Root Canal Therapy
Dental Restoration, Permanent
Tooth Preparation, Prosthodontic
Dosage requirement of Pitx2 for development of multiple organs. (1/272)Pitx2 is a homeodomain transcription factor that is mutated in Rieger syndrome, a haploinsufficiency disorder affecting eyes and teeth. Pitx2 also has a postulated role in left-right axis determination. We assessed the requirements for Pitx2 directly by generating hypomorphic and null alleles. Heterozygotes for either allele have eye abnormalities consistent with Rieger syndrome. The ventral body wall fails to close in embryos homozygous for the null allele, leaving the heart and abdominal organs externalized and the body axis contorted. In homozygotes for either allele, the heart tube undergoes normal, rightward looping and the stomach is positioned normally. In contrast, homozygotes for both alleles exhibit right isomerization of the lungs. Thus, Pitx2 is required for left-right asymmetry of the lungs but not other organs. Homozygotes for either allele exhibit septal and valve defects, and null homozygotes have a single atrium proving that a threshold level of Pitx2 is required for normal heart development. Null homozygotes exhibit arrest of pituitary gland development at the committed Rathke pouch stage and eye defects including optic nerve coloboma and absence of ocular muscles. This allelic series establishes that Pitx2 is required for the development of mulitple organs in a dosage-sensitive manner. (+info)
Cre-mediated gene inactivation demonstrates that FGF8 is required for cell survival and patterning of the first branchial arch. (2/272)In mammals, the first branchial arch (BA1) develops into a number of craniofacial skeletal elements including the jaws and teeth. Outgrowth and patterning of BA1 during early embryogenesis is thought to be controlled by signals from its covering ectoderm. Here we used Cre/loxP technology to inactivate the mouse Fgf8 gene in this ectoderm and have obtained genetic evidence that FGF8 has a dual function in BA1: it promotes mesenchymal cell survival and induces a developmental program required for BA1 morphogenesis. Newborn mutants lack most BA1-derived structures except those that develop from the distal-most region of BA1, including lower incisors. The data suggest that the BA1 primordium is specified into a large proximal region that is controlled by FGF8, and a small distal region that depends on other signaling molecules for its outgrowth and patterning. Because the mutant mice resemble humans with first arch syndromes that include agnathia, our results raise the possibility that some of these syndromes are caused by mutations that affect FGF8 signaling in BA1 ectoderm. (+info)
Dental manifestations in severe combined immunodeficiency following bone marrow transplantation. (3/272)Severe combined immunodeficiency (SCID) is a rare primary immunodeficiency disorder with an estimated overall frequency of 1 in 75 000 live births. Bone marrow transplantation is the only curative treatment available. Using T cell-depleted HLA non-identical bone marrow requires preconditioning with a short course of cytotoxic chemotherapy. We report severe dental developmental anomalies in three such patients under long-term follow up. (+info)
Sonic hedgehog regulates growth and morphogenesis of the tooth. (4/272)During mammalian tooth development, the oral ectoderm and mesenchyme coordinate their growth and differentiation to give rise to organs with precise shapes, sizes and functions. The initial ingrowth of the dental epithelium and its associated dental mesenchyme gives rise to the tooth bud. Next, the epithelial component folds to give the tooth its shape. Coincident with this process, adjacent epithelial and mesenchymal cells differentiate into enamel-secreting ameloblasts and dentin-secreting odontoblasts, respectively. Growth, morphogenesis and differentiation of the epithelium and mesenchyme are coordinated by secreted signaling proteins. Sonic hedgehog (Shh) encodes a signaling peptide which is present in the oral epithelium prior to invagination and in the tooth epithelium throughout its development. We have addressed the role of Shh in the developing tooth in mouse by using a conditional allele to remove Shh activity shortly after ingrowth of the dental epithelium. Reduction and then loss of Shh function results in a cap stage tooth rudiment in which the morphology is severely disrupted. The overall size of the tooth is reduced and both the lingual epithelial invagination and the dental cord are absent. However, the enamel knot, a putative organizer of crown formation, is present and expresses Fgf4, Wnt10b, Bmp2 and Lef1, as in the wild type. At birth, the size and the shape of the teeth are severely affected and the polarity and organization of the ameloblast and odontoblast layers is disrupted. However, both dentin- and enamel-specific markers are expressed and a large amount of tooth-specific extracellular matrix is produced. This observation was confirmed by grafting studies in which tooth rudiments were cultured for several days under kidney capsules. Under these conditions, both enamel and dentin were deposited even though the enamel and dentin layers remained disorganized. These studies demonstrate that Shh regulates growth and determines the shape of the tooth. However, Shh signaling is not essential for differentiation of ameloblasts or odontoblasts. (+info)
The Class II Division 2 craniofacial type is associated with numerous congenital tooth anomalies. (5/272)The aim of the present study was to examine whether a putative relationship exists between the Class II division 2 craniofacial type and congenital anomalies of the dentition, such as missing teeth, peg-shaped laterals, transpositions, supernumerary teeth and canine impactions. Two hundred and sixty-seven untreated patients with Class II division 2 malocclusion were examined. The results show that 56.6 per cent of the patients exhibited some form of congenital tooth anomaly, 13.9 per cent agenesis of the upper lateral incisors, 7.5 per cent peg-shaped upper laterals, while impacted canines were present in 33.5 per cent of the subjects. Transpositions were present in 1.1 per cent of the patients and in all cases the canine was involved. No patient exhibited a supernumerary tooth. Comparing the results of the present study with existing data on the percentage of congenital tooth anomalies in the general population, it can be concluded that Class II division 2 malocclusions are closely associated with congenital tooth anomalies. (+info)
A radiographic comparison of apical root resorption after orthodontic treatment with a standard edgewise and a straight-wire edgewise technique. (6/272)The purpose of this study was to compare the severity of apical root resorption occurring in patients treated with a standard edgewise and a straight-wire edgewise technique, and to assess the influence of known risk factors on root resorption incident to orthodontic treatment. The sample consisted of 80 patients with Angle Class II division 1 malocclusions, treated with extraction of at least two maxillary first premolars. Variables recorded for each patient included gender, age, ANB angle, overjet, overbite, trauma, habits, invagination, agenesis, tooth shedding, treatment duration, use of Class II elastics, body-build, general factors, impacted canines, and root form deviation. Forty patients were treated with a standard edgewise and 40 with a straight-wire edgewise technique, both with 0.018-inch slot brackets. Crown and root lengths of the maxillary incisors were measured on pre- and post-treatment periapical radiographs corrected for image distortion. Percentage of root shortening and root length loss in millimetres were then calculated. There was significantly more apical root resorption (P < 0.05) of both central incisors in the standard than in the straight-wire edgewise group. No significant difference was found for the lateral incisors. Root shortening of the lateral incisors was significantly associated with age, agenesis, duration of contraction period (distalization of incisors), and invagination, while root shortening of the central incisors was related to treatment group and trauma. (+info)
Tooth discolouration and staining: a review of the literature. (7/272)OBJECTIVE: To carry out an extensive review of the literature on tooth staining with particular regard to some of the more recent literature on the mechanisms of tooth staining involving mouthrinses. DESIGN: Comprehensive review of the literature over four decades. CONCLUSIONS: A knowledge of the aetiology of tooth staining is of importance to dental surgeons in order to enable a correct diagnosis to be made when examining a discoloured dentition and allows the dental practitioner to explain to the patient the exact nature of the condition. In some instances, the mechanism of staining may have an effect on the outcome of treatment and influence the treatment options the dentist will be able to offer to patients. (+info)
Congenital tooth anomalies and malocclusions: a genetic link? (8/272)The aim of the present study was to investigate putative relationships between different malocclusions such as Class III and Class II division 1, and congenital tooth anomalies. Two-hundred Class III and 215 Class II division 1 patients were examined for the presence of any of the following congenital tooth anomalies: maxillary incisor hypodontia, maxillary canine impaction, transpositions, supernumerary teeth, and tooth agenesis. Their occurrence rates were then calculated as a percentage of the total sample and were compared for statistical differences. The results revealed no statistical difference (P > 0.05) in the occurrence rates of upper lateral incisor agenesis, peg-shaped laterals, impacted canines, or supernumerary teeth between the Class III and the Class II division 1 malocclusions. When the occurrence rate of all congenital tooth anomalies was compared between the two malocclusions, Class III subjects showed significantly higher rates (P < 0.05). Comparison with published surveys on general populations showed similar occurrence rates. It can be concluded that subjects with Class III and Class II division 1 malocclusions show patterns of congenital tooth anomalies similar to those observed in the general population. Congenital tooth anomalies may represent another criterion for the study of malocclusion, with respect to their origin and development. (+info)
Tooth abnormalities refer to any deviation from the normal structure, shape, or function of teeth. These abnormalities can be congenital, meaning present at birth, or acquired later in life due to injury, disease, or other factors. Some common examples of tooth abnormalities include: 1. Malocclusion: This refers to an incorrect alignment of the teeth, which can cause problems with chewing, speaking, and overall oral health. 2. Tooth decay: This occurs when bacteria in the mouth produce acid that erodes the tooth enamel, leading to cavities and other dental problems. 3. Tooth sensitivity: This can be caused by a variety of factors, including tooth decay, gum disease, or exposure of the tooth root. 4. Tooth erosion: This occurs when the tooth enamel is worn away due to acid from the stomach or other sources. 5. Tooth discoloration: This can be caused by a variety of factors, including genetics, age, smoking, or certain medications. 6. Tooth abnormalities due to injury: This can include chips, cracks, or fractures in the tooth, as well as missing teeth. 7. Tooth abnormalities due to disease: This can include conditions such as periodontitis (gum disease), which can cause tooth loss, or oral cancer, which can affect the shape and function of the teeth. Treatment for tooth abnormalities depends on the specific condition and may include dental procedures such as fillings, crowns, bridges, or implants, as well as lifestyle changes such as improving oral hygiene habits or quitting smoking.
Tooth loss, also known as edentulism, is a condition in which one or more teeth are missing from the mouth. This can occur due to a variety of factors, including tooth decay, gum disease, injury, or genetics. Tooth loss can have a significant impact on a person's ability to chew and digest food, as well as their overall oral health and appearance. In some cases, tooth loss may require the use of dental implants, dentures, or other restorative treatments to replace the missing teeth.
In the medical field, a supernumerary tooth is a tooth that is present in addition to the normal number of teeth for an individual. Supernumerary teeth can occur in any part of the mouth, but they are most commonly found in the maxillary (upper) premolar region. Supernumerary teeth can be classified based on their location and shape. The most common types are: 1. Mesiodens: This is a supernumerary tooth that is located between the two central incisors. It is the most common type of supernumerary tooth. 2. Paramolar: This is a supernumerary tooth that is located next to the first molar. 3. Distomolar: This is a supernumerary tooth that is located next to the second molar. 4. Accessory: This is a supernumerary tooth that is located anywhere else in the mouth. Supernumerary teeth can cause a variety of problems, including crowding, misalignment, and impaction. They may also lead to dental caries (cavities) if they are not properly cared for. Treatment options for supernumerary teeth depend on their location, size, and whether they are causing any problems. In some cases, they may need to be removed surgically.
Tooth wear is a common dental condition that refers to the gradual loss of tooth structure due to various factors. It can occur on the surface of the tooth or extend deeper into the tooth structure, affecting the shape, size, and function of the tooth. There are several types of tooth wear, including: 1. Attrition: This is the most common type of tooth wear, which occurs when the tooth surfaces rub against each other, causing the enamel and dentin to wear down. 2. Abrasion: This type of tooth wear occurs when the tooth surface is worn down by external factors such as brushing too hard, grinding teeth, or consuming acidic foods and drinks. 3. Erosion: This type of tooth wear occurs when the tooth surface is worn down by chemical factors such as acid reflux, stomach acid, or frequent exposure to acidic foods and drinks. Tooth wear can cause a variety of dental problems, including sensitivity, pain, difficulty chewing, and even tooth loss. Treatment options for tooth wear depend on the severity of the condition and may include dental bonding, dental crowns, or dental veneers. It is important to maintain good oral hygiene and visit a dentist regularly to prevent and manage tooth wear.
In the medical field, "Tooth, Nonvital" refers to a tooth that has lost its blood supply and is no longer alive. This can occur due to injury, infection, or other factors that damage the tooth's pulp, which is the soft tissue inside the tooth that contains nerves, blood vessels, and connective tissue. A nonvital tooth may become sensitive to hot and cold temperatures, pain when biting or chewing, or may have an unpleasant taste. If left untreated, a nonvital tooth can lead to further complications such as infection, abscess, or tooth loss. Treatment options for a nonvital tooth may include root canal therapy, which involves removing the damaged pulp and filling the tooth with a special material to prevent further infection, or extraction and replacement with a dental implant or bridge.
In the medical field, an "impacted tooth" refers to a tooth that is unable to fully emerge from the gums due to a lack of space or obstruction. This can occur in any of the three main types of teeth: incisors, canines, and molars. There are several reasons why a tooth may become impacted. One common cause is a lack of space in the jawbone, which can occur due to genetics or developmental issues. Other factors that can contribute to tooth impaction include cysts, tumors, or other abnormalities in the jawbone. Impacted teeth can cause a variety of problems, including pain, swelling, and infection. In some cases, an impacted tooth may also damage neighboring teeth or lead to gum disease. Treatment options for impacted teeth depend on the severity of the problem and may include extraction, orthodontic treatment, or surgery to remove the obstruction preventing the tooth from emerging.
Tooth discoloration refers to a change in the color of the tooth's surface or enamel. It can be caused by various factors, including age, genetics, diet, tobacco use, certain medications, and dental procedures such as teeth whitening. Tooth discoloration can range from mild to severe and can affect one or multiple teeth. In some cases, tooth discoloration may be a sign of an underlying dental or medical condition, such as tooth decay, gum disease, or a systemic illness. Treatment options for tooth discoloration depend on the cause and severity of the discoloration and may include professional teeth whitening, dental veneers, or tooth bonding.
In the medical field, an "unerupted tooth" refers to a tooth that has not yet broken through the gums and become visible in the mouth. This can happen for a variety of reasons, including genetic factors, hormonal changes, or dental problems that prevent the tooth from erupting properly. Unerupted teeth can be found in both children and adults, and they can affect the alignment and spacing of the teeth in the mouth. In some cases, an unerupted tooth may need to be surgically removed or guided into the correct position in order to prevent dental problems such as overcrowding or malocclusion.
Tooth avulsion is a medical term used to describe the complete displacement or separation of a tooth from its socket due to trauma or injury. This can occur as a result of a blow to the mouth, a fall, or other types of accidents. Tooth avulsion is a serious dental emergency that requires immediate attention to prevent further damage to the tooth and surrounding tissues. Treatment typically involves reinserting the tooth into its socket as soon as possible, followed by splinting and other supportive measures to promote healing. In some cases, if the tooth is not reinserted within a certain time frame, it may need to be extracted and replaced with a dental implant or bridge.
Fused teeth, also known as conjoined teeth or syndesmosis, is a dental condition in which two or more teeth are joined together by a band of tissue called a syndesmosis. This can occur in both primary (baby) and permanent teeth. Fused teeth can be caused by a variety of factors, including genetics, environmental factors, and developmental abnormalities. In some cases, the condition may be asymptomatic and discovered during routine dental exams. However, in other cases, fused teeth can cause problems with chewing, speech, and aesthetics. Treatment for fused teeth depends on the severity of the condition and the age of the patient. In some cases, the teeth may be separated surgically, while in other cases, the condition may be monitored and treated with orthodontic appliances or other dental procedures. It is important to consult with a dentist or oral surgeon for proper diagnosis and treatment of fused teeth.
In the medical field, a "Cuspid" refers to one of the four sharp, pointed teeth located in the upper and lower jaws, also known as the canines. These teeth are located on either side of the incisors and are used for tearing and holding food. The cuspid is an important part of the dental arch and plays a crucial role in proper chewing and speaking. Problems with the cuspid, such as decay or damage, can affect a person's ability to eat and speak properly, as well as their overall oral health.
Tooth diseases refer to a group of conditions that affect the teeth and gums. These diseases can range from mild to severe and can cause pain, discomfort, and other symptoms. Some common tooth diseases include: 1. Dental caries (cavities): This is a bacterial infection that causes tooth decay and can lead to the formation of cavities. 2. Gum disease (periodontal disease): This is an infection of the gums that can cause inflammation, bleeding, and eventually tooth loss. 3. Tooth sensitivity: This is a condition where the teeth become sensitive to hot, cold, sweet, or sour foods and drinks. 4. Tooth erosion: This is the gradual wearing away of tooth enamel due to acid erosion from foods and drinks or acid reflux. 5. Tooth abscess: This is an infection that forms in the pulp of a tooth and can cause severe pain and swelling. 6. Tooth fracture: This is a break or crack in the tooth that can occur due to trauma or decay. 7. Tooth decay: This is the breakdown of tooth enamel and dentin caused by bacteria in the mouth. 8. Tooth discoloration: This is a change in the color of the tooth due to stains, aging, or other factors. 9. Tooth wear: This is the gradual wearing down of tooth enamel and dentin due to normal wear and tear or habits such as grinding or clenching. 10. Tooth loss: This is the complete or partial loss of one or more teeth due to decay, gum disease, injury, or other factors.
In the medical field, "Bicuspid" refers to a condition where a person has two cusps (the pointed ends of the valves in the heart) instead of the normal three. This condition is also known as "bicuspid aortic valve" or "BAV." Bicuspid aortic valve is a common congenital heart defect that affects the aortic valve, which is responsible for regulating blood flow from the heart to the rest of the body. In a bicuspid aortic valve, the two cusps may not function properly, leading to problems such as regurgitation (leaking of blood back into the heart), stenosis (narrowing of the valve), and aneurysm (ballooning of the aorta). Bicuspid aortic valve can be diagnosed through a physical examination, echocardiogram (an ultrasound of the heart), or other imaging tests. Treatment options may include medication, lifestyle changes, or surgery, depending on the severity of the condition.
Tooth ankylosis is a condition in which the tooth becomes firmly attached to the jawbone, often due to an injury or infection. This can cause the tooth to become immobile and may lead to problems with chewing and speaking. In some cases, ankylosis can also lead to the tooth becoming loose or falling out. Treatment for tooth ankylosis may involve surgery to remove the affected tooth and replace it with a dental implant or bridge.
Tooth erosion is a dental condition that occurs when the hard outer layer of the tooth, called the enamel, is worn away by acids. This can happen due to various factors, including exposure to acidic foods and drinks, frequent vomiting or regurgitation, certain medical conditions, and certain habits such as teeth grinding or clenching. Tooth erosion can cause a number of problems, including sensitivity to hot and cold, difficulty chewing, and an unattractive appearance of the teeth. In severe cases, it can lead to tooth decay and even tooth loss. Treatment for tooth erosion depends on the severity of the condition. In mild cases, simply changing one's diet and avoiding acidic foods and drinks may be enough to slow or stop the erosion. In more severe cases, a dentist may recommend fluoride treatments, dental bonding, or other restorative procedures to repair the damaged teeth.
Tooth resorption is a process in which the body breaks down and absorbs its own tooth structure. It can occur in both the root and the crown of a tooth, and can be caused by a variety of factors, including injury, infection, and certain medications. Tooth resorption can lead to tooth sensitivity, pain, and eventually tooth loss if left untreated. It is typically diagnosed through dental X-rays and treated with a range of procedures, depending on the severity of the resorption and the underlying cause.
Dental caries, also known as tooth decay, is a common dental disease that affects the hard tissues of the teeth, including the enamel, dentin, and pulp. It is caused by the demineralization of tooth enamel due to the production of acid by bacteria in the mouth. The bacteria in the mouth feed on sugars and starches in the food we eat, producing acid as a byproduct. This acid can erode the enamel on the teeth, leading to the formation of cavities. If left untreated, dental caries can progress and cause damage to the underlying dentin and pulp, leading to pain, infection, and tooth loss. Dental caries is a preventable disease through good oral hygiene practices, such as brushing and flossing regularly, using fluoride toothpaste and mouthwash, and limiting sugary and acidic foods and drinks. Early detection and treatment of dental caries can help prevent more serious complications and maintain good oral health.
Multiple abnormalities in the medical field refer to the presence of two or more abnormal conditions or findings in a person's body or health status. These abnormalities can be related to various organs or systems in the body and can be caused by a variety of factors, including genetic disorders, infections, injuries, or chronic diseases. Examples of multiple abnormalities that may be seen in a medical setting include multiple birth defects, multiple tumors, multiple infections, or multiple chronic conditions such as diabetes, hypertension, and heart disease. The presence of multiple abnormalities can complicate diagnosis and treatment, as it may require a more comprehensive approach to identify the underlying causes and develop effective management plans.
Tooth demineralization is a process in which minerals in tooth enamel are gradually lost due to exposure to acidic substances, such as sugary drinks, fruit juices, and certain foods. This loss of minerals weakens the tooth structure and can lead to the development of cavities, also known as dental caries. Tooth demineralization can occur at any age, but it is most common in children and adolescents who are still developing their permanent teeth. It can also occur in adults who have poor oral hygiene or who consume a diet high in sugar and acidic foods and beverages. Treatment for tooth demineralization typically involves the use of fluoride toothpaste, mouth rinses, and professional dental cleanings to remineralize the tooth and prevent further decay. In more severe cases, dental fillings or other restorative procedures may be necessary.
Anodontia is a medical condition characterized by the absence of teeth in one or more areas of the mouth. It can be a congenital condition, meaning that a person is born without teeth, or it can develop later in life due to injury, disease, or other factors. Anodontia can affect the upper or lower jaw, or both, and can range from mild to severe. In severe cases, a person may have no teeth at all. Anodontia can have a significant impact on a person's ability to chew, speak, and maintain good oral hygiene, and may require treatment such as dental implants or dentures.
In the medical field, the alveolar process refers to the bony structure that forms the roof of the alveolar sockets, which are the depressions in the maxilla and mandible where the teeth are anchored. The alveolar process is composed of two parts: the alveolar crest, which is the highest point of the alveolar process, and the alveolar base, which is the bottom part of the alveolar process. The alveolar process plays an important role in the support and retention of the teeth. It provides a stable foundation for the teeth to anchor to, and it also helps to distribute the forces generated by chewing and biting. In addition, the alveolar process is involved in the formation of the periodontal ligament, which connects the teeth to the bone and helps to maintain the stability of the teeth. In some cases, the alveolar process may be damaged or lost due to injury, infection, or other factors. In such cases, dental implants or other forms of tooth replacement may be necessary to restore the function and appearance of the teeth.
Age determination by teeth is a method used by forensic odontologists to estimate the age of a person based on the development and wear of their teeth. This method is commonly used in forensic investigations, particularly in cases where the age of a deceased individual is unknown or disputed. The process of age determination by teeth involves examining the teeth for signs of development, wear, and damage. The development of teeth can provide information about a person's age at death, as certain stages of tooth development are associated with specific ages. For example, the presence of certain types of baby teeth or the absence of certain adult teeth can indicate a person's age. Wear on the teeth can also provide information about a person's age, as the rate of tooth wear can vary depending on factors such as diet, oral hygiene, and genetics. Damage to the teeth, such as fractures or chips, can also provide clues about a person's age and lifestyle. Overall, age determination by teeth is a useful tool for forensic investigators, but it should be used in conjunction with other methods of age estimation to provide a more accurate picture of a person's age at death.
Infant oral mutilation
Philip R. N. Sutton
Human tooth development
Skhul and Qafzeh hominins
Occupational hazards in dentistry
List of dental abnormalities associated with cutaneous conditions
Tell Abu Hureyra
Pharos : Disease Details - nail and teeth abnormalities-marginal palmoplantar keratoderma-oral hyperpigmentation syndrome
Temporomandibular Joint (TMJ) Meniscus Abnormality Imaging: Practice Essentials, Radiography, Computed Tomography
Amelogenesis imperfecta: MedlinePlus Medical Encyclopedia
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Hobbits Were a Separate Species, Ancient Chompers Show - Scientific American
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- Nail and teeth abnormalities-marginal palmoplantar keratoderma-oral hyperpigmentation syndrome is a rare genetic ectodermal dysplasia syndrome characterized by short stature, nail dystrophy and/or nail loss, oral mucosa and/or tongue hyperpigmentation, dentition abnormalities (delayed teeth eruption, hypodontia, enamel hypoplasia), keratoderma on the margins of the palms and soles and focal hyperkeratosis on the dorsum of the hands and feet. (nih.gov)
- It causes the tooth enamel to be thin and abnormally formed. (medlineplus.gov)
- Enamel is the outer layer of the coronal, or crown portion of the teeth. (medlineplus.gov)
- The enamel of the tooth is soft and thin. (medlineplus.gov)
- The enamel is easily damaged, which affects the appearance of the teeth, especially if left untreated. (medlineplus.gov)
- Enamel is the most mineralized of the calcified tissues of the body, and it is the most radiopaque of the 3 tooth layers. (medscape.com)
- The four components of teeth are enamel, dentine, pulp and cementum. (bpac.org.nz)
- Dental enamel protects the tooth from fracture and wear and is not regenerated once damaged. (bpac.org.nz)
- Chalky white spots on the teeth enamel may indicate areas of demineralisation which is an early sign of dental caries. (bpac.org.nz)
- Patients with preexisting restorations, cervical erosions, enamel cracks, large pulp chambers, or sensitive teeth before treatment are at higher risk for postbleaching sensitivity. (medscape.com)
- For instance, the canine and premolar teeth looked primitive, whereas the molar teeth looked advanced, or as if they had emerged later in the evolution of Homo sapiens , the scientists said. (scientificamerican.com)
- The front incisors are most commonly the first teeth to erupt, followed by the first primary molar, canines and second primary molars. (bpac.org.nz)
- George's acute problems centered around two recent dental procedures: a dental implant to replace his missing lower molar and a completed root canal on a tooth that was abscessed. (drbicuspid.com)
- Early diagnosis and adequate treatment are very important when addressing this abnormality in the mixed dentition. (bvsalud.org)
- in others (eg, certain cases of Charcot-Marie-Tooth disease type 1A (CMT1A) and inherited brachial plexus neuropathy [IBPN]/hereditary neuralgic amyotrophy [HNA]), proximal weakness predominates. (medscape.com)
- Charcot-Marie-Tooth disease and sleep apnoea syndrome: A family study. (mda.org)
- Increased prevalence of obstructive sleep apnoea in patients with Charcot-Marie-Tooth disease: A case control study. (mda.org)
- A Locus for an Axonal Form of Autosomal Recessive Charcot-Marie-Tooth Disease Maps to Chromosome 1q21.2-q21.3. (mda.org)
- Autosomal recessive axonal Charcot-Marie-Tooth disease (ARCMT2): Phenotype-genotype correlations in 13 Moroccan families. (mda.org)
- Epidemiologic Study of Charcot-Marie-Tooth Disease: A Systematic Review. (mda.org)
- Reilly, M. M. Axonal Charcot-Marie-Tooth disease: the fog is slowly lifting! (mda.org)
- Glycyl tRNA Synthetase Mutations in Charcot-Marie-Tooth Disease Type 2D and Distal Spinal Muscular Atrophy Type V. (mda.org)
- A new variant of Charcot-Marie-Tooth disease type 2 is probably the result of a mutation in the neurofilament-light gene. (mda.org)
- Further evidence that neurofilament light chain gene mutations can cause Charcot-Marie-Tooth disease type 2E. (mda.org)
- Mutant small heat-shock protein 27 causes axonal Charcot-Marie-Tooth disease and distal hereditary motor neuropathy. (mda.org)
- FIG4 is also associated with other conditions, including Charcot-Marie-Tooth Disease 4J and Amyotrophic Lateral Sclerosis 11. (expresshealthcaremgmt.com)
- The occurrence of hypodontia (absence of teeth) and hyperdontia (presence of supernumerary teeth) in the same patient is a rarely seen condition in dental practice. (bvsalud.org)
- Choosing Your Dentist Going to the dentist is usually not an appointment many look forward to, but if you want to keep your teeth white and your gums healthy, itâ€™s a necessity. (themomblogs.com)
Eruption of primary2
- However, sometimes abnormalities or variations occur in the shape or form of the tooth, which may be due to developmental causes , or environmental causes such as trauma or genetic causes. (intelligentdental.com)
- Accelerated primary or permanent tooth eruption may occur in children who are obese, and delayed eruption may occur in those who were born pre-term. (bpac.org.nz)
- As floss scrapes between tighter teeth with less space, high-pitched grinding and snapping noises can occur. (cdhp.org)
- Tooth migration is common in later stages, and tooth loss can occur. (msdmanuals.com)
- It could occur if too much pressure was applied to the tooth by his dentist when he performed the root canal, or heavy chewing pressure could cause the fracture. (drbicuspid.com)
- The crown of each tooth has 5 surfaces: buccal (facing the cheek or lip), lingual (facing the tongue), mesial (between the teeth), distal (between the teeth), and chewing (occlusal for molars and premolars, incisal for incisors and canines). (medscape.com)
- Examine the teeth, gingiva, tongue and oral cavity for abnormalities. (bpac.org.nz)
- Observe abnormalities of tongue movement. (medscape.com)
- The position of the teeth inside the jaws and the shape of the occlusion are determined by developmental processes that act on these and their associated structures during the periods of formation, growth and postnatal modification. (sld.cu)
- The way your teeth fit together when you bite down is referred to as your occlusion. (cdhp.org)
- In developmental or acquired deformities and conditions , faulty occlusion, causing an excessive functional load on teeth, plus the requisite plaque and gingivitis may contribute to progression of a particular type of periodontitis characterized by angular bony defects. (msdmanuals.com)
- Ocular findings, if present, include both retinal and nonretinal abnormalities, usually related to vascular occlusion. (logicalimages.com)
- The teeth are involved in all 3 roles, and dental diseases can be a source of multiple problems, including oral and systemic infections and difficulty in chewing, swallowing, or phonation. (medscape.com)
- A tooth is composed of a crown (ie, the portion exposed to the oral cavity) and 1 or more roots (ie, the portion enveloped in bone and the periodontium). (medscape.com)
- In order to recognise abnormal oral health in children, it is important to understand the normal pattern of tooth development and appearance of the mouth. (bpac.org.nz)
- Maintaining oral hygiene is crucial, so consider brushing your cat's teeth regularly. (kcmuseum.org)
- Periodontitis is a chronic inflammatory oral disease that progressively destroys the tooth-supporting apparatus. (msdmanuals.com)
- Routine veterinary dentistry involves prophylaxis (teeth cleaning), polishing and a full oral examination. (vcahospitals.com)
- Dental x-rays, if available, aid in selection of teeth to be pulled and to aid in evaluation of periodontal and other oral diseases. (vcahospitals.com)
- The platform, developed by King's College London and the University of Surrey, with partners from Royal Surrey NHS Foundation Trust, and Oral Health Foundation, allows an AI model to recognise abnormalities in anatomical structures. (kcl.ac.uk)
- The supernumerary teeth were diagnosed by periapical radiograph and computed tomography. (bvsalud.org)
- Tooth discoloration is caused by multiple local and systemic conditions. (medscape.com)
- Dental treatment of tooth discoloration involves identifying the etiology and implementing therapy. (medscape.com)
- By this point in the 21st century, the treatment of tooth discoloration has evolved into an annual multibillion-dollar, highly sophisticated, scientific, and clinical discipline. (medscape.com)
- Changes in dietary and toothbrushing habits and professional cleaning and treatment may help in preventing tooth discoloration (see Medical Care). (medscape.com)
- Educate patients who are treated for medical disorders associated with dental discoloration about the risks of tooth-related disorders. (medscape.com)
- Supranoto SC, Slot DE, Addy M, Van der Weijden GA. The effect of chlorhexidine dentifrice or gel versus chlorhexidine mouthwash on plaque, gingivitis, bleeding and tooth discoloration: a systematic review. (medscape.com)
- Each tooth has roots in the alveolar bone of the maxilla or mandible with a visible crown that emerges from the gingiva. (bpac.org.nz)
- If cementum is lost the tooth root may become fused to or resorbed by the alveolar bone. (bpac.org.nz)
- Permanent teeth develop behind the primary teeth in the alveolar bone. (bpac.org.nz)
- The crown of the tooth should not be excessively covered with gingiva. (bpac.org.nz)
- Abnormalities to look for include swelling, redness, bleeding or recession of the gingiva, change in tooth position, premature tooth mobility or tooth loss and heavy plaque or calculus deposits, which are often seen on the outer surface of the incisors and the inner surface of the molars. (bpac.org.nz)
- With progressive bone loss, teeth may loosen, and gingiva recedes. (msdmanuals.com)
- People born with Apert syndrome may experience problems with their vision and teeth because of the abnormal shape of the facial and skull bones. (medicalnewstoday.com)
- Abnormal teeth development sometimes indicates a systemic health problem e.g. hypothyroidism. (bpac.org.nz)
- When teeth angles clash instead of aligning smoothly, the abnormal grinding produces clicking, popping noises from the friction. (cdhp.org)
- The treatment adopted was surgical removal of the supernumerary teeth and esthetic restoration to transform the permanent mandibular canines into lateral incisors. (bvsalud.org)
- It usually manifests as a worsening of gingivitis and then, if untreated, with loosening and loss of teeth. (msdmanuals.com)
- To formally diagnose a person with Apert syndrome, a doctor will look for the characteristic bone abnormalities affecting the head, face, hands, and feet. (medicalnewstoday.com)
- Characteristic features include neurobehavioural abnormalities such as aggressive and self-injurious behaviour and significant sleep disturbances. (bmj.com)
- This paper reports the case of an 11-year-old patient with absence of the permanent maxillary lateral incisors and the mandibular second premolars, with concomitant presence of a supernumerary tooth in the region of the right mandibular lateral incisor. (bvsalud.org)
- Mesiodens are supernumerary teeth, commonly seen in the maxillary midline. (bvsalud.org)
- The prevalence of supernumerary teeth varies oscila entre el 0,3 y el 3,8%.1 Es clasificado como una ano- from 0.3 to 3.8%.1 It is defined as a number malía de número, caracterizada por la presencia de una o abnormality characterized by the excess of any más piezas dentarias en exceso con respecto a la cantidad tooth. (bvsalud.org)
- Hay tres teorías que tratan the etiology of supernumerary teeth has not de explicar esta anomalía dental: dicotomía del germen been defined, but three theories try to explain this dental anomaly. (bvsalud.org)
- Cursory familiarity with basic dental anatomy and calcification and with the eruption sequence of teeth is helpful before physical examination. (medscape.com)
- As the child grows, twenty primary (deciduous) teeth form, erupt and shed and are replaced by 32 permanent teeth. (bpac.org.nz)
- Moreover, behavioral abnormalities such as stereotypic hand movements, teeth grinding, reduced eye contact, self-harm or aggressivity and autistic features are common. (orpha.net)
- A pilot study was done with patients with cardiovascular disease (CVD) and it shows increased incidence of pulp stones in teeth with patients with CVD compared to healthy patients without CVD. (wikipedia.org)
- These include orthopedic, cardiovascular, and endocrine abnormalities. (expresshealthcaremgmt.com)
- The tooth was extracted uneventfully under local anesthesia. (cdc.gov)
- If a child loses primary teeth before the age of four years, has asymmetrical primary or permanent tooth eruption, or eruption is delayed by more than six months after expected, they should be referred to a dentist or paediatrician. (bpac.org.nz)
- He wrote, "My tooth is still hurting, and my dentist can't find out why. (drbicuspid.com)
- A dentist is more than a professional tooth cleaner. (themomblogs.com)
- Since a cat's dental health can deteriorate throughout its life, you should check the condition of its teeth regularly. (thedogman.net)
- As the permanent tooth grows towards the surface, it resorbs the root of the primary tooth, causing it to loosen and fall out. (bpac.org.nz)
- It involves cleaning the surface of each tooth and scaling below the gumline, where food, bacteria, and tartar build up. (vcahospitals.com)
- Jaw misalignment or growth abnormalities in children can also lead to a bad bite and noisy symptoms. (cdhp.org)
- Apert syndrome can also cause abnormalities in the fingers and toes. (medicalnewstoday.com)
- Apert syndrome is a birth abnormality caused by a mutation of the FGFR2 gene. (medicalnewstoday.com)
- Antenatal screening using ultrasonography can also detect the syndrome in infants with skeletal or cardiac abnormalities. (expresshealthcaremgmt.com)
- Il s'agit de la première série de cas du syndrome de Sanjad-Sakati confirmés génétiquement en Jordanie. (who.int)
- Pulp stones (also denticles or endoliths) are nodular, calcified masses appearing in either or both the coronal and root portion of the pulp organ in teeth. (wikipedia.org)
- Clinically, a tooth with a pulp stone has normal appearance like any other tooth. (wikipedia.org)
- The number of pulp stones in a single tooth may vary from 1 to 12 or more, with varying sizes from minute particles to large masses which tend to occlude the pulpal space. (wikipedia.org)
- Dentine forms the structure of the tooth and is produced by the dental pulp which is a specialised tissue responsible for the neurosensory function and reparative potential of teeth. (bpac.org.nz)
- Telltale signs are excessive tooth wear, jaw pain, and mouth guard indentations. (cdhp.org)
- In case of abnormalities (for example purulent discharge, or redness) you should consult a veterinarian. (thedogman.net)
- An artificial intelligence (AI) platform is allowing dentists and dental students to read radiograms (X-rays) with higher accuracy, helping them to better detect tooth decay and gum diseases. (kcl.ac.uk)
- Cuando la región afectada está ubicada en la línea the two maxillary central incisors is termed media del paladar entre los dos incisivos centrales superio- mesiodens. (bvsalud.org)
- These findings contradict earlier claims that hobbits possessed teeth entirely like those of modern humans. (scientificamerican.com)
- 4-6 The sleep abnormalities include daytime sleepiness, difficulty falling asleep at night, nocturnal awakening, decreased sleep time, and abnormalities in the percentage of rapid eye movement (REM) sleep. (bmj.com)
- Examination showed a root-filled lower right canine tooth that was mobile and tender to percussion. (cdc.gov)
- Rabbits express a wide array of vocalizations but aggressive growling (low, guttural sound) and teeth grinding tend to be worrisome. (oxbowanimalhealth.com)