decay, vision problems, and bone abnormalities. (
  • She recommended a diet high in Vitamin D and low in cereals to help teeth protect themselves against decay. (
  • The two main problems that can occur are teeth decay and gum disease. (
  • It is essentially a sticky layer of different types of bacteria which will end up causing tooth decay and gum disease. (
  • The baby teeth maintain the arch integrity and maintain the space for the eruption of the permanent teeth or the adult teeth but if the baby teeth or the milk teeth are lost before the time the space will be lost and the adult teeth will not erupt in their normal position. (
  • Histologic examination revealed an odontogenic keratocyst with no evidence of mineralization or calcification within the lesion. (
  • Most recently I have been examining carapace formation and calcification in crustaceans. (
  • Therefore, it is thought that these forms is related to morphogenesis and cytodifferentiation characteristic of tooth development that regulated y epithelial-mesenchymal interactions. (
  • Root canal calcification is considered a great challenge during root canal treatment. (
  • The calcification of root canal orifices can render locating the root canal more difficult. (
  • No recommendation for tooth extraction or root canal therapy. (
  • Researchers performed root canal procedures on 20 teeth with each of the three types of instruments. (
  • They also scanned teeth after root canal preparation. (
  • This is result of research indicating the presence of residual infections even after the root canal has been performed and completed in a tooth. (
  • Any altered energy in a tooth, whether it be caused by a root canal, ill fitting crowns or fillings, or materials in them that are not compatible with the body, will also block and affect different organ systems in the same meridian. (
  • If a tooth is pulled, instead of treated with root canal procedure, the homeostasis of the area in the mouth is still altered. (
  • Of course, 20/20 hindsight has a rule that prevention is best so that you don't get to the point of having to make the decision of root canal vs pulling a tooth. (
  • If a large infection does not exist in a tooth, then root canal filled with Biocalex is a good alternative. (
  • Other issues involve factors related to the tooth, its root canal system or condition that any dentist, or even specialist, would have difficulty overcoming, if possible at all. (
  • 1. Exposure of the teeth because of caries or by mechanical means. (
  • Effect of diet on the resistance of teeth to caries', Proceedings of the Royal Society of Medicine (Sect. (
  • The influence of diet on caries in children's teeth, London: H.M.S.O., 1936. (
  • It is a treatment objective to maintain the vitality of the pulp of a tooth affected by caries, traumatic injury, or other causes. (
  • The deficiency of vitamin D causes rickets, inappropriate teeth development and faulty bone growth. (
  • Structure of biological apatites.Calcification and reabsorption mechanism. (
  • Papillon-Lefèvre syndrome (PLS) is a rare, autosomal recessive heterogeneous disorder, which is characterized by palmoplantar hyperkeratosis, early loss of primary and permanent teeth, and associated calcification of the dura mater. (
  • PLS is characterized by palmoplantar hyperkeratosis, early loss of primary and permanent teeth, and associated calcification of the dura mater [ 2 , 3 ]. (
  • Adequate calcium is essential for strong bones and healthy teeth, but excess calcium in your body can result when your kidneys do not excrete the excess. (
  • In my research on calcification I have studied shell formation in mollusks, spicule formation in sea urchins, tooth structure in fishes, and bone formation in chickens and rats. (
  • The tooth must exhibit a vital pulp upon exposure. (
  • This is an irreversible condition caused by excessive exposure to fluoride that can lead to permanent damage to the teeth and bone formation. (
  • It tends to accumulate in bone regions undergoing the most active calcification at the time of exposure. (
  • Then they performed a glide path with a No. 10 K-file (Dentsply Sirona), and they determined the working length of each tooth and that the ratio of buccolingual to mesiodistal coronal third dimensions was similar for each experimental group. (
  • As the adult teeth calcify, the roots of the primary ones gradually disappear, or resorb, and are completely gone by the time the permanent teeth are ready to appear. (
  • The roots of fused primary teeth had not resorbed. (
  • Specific roots of some types of teeth are well know for having, or frequently having, multiple canal configurations, and because of this should always be suspected of having more than one. (
  • Given our growing social calcification, the need to boost growth and social mobility is great. (
  • Vitamin D, also known as Cholecalciferol, helps absorb calcium which is essential for signaling between brain cells, development of bone, and tooth formation. (
  • An experimental study of the influence of diet on teeth formation', The Lancet, Vol. 62 (1918). (