WordNet

a means of enforcement; "the treaty had no teeth in it"
one of a number of uniform projections on a gear
something resembling the tooth of an animal
toothlike structure in invertebrates found in the mouth or alimentary canal or on a shell
hard bonelike structures in the jaws of vertebrates; used for biting and chewing or for attack and defense
not capable of being reversed or returned to the original condition; "permanent brain damage"
continuing or enduring without marked change in status or condition or place; "permanent secretary to the president"; "permanent address"; "literature of permanent value" (同)lasting
a blast of a horn
having teeth especially of a certain number or type; often used in combination; "saw-toothed"

PrepTutorEJDIC

『歯』 / 『歯状の物』,(くし・のこぎり・歯車・フォークなど)歯の働きをする物 / …に歯を付ける;…‘を'歯状(ぎざぎざ)にする
『永久の』不変の / 常設の,常置の / =permanent wave
…もまた,その上 / 『あまりにも』,過度に,必要以上に / 『非常に』,大変,はなはだ(very, extremely) / 《話》《相手の否定の言葉に,肯定で応じて》ところがどうして
(笛・らっぱなどの)プープー鳴る音;(笛・らっぱなどを)プープー鳴らすこと / 〈笛・らっぱなど〉‘を'鳴らす / 〈笛・らっぱなどが〉鳴る
歯のある / V字型の突起がある,ぎざぎざの

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2017/07/21 19:47:23」(JST)

wiki en

Permanent teeth or adult teeth are the second set of teeth formed in diphyodont mammals. In humans and old world simians, there are thirty-two permanent teeth, consisting of six maxillary and six mandibular molars, four maxillary and four mandibular premolars, two maxillary and two mandibular canines, four maxillary and four mandibular incisors.^[1]

Timeline

The first permanent tooth usually appears in the mouth at around six years of age, and the mouth will then be in a transition time with both primary (or deciduous dentition) teeth and permanent teeth during the mixed dentition period until the last primary tooth is lost or shed.^[2]

The first of the permanent teeth to erupt are the permanent first molars, right behind the last 'milk' molars of the primary dentition. These first permanent molars are important for the correct development of a permanent dentition. Up to the age of thirteen years, twenty-eight of the thirty-two permanent teeth will appear.

The full permanent dentition is completed much later during the permanent dentition period.^[3] The four last permanent teeth, the third molars, usually appear between the ages of 17 and 25 years; they are considered wisdom teeth.^[4]

Pathology

It is possible to have extra, or "supernumerary," teeth. This phenomenon is called hyperdontia and is often erroneously referred to as "a third set of teeth." These teeth may erupt into the mouth or remain impacted in the bone. Hyperdontia is often associated with syndromes such as cleft lip and palate, trichorhinophalangeal syndrome, cleidocranial dysplasia, and Gardner's syndrome.^[5]

References

^ "Tooth eruption: The permanent teeth". American Dental Association. Archived from the original (PDF) on July 15, 2016.
^ "Permanent tooth eruption chart". American Dental Association.
^ lllustrated Dental Embryology, Histology, and Anatomy, Bath-Balogh and Fehrenbach. Elsevier. 2011. pp. 191–192.
^ "Tooth eruption: The permanent teeth" (PDF). American Dental Association. Archived from the original (PDF) on June 27, 2012.
^ Jordan, Joseph A. Regezi & James J. Sciubba; Richard C. K. (2003). Oral pathology : clinical pathologic correlations (4th ed.). St. Louis: Saunders. ISBN 978-0721698052.

Ash, Major M. and Stanley J. Nelson, 2003. Wheeler’s Dental Anatomy, Physiology, and Occlusion. 8th edition.

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

Permanent dentition - Adult teeth chart Morphology permanent teeth.

UpToDate Contents

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1. 歯の解剖学的構造および発達 anatomy and development of the teeth
2. 小児における歯の損傷の評価およびマネージメント evaluation and management of dental injuries in children
3. 歯の発達障害 developmental defects of the teeth
4. 歯性感染症の疫学、病因、および臨床症状 epidemiology pathogenesis and clinical manifestations of odontogenic infections
5. シャルコーマリートゥース病などの一次性の遺伝性運動感覚性ニューロパチー hereditary primary motor sensory neuropathies including charcot marie tooth disease

English Journal

Tridimensional finite element analysis of teeth movement induced by different headgear forces.

Maruo IT1, Maruo H2, Saga AY1, de Oliveira DD3, Argenta MA4, Tanaka OM5,6.
Progress in orthodontics.Prog Orthod.2016 Dec;17(1):18. doi: 10.1186/s40510-016-0130-4. Epub 2016 Jun 6.
BACKGROUND: This study aimed to simulate the actions of low-pull (LP), high-pull (HP), and combined pull (CP) headgears (HGs) and to analyze tooth movement tendencies through finite element analysis.METHODS: Tomographic slices of a human maxilla with complete permanent dentition were processed by re
PMID 27264500

De novo EDA mutations: Variable expression in two Egyptian families.

Gaczkowska A1, Abdalla EM2, Dowidar KM3, Elhady GM4, Jagodzinski PP1, Mostowska A5.
Archives of oral biology.Arch Oral Biol.2016 Aug;68:21-8. doi: 10.1016/j.archoralbio.2016.03.015. Epub 2016 Mar 30.
OBJECTIVE: Mutations in the EDA gene, encoding the epithelial morphogen ectodysplasin-A, can result in different but overlapping phenotypes. Therefore the aim of the study was to search for etiological variations of EDA and other candidate genes in two unrelated Egyptian male children with sporadic
PMID 27054699

Effectiveness of decoronation technique in the treatment of ankylosis: A systematic review.

Mohadeb JV1,2, Somar M3, He H1,2.
Dental traumatology : official publication of International Association for Dental Traumatology.Dent Traumatol.2016 Aug;32(4):255-63. doi: 10.1111/edt.12247. Epub 2015 Dec 10.
BACKGROUND: Dentoalveolar ankylosis in growing patients is complex leading to continuing root replacement resorption, tooth infra-position, or may even affect the development of alveolar ridge and adjacent teeth. While extraction of ankylosed teeth might be associated with bone loss, decoronation of
PMID 26663218

Japanese Journal

歯根の骨置換性吸収により歯の移動が困難であった1例

奥野瑛,三上俊成,武田泰典,田中光郎
岩手医科大学歯学雑誌 38(3), 117-123, 2014-01-28
患児は6歳7か月の男児で, X線所見で上顎正中部に逆生の埋伏過剰歯を発見され近歯科医院より紹介来院し,当科にて上顎正中埋伏過剰歯の抜去を行った.同患者は, 2年半後,近医において,上顎右側中切歯と上顎右側側切歯の萌出遅延と診断されたため,その治療目的で,本院に再度受診した.側切歯は犬歯の圧迫により高度に歯根吸収を生じていた.そのため,中切歯をリンガルアーチならびにマルチブラケット装置による牽引を試 …
NAID 110009767214

外傷を受けた歯に見られる所見と経過

宮新美智世
日本補綴歯科学会誌 6(2), 125-132, 2014
　外傷の特徴は，歯周組織や歯の硬組織，歯髄など多様な組織を同時に損傷する点にある．　数か国による最近の統計では12歳の小児のうち15–23％が永久歯の外傷を経験していると報告されている．歯の外傷後の臨床経過についての長期的観察研究や，歯の外傷学に関わる多様な実験的研究に基づいて，受傷歯の治療ガイドラインの改訂が続けられている．歯の外傷に独特な合併症は，循環障害や亀裂（不完全破折），歯髄腔狭窄，歯根 …
NAID 130004544682

Related Pictures

★リンクテーブル★

リンク元	「dens permanens」「secondary teeth」
関連記事	「permanent」「too」「tooth」

「dens permanens」

Adult teeth
	Adult mouth showing full set of permanent teeth
Details
Identifiers
Latin	dentes permanentes
TA	A05.1.03.077
FMA	75152
	Anatomical terminology [edit on Wikidata]