• epithelial
  • BMP-SHH signaling network controls epithelial stem cell fate via regulation of its niche in the developing tooth. (usc.edu)
  • characterized by gingivitis, destruction of the alveolar bone and periodontal ligament, apical migration of the epithelial attachment resulting in the formation of periodontal pockets, and ultimately loosening and exfoliation of the teeth (loss of teeth). (healthfree.com)
  • Differentiation
  • By regulating ECM integrity and composition matrix metalloproteinases (MMPs) play the main role in ECM molecules signaling and influence processes such as proliferation, migration, differentiation and apoptosis. (intechopen.com)
  • By regulating ECM structure and composition, MMPs are involved in growth factor availability and are playing the main role in the function of cell surface signaling systems and in that way influence proliferation, migration, differentiation and apoptosis [ 5 ]. (intechopen.com)
  • bone
  • This ridge reconstruction technique enabled preserving both hard and soft tissues and counteracting vertical and horizontal bone resorption after tooth extraction and allowed for an ideal three-dimensional implant placement. (hindawi.com)
  • After the extraction of a severely compromised tooth in the anterior maxilla, a local reduction of the vertical and horizontal dimensions of the alveolar ridge may occur, leaving the patient with insufficient bone to allow implant placement [ 6 - 8 ]. (hindawi.com)
  • Facial ectomesenchyme of the pharyngeal arches forming skeletal muscle, bone, and cartilage in the face. (wikipedia.org)
  • Up to 50% by volume and 70% by weight of human bone is a modified form of hydroxylapatite, known as bone mineral. (wikipedia.org)
  • bones
  • They migrate extensively throughout the embryo and form most of the head and peripheral nervous system, giving rise to sensory and sympathetic ganglia, heart regions, glia, head bones, teeth, muscle cells, sensory organs, melanocytes and other cell types. (csun.edu)
  • jaws
  • When Weyrich samples tartar from teeth, she's careful to pick jaws that have more than one tooth and to always leave some tartar behind. (theatlantic.com)
  • In general, the chain catshark is found in waters with a temperature between 8.5 °C (47 °F) and 14 °C (57 °F). Jaws Upper teeth Lower teeth The catshark spends the daytime resting at the bottom, usually in contact with certain structures. (wikipedia.org)
  • contours
  • The aim of this study was to achieve aesthetically pleasing soft tissue contours in a severely compromised tooth in the anterior region of the maxilla. (hindawi.com)
  • dental
  • Inflammation of the dental pulp (pulpitis) generally presents with severe pain as toothache, which is commonly treated by either extracting the tooth or root canal treatment (RCT). (frontiersin.org)
  • Left further undisturbed, plaque will turn hard and yellow, calcifying on teeth as dental calculus, also known as tartar. (theatlantic.com)
  • Dental implants, unlike the natural teeth, do not possess a compact barrier against penetration properties of the oral cavity. (pubmedcentralcanada.ca)
  • Dental morphology also supports sexual dimorphism, with highly sexually dimorphic marsupials, such as the grey kangaroo, having different tooth sizes between males and females, but both sexes having the same dental morphology. (wikipedia.org)
  • shark
  • In 2007, the bonnethead shark was found to be capable of asexual reproduction via automictic parthenogenesis, in which a female's ovum fuses with a polar body to form a zygote without the need for a male. (wikipedia.org)
  • File:Stevenson - Elementorum myologiae specimen, 1669 - 4715289.tif A shark tooth is one of the numerous teeth of a shark. (wikipedia.org)
  • A shark tooth contains resistant calcium phosphate materials. (wikipedia.org)
  • The type of tooth that a shark has depends on its diet and feeding habits. (wikipedia.org)
  • There are a number of common types of shark teeth, that vary according to the diet of the shark. (wikipedia.org)
  • This was the first common style of shark tooth, present in the plentiful cladodont teeth of the devonian, four hundred million years ago. (wikipedia.org)
  • The most famously known shark with these teeth is the Great White shark, which feeds on animals such as sea lions, dolphins, other sharks, and even small whales. (wikipedia.org)
  • The teeth of plankton-feeders, such as the basking shark and whale shark, are greatly reduced and non-functional. (wikipedia.org)
  • C. megalodon teeth are the largest of any shark, extinct or living, and are among the most sought after types of shark teeth in the world. (wikipedia.org)
  • Fossilized teeth from the copper shark have been recovered from the Pungo River in North Carolina, dating to the Miocene (23-5.3 Ma), from Tuscany, dating to the Pliocene (5.3-2.6 Ma), and from Costa Mesa in California, dating to the Late Pleistocene (126,000-12,000 years ago). (wikipedia.org)
  • mainly
  • L. japonica exhibits specialized predation, with prey consisting mainly of geophilomorph centipedes, a less reliable food source that also contributes to their high rate of nest migration. (wikipedia.org)
  • genus
  • Like ants of genera Amblyopone and Proceratium, the Leptanilla genus engages in larval hemolymph feeding (LHF), with the queen using no other form of sustenance. (wikipedia.org)
  • plaque
  • If your teeth don't get brushed, this plaque will harden and cause inflammation that leads to sore, bleeding gums, painful chewing problems, and even tooth loss. (healthfree.com)
  • extraction
  • For a right-maxillary central incisor with localized advanced chronic periodontitis a tooth extraction followed by reconstructive procedures and delayed implant placement was proposed and accepted by the patient. (hindawi.com)
  • In these contexts and following tooth extraction, regenerative techniques have been recommended to allow for ridge augmentation, which improves soft and hard tissue volume for the implant placement [ 11 , 12 ]. (hindawi.com)
  • In this arm 16 premolar teeth scheduled for extraction for orthodontic reasons were used.After signed consent was given by patients,local anesthesia was applied before operative procedures. (clinicaltrials.gov)
  • functionally
  • Ectodermal Smad4 and p38 MAPK are functionally redundant in mediating TGF-beta/BMP signaling during tooth and palate development. (usc.edu)
  • In conclusion, implants placed in combination with a GBR procedure can achieve long-term stable functionally and esthetically satisfying results for replacing missing teeth in cases of atrophy of the alveolar crest. (pubmedcentralcanada.ca)
  • calcium
  • Hydroxylapatite, also called hydroxyapatite (HA), is a naturally occurring mineral form of calcium apatite with the formula Ca5(PO4)3(OH), but is usually written Ca10(PO4)6(OH)2 to denote that the crystal unit cell comprises two entities. (wikipedia.org)
  • mechanisms
  • Li J, Parada C, Harunaga J, and Chai Y. (2017) Cellular and molecular mechanisms of tooth root development . (usc.edu)
  • My laboratory is studying the cellular mechanisms responsible for coordinating the migration of these cells. (csun.edu)
  • lower
  • workers grab on to this with their lower mouthparts, which are distinct from their mandibles, when transporting larvae during migration. (wikipedia.org)
  • adjacent
  • Following removal of the natural intervertebral disc, a pair of hemi-cylindrical recesses are formed along a central region of the adjacent vertebral bodies to a predetermined depth. (google.com.au)
  • found
  • Other finds are known from San Giovanni di Sinis near Oristano, where a molar tooth was found in also deposited before the Eemian sediments, as well as an additional molar from Campu Giavesu in Sassari, which is, however, significantly larger. (wikipedia.org)
  • National Geographic explains that hammerheads can be found in warm tropical waters, but during the summer, hammerheads participate in a mass migration to search for cooler waters. (wikipedia.org)
  • However, they also exhibit partial, fading serrations, which are more pronounced near the root, and disappear towards the tip of the tooth - serrations being found in Great Whites but not Extinct Giant Makos. (wikipedia.org)
  • Adult sharks tend to prefer rough bottoms, creating a difficulty for trawl sampling, while the immature forms are found near smoother regions. (wikipedia.org)
  • known
  • Of the few known molars just only one represents the rearmost tooth. (wikipedia.org)
  • They are also known to form schools during the day, sometimes in groups of over 100. (wikipedia.org)
  • The most ancient types of sharks date back to 450 million years ago, during the Late Ordovician period, and are mostly known by their fossilised teeth. (wikipedia.org)
  • Diprotodon, meaning "two forward teeth", is the largest known marsupial to have ever lived. (wikipedia.org)
  • large
  • Polynesia has confounded the traditional ways of tracing human migration-archaeology, linguistic analyses, even human DNA-because large parts of it were settled so fast. (theatlantic.com)
  • mouths
  • These sharks filter feed on prey by opening their mouths to let tiny organisms get sucked into their mouths to feed without using their teeth at all, instead filtering the food when passing water through their gills. (wikipedia.org)
  • sharks
  • Sharks with needle-like teeth commonly feed on small to medium-sized fish, sometimes including small sharks. (wikipedia.org)
  • These sharks specifically use their teeth to feed on small prey like squid, flounder, stingrays, and even hammerhead sharks. (wikipedia.org)
  • shape
  • In fact, museums traditionally cleaned the gunk from teeth-to better analyze their shape and to make them look better on display. (theatlantic.com)
  • Actin-myosin filaments form a "belt" around each cell that allows a group of cells to coordinate cell shape and shape changes. (coursehero.com)
  • Viewed from above, the front and rear of the skull were expanded, with the broad front forming a duck-bill or spoon-bill shape. (wikipedia.org)
  • Fast moving schools usually form a wedge shape, while shoals that are feeding tend to become circular. (wikipedia.org)
  • make
  • The predators are keenly focused on the shoals, acutely aware of their numbers and whereabouts, and make migrations themselves, often in schools of their own, that can span thousands of miles to connect with, or stay connected with them. (wikipedia.org)
  • anterior
  • The loss of an anterior tooth compromises the patient's aesthetics and has major detrimental implications for the subject, since it significantly affects his/her social integration and quality of life [ 1 - 3 ]. (hindawi.com)
  • However, a severely compromised tooth in the maxillary anterior region poses a great challenge to implant therapy. (hindawi.com)
  • shapes
  • The girls, in addition got tattoos: around the belly area, the flank, the back, and the face (on the temple) in the form of arrow shapes, or simple flowers. (wikipedia.org)
  • Schools that are travelling can form long thin lines, or squares or ovals or amoeboid shapes. (wikipedia.org)
  • size
  • These teeth are in extremely high demand by collectors and private investors, and they can fetch steep prices according to their size and deterioration. (wikipedia.org)
  • Evidence does exist in the form of two fossilized specimens housed at the Museum of the Rockies for an even greater maximum size of 15 m (49 ft) and weighing 9.07 metric tons (10.00 short tons) for Edmontosaurus annectens. (wikipedia.org)
  • Forage fish compensate for their small size by forming schools. (wikipedia.org)
  • Cell
  • them The cells first formed aggregates in which the two cell types were equally mixed. (coursehero.com)
  • If the neighboring cells both express a low-sialic acid form of N-CAM, strong cell adhesion is promoted. (coursehero.com)
  • If the cells contain the highly sialated forms of N-CAM, cell adhesion will be weakened or inhibited. (coursehero.com)
  • narrow
  • These teeth are especially effective for such prey because they can easily grip their slippery and narrow bodies. (wikipedia.org)
  • cells
  • Capping of the exposed pulp is indicated for reversible pulp tissue injury after physical or mechanical trauma in developing or mature teeth.The response to direct pulp capping with materials such as MTA or NEC is the formation of dentin barrier, resulting from the recruitment and proliferation of undifferentiated cells. (clinicaltrials.gov)
  • Odontoblasts (dentin-producing cells) of the teeth. (wikipedia.org)
  • schools
  • Most forage fish are pelagic fish, which means they form their schools in open water, and not on or near the bottom (demersal fish). (wikipedia.org)
  • finds
  • Because of new tooth finds since the mid-20th century, it became clear the close connection to the mammoths, which is why the name Mammuthus lamarmorae prevailed. (wikipedia.org)
  • The smaller teeth ranging from 3½" and 4½" are more common finds, while teeth over 5", 6", and 7" are more rare. (wikipedia.org)