牙齿

Also known as teeth

A tooth (: teeth) is a hard, calcified structure found in the jaws (or mouths) of many vertebrates and used to break down food. Some animals, particularly carnivores and omnivores, also use teeth to help with capturing or wounding prey, tearing food, for defensive purposes, to intimidate other animals often including their own, or to carry prey or their young. The roots of teeth are covered by gums. Teeth are not made of bone, but rather of multiple tissues of varying density and hardness that originate from the outermost embryonic germ layer, the ectoderm.

AI overview

A tooth is a hard, calcified structure in the jaws of many vertebrates that primarily breaks down food, though some animals also use teeth to capture prey, tear food, or defend themselves. Teeth are made of multiple tissues of varying density rather than bone, with their roots covered by gums.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Anatomy.Name: Tooth
Anatomy.Latin: dens
Anatomy.Greek: ὀδούς (odoús)
Anatomy.Image: Close up - chimpanzee teeth.png
Anatomy.Caption: A chimpanzee displaying his teeth

via Wikipedia infobox

Research

308,051 papers

Tooth formation and eruption - lessons learnt from cleidocranial dysplasia.ReviewEuropean journal of oral sciences · 2018Kreiborg S, Jensen BLDOI: 10.1111/eos.12418
A cognitive psychological approach for tooth identification based on brain event-related potentials.ReviewJournal of oral biosciences · 2022Aoki S, Ito TDOI: 10.1016/j.job.2022.04.002
Surgical Exposure of Impacted Teeth.ReviewOral and maxillofacial surgery clinics of North America · 2020Alberto PLDOI: 10.1016/j.coms.2020.07.008
Intradental mechano-nociceptors serve as sentinels that prevent tooth damage.Cell reports · 2025Ronan EA, Gandhi AR, Uchima Koecklin KH et al.DOI: 10.1016/j.celrep.2025.116017
Tooth pattern, development, and replacement in the yellow catfish, Pelteobagrus fulvidraco.Journal of morphology · 2024Huang R, Tang L, Li R et al.DOI: 10.1002/jmor.21657
Revisiting tooth preservation in prosthodontic therapy.ReviewJournal of prosthodontics : official journal of the American College of Prosthodontists · 2011Priest GDOI: 10.1111/j.1532-849X.2010.00672.x
Abiotic tooth enamel.Nature · 2017Yeom B, Sain T, Lacevic N et al.DOI: 10.1038/nature21410
Access Cavity Preparations: Classification and Literature Review of Traditional and Minimally Invasive Endodontic Access Cavity Designs.ReviewJournal of endodontics · 2021Shabbir J, Zehra T, Najmi N et al.DOI: 10.1016/j.joen.2021.05.007

via PubMed

Wikidata facts

Image: Lower wisdom tooth.jpg

Show 8 more facts

ground level 360 degree view URL: www.zygotebody.com/#nav=0.75,126.89,58.47,0,0,0,0&sel=p:;h:;s:1059;c:-0.6;o:-0.75&layers=0,1,6250
Unicode character: 🦷
develops from: Fish scale
Commons category: Teeth
topic's main category: Category:Teeth
Commons gallery: Tooth
maintenance method: tooth brushing
topic has template: Template:Tooth navs

Sources (4)

via Wikidata · CC0

Article · 中文

牙齒存在於很多脊椎動物(鳥類除外)的頭部（或口部）內、功能用於咀嚼食物的鈣化組織。肉食性動物尤其倚賴牙齒進行獵食或搏鬥、禦敵。牙齒的構成成份不是骨骼，而是由動物體內不同密度與硬度的複雜組織組成，它的根部則由牙齦包覆、固定。来自贵州石阡大约4.39亿年前的双列黔齿鱼（Qianodus duplicis）的齿旋是迄今最古老的牙齿化石，揭秘了最早有颌类牙齿的生长结构和发育特征。一些動物牙齒裏有著更複雜的神經，比如獨角鯨，其牙齒有著上百萬神經，是目前已知道最複雜的牙齒（以神經學而論）。這允許獨角鯨牙齒具食物觸覺，以及導航、交配作用。隨著人類文明的創建，各種語言的發音已發展得多樣化。語言發音均非常依賴牙齒、舌頭和口腔的合作，應用到人類生活中的說話、歌唱。牙齒在古代被稱為“雅言”，牙齒的整潔，甚至關繫到社交活動和地位。專門為牙齒服務的醫學，稱為牙科。牙齒在生物學與解剖學上，具有相當重要的意義。

Abstract from DBpedia / Wikipedia · CC BY-SA