Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Tooth> ?p ?o }
- Tooth abstract "A tooth (plural teeth) is a small, calcified, whitish structure found in the jaws (or mouths) of many vertebrates and used to break down food. Some animals, particularly carnivores, also use teeth for hunting or for defensive purposes. The roots of teeth are covered by gums. Teeth are not made of bone, but rather of multiple tissues of varying density and hardness. The cellular tissues that ultimately become teeth originate from the embryonic germ layer, the ectoderm.The general structure of teeth is similar across the vertebrates, although there is considerable variation in their form and position. The teeth of mammals have deep roots, and this pattern is also found in some fish, and in crocodilians. In most teleost fish, however, the teeth are attached to the outer surface of the bone, while in lizards they are attached to the inner surface of the jaw by one side. In cartilaginous fish, such as sharks, the teeth are attached by tough ligaments to the hoops of cartilage that form the jaw.Some animals develop only one set of teeth (monophyodont) while others develop many sets (polyphyodont). Sharks, for example, grow a new set of teeth every two weeks to replace worn teeth. Rodent incisors grow and wear away continually through gnawing, which helps maintain relatively constant length. The industry of the beaver is due in part to this qualification. Many rodents such as voles (but not mice) and guinea pigs, as well as leporidae like rabbits, have continuously growing molars in addition to incisors.Teeth are not always attached to the jaw, as they are in mammals. In many reptiles and fish, teeth are attached to the palate or to the floor of the mouth, forming additional rows inside those on the jaws proper. Some teleosts even have teeth in the pharynx. While not true teeth in the usual sense, the denticles of sharks are almost identical in structure, and are likely to have the same evolutionary origin. Indeed, teeth appear to have first evolved in sharks, and are not found in the more primitive jawless fish - while lampreys do have tooth-like structures on the tongue, these are in fact, composed of keratin, not of dentine or enamel, and bear no relationship to true teeth. Though "modern" teeth-like structures with dentine and enamel have been found in late conodonts, they are now supposed to have evolved independently of later vertebrates' teeth. Living amphibians typically have small teeth, or none at all, since they commonly feed only on soft foods. In reptiles, teeth are generally simple and conical in shape, although there is some variation between species, most notably the venom-injecting fangs of snakes. The pattern of incisors, canines, premolars and molars is found only in mammals, and to varying extents, in their evolutionary ancestors. The numbers of these types of teeth varies greatly between species; zoologists use a standardised dental formula to describe the precise pattern in any given group.".
- Tooth thumbnail Close_up_-_chimpanzee_teeth.png?width=300.
- Tooth wikiPageID "25631460".
- Tooth wikiPageLength "26175".
- Tooth wikiPageOutDegree "175".
- Tooth wikiPageRevisionID "678442496".
- Tooth wikiPageWikiLink Aardvark.
- Tooth wikiPageWikiLink Agnatha.
- Tooth wikiPageWikiLink Alga.
- Tooth wikiPageWikiLink Algae.
- Tooth wikiPageWikiLink Ameloblast.
- Tooth wikiPageWikiLink Ameloblasts.
- Tooth wikiPageWikiLink Amphibian.
- Tooth wikiPageWikiLink Anaesthetic.
- Tooth wikiPageWikiLink Analogy_(biology).
- Tooth wikiPageWikiLink Anatomical_terms_of_location.
- Tooth wikiPageWikiLink Ancylostomatidae.
- Tooth wikiPageWikiLink Anesthetic.
- Tooth wikiPageWikiLink Animal.
- Tooth wikiPageWikiLink Animal_tooth_development.
- Tooth wikiPageWikiLink Anticoagulant.
- Tooth wikiPageWikiLink Aquatic_animal.
- Tooth wikiPageWikiLink Beaked_whale.
- Tooth wikiPageWikiLink Beaked_whales.
- Tooth wikiPageWikiLink Beaver.
- Tooth wikiPageWikiLink Bit_(horse).
- Tooth wikiPageWikiLink Bivalvia.
- Tooth wikiPageWikiLink Bryozoa.
- Tooth wikiPageWikiLink Calcification.
- Tooth wikiPageWikiLink Cambrian.
- Tooth wikiPageWikiLink Canine_(tooth).
- Tooth wikiPageWikiLink Canine_teeth.
- Tooth wikiPageWikiLink Canine_tooth.
- Tooth wikiPageWikiLink Carnivore.
- Tooth wikiPageWikiLink Cartilage.
- Tooth wikiPageWikiLink Cartilaginous_fish.
- Tooth wikiPageWikiLink Category:Animal_anatomy.
- Tooth wikiPageWikiLink Category:Articles_with_inconsistent_citation_formats.
- Tooth wikiPageWikiLink Category:Teeth.
- Tooth wikiPageWikiLink Cetacea.
- Tooth wikiPageWikiLink Cetacean.
- Tooth wikiPageWikiLink Cheek.
- Tooth wikiPageWikiLink Chitin.
- Tooth wikiPageWikiLink Chondrichthyes.
- Tooth wikiPageWikiLink Cone_snail.
- Tooth wikiPageWikiLink Conidae.
- Tooth wikiPageWikiLink Conodont.
- Tooth wikiPageWikiLink Conodonts.
- Tooth wikiPageWikiLink Convergent_evolution.
- Tooth wikiPageWikiLink Cribbing_(horse).
- Tooth wikiPageWikiLink Crocodilia.
- Tooth wikiPageWikiLink Crocodilian.
- Tooth wikiPageWikiLink Crocodilians.
- Tooth wikiPageWikiLink Deciduous_teeth.
- Tooth wikiPageWikiLink Dental_caries.
- Tooth wikiPageWikiLink Dental_formula.
- Tooth wikiPageWikiLink Dental_papilla.
- Tooth wikiPageWikiLink Denticle.
- Tooth wikiPageWikiLink Dentin.
- Tooth wikiPageWikiLink Dentine.
- Tooth wikiPageWikiLink Dentition.
- Tooth wikiPageWikiLink Diastema.
- Tooth wikiPageWikiLink Diastema_(dentistry).
- Tooth wikiPageWikiLink Diatom.
- Tooth wikiPageWikiLink Diphyodont.
- Tooth wikiPageWikiLink Dog.
- Tooth wikiPageWikiLink Dolphin.
- Tooth wikiPageWikiLink Earthworm.
- Tooth wikiPageWikiLink Earthworms.
- Tooth wikiPageWikiLink Ectoderm.
- Tooth wikiPageWikiLink Elephant.
- Tooth wikiPageWikiLink Esophagus.
- Tooth wikiPageWikiLink European_medicinal_leech.
- Tooth wikiPageWikiLink Fang.
- Tooth wikiPageWikiLink Fish.
- Tooth wikiPageWikiLink Fish_scale.
- Tooth wikiPageWikiLink Fodder.
- Tooth wikiPageWikiLink Food.
- Tooth wikiPageWikiLink Fossil.
- Tooth wikiPageWikiLink Gastropoda.
- Tooth wikiPageWikiLink Gastropods.
- Tooth wikiPageWikiLink Genome.
- Tooth wikiPageWikiLink Ghost_slug.
- Tooth wikiPageWikiLink Gingiva.
- Tooth wikiPageWikiLink Gizzard.
- Tooth wikiPageWikiLink Gnawing.
- Tooth wikiPageWikiLink Guinea_pig.
- Tooth wikiPageWikiLink Herbivore.
- Tooth wikiPageWikiLink Hirudin.
- Tooth wikiPageWikiLink Hirudo_medicinalis.
- Tooth wikiPageWikiLink Homologous_gene.
- Tooth wikiPageWikiLink Homology_(biology).
- Tooth wikiPageWikiLink Horse.
- Tooth wikiPageWikiLink Horse_teeth.
- Tooth wikiPageWikiLink Human.
- Tooth wikiPageWikiLink Human_mandible.
- Tooth wikiPageWikiLink Human_teeth.
- Tooth wikiPageWikiLink Human_tooth.
- Tooth wikiPageWikiLink Human_tooth_development.
- Tooth wikiPageWikiLink Humans.