WordNet
- (dentistry) malocclusion in which the upper teeth extend abnormally far over the lower teeth
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2017/11/20 01:55:54」(JST)
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For other uses, see Overbite (disambiguation).
Overbite |
Classification and external resources |
Specialty |
orthodontics |
ICD-10 |
K07.2 |
ICD-9-CM |
524.29 |
MeSH |
D057887 |
[edit on Wikidata]
|
Overjet or horizontal overlap.
Overbite medically refers to the extent of vertical (superior-inferior) overlap of the maxillary central incisors over the mandibular central incisors,[1] measured relative to the incisal ridges.[2]
The term overbite does not refer to a specific condition, nor is it a form of malocclusion. Rather an absent or excess overbite would be a malocclusion. Normal overbite is not measured in exact terms, but as a proportion (approximately 30–50% of the height of the mandibular incisors) and is commonly expressed as a percentage.
Other terms confused with "overbite"
Overbite is often confused with overjet, which is the distance between the maxillary anterior teeth and the mandibular anterior teeth in the anterior-posterior axis.
"Overbite" may also be used commonly to refer to Class II malocclusion or retrognathia, though this usage can be considered incorrect. This is where the mesiobuccal cusp of the maxillary first molar is situated anterior to the buccal groove of the mandibular first molar; in other words, the mandible (lower jaw) appears too far behind the maxilla. A person presenting with Class II malocclusion may exhibit excessive overbite as well, or may have the opposite problem, which is referred to as openbite (or apertognathia). In the case of apertognathia, the teeth do not overlap enough or at all. The upper teeth protrude past the lower teeth.
Changing human dentition
American anthropologist C. Loring Brace has brought forth a theory that the human overbite of Europeans is only about 50 years old and was the result of the widespread adoption of the table knife and fork. Before the use of cutlery, Europeans would often clamp their teeth on a piece of meat and cut off a piece with a knife. When Europeans started using forks and knives, the cutting was done on the plate and the overbite became much more common. Brace also researched the Chinese, who had adopted chopsticks 900 years earlier and found the instances of overbites increased about the same time the new eating method was introduced.[3]
References
- ^ Okeson, J.P. (2008) Management of Temporomandibular Disorders and Occlusion. Sixth Edition.
- ^ "Overbite" at Dorland's Medical Dictionary
- ^ Twilley, Nicola. "Freedom from food". Aeon Media Ltd. Retrieved 2014-10-06.
Dental disease involving the jaw (K07–K10, 524–526)
|
General |
- Jaw abnormality
- malocclusion
- Orthodontics
- Gnathitis
|
Size |
-
- Micrognathism
- Maxillary hypoplasia
|
Maxilla and Mandible |
- Cherubism
- Congenital epulis
- Torus mandibularis
- Torus palatinus
|
Other |
- Jaw and base of cranium
- Prognathism
- Retrognathism
- Dental arch
- Temporomandibular joint disorder
|
UpToDate Contents
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English Journal
- Prevalence of TMD symptoms in Turkish migrants and re-settlers from the former Soviet Union in comparison to a German group.
- Diercke K1, Zimmermann H2, Hellmann D3, Kim TS4, Fricke J5, El Sayed N6, Hagenfeld D6, Kühnisch J7, Schmitter M3, Becher H8.
- Cranio : the journal of craniomandibular practice.Cranio.2016 Sep;34(5):316-22. doi: 10.1179/2151090315Y.0000000011. Epub 2016 Apr 22.
- OBJECTIVES: The objective of this study was to investigate the prevalence of temporomandibular disorder (TMD) symptoms among Turks and re-settlers with German origin from Russia and to compare those findings with a German group from the same area.METHOD: Sixty-nine Turkish migrants, 50 re-settlers,
- PMID 26323496
- Orthodontic correction of overjet/overbite ('parrot mouth') in 73 foals (1999-2013).
- Easley J1, Dixon PM2, Reardon RJ2.
- Equine veterinary journal.Equine Vet J.2016 Sep;48(5):565-72. doi: 10.1111/evj.12540. Epub 2016 Jan 8.
- REASONS FOR PERFORMING STUDY: There are limited reports on the efficacy of functional orthodontic correction of overjet or overbite in foals.OBJECTIVES: To report the outcome of using orthodontic tension bands in combination with an inclined plane biteplate in the treatment of overjet, with or witho
- PMID 26582741
- Twelve-year follow-up of mandibular incisor stability: Comparison between two bonded lingual orthodontic retainers.
- Schütz-Fransson U, Lindsten R, Bjerklin K, Bondemark L.
- The Angle orthodontist.Angle Orthod.2016 Aug 23. [Epub ahead of print]
- OBJECTIVE: To compare the long-term outcome 9 years after removal of two different types of fixed retainers used for stabilization of the mandibular anterior segment.MATERIALS AND METHODS: Sixty-four children who had undergone orthodontic treatment with fixed appliances in both arches were divided i
- PMID 27552722
Japanese Journal
- 臨床報告 歯科矯正用アンカースクリューを用いて治療を行ったAngleⅡ級非抜歯症例の臨床検討
- 限局型中等度慢性歯周炎に対して歯周組織再生療法を施行した症例
- Effect of Headgear and Class Ⅱ Traction on Upper Airway Dimensions and Hyoid Bone Position in Non-Extraction Patients with Class Ⅱ Division 1 Malocclusion
★リンクテーブル★
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- 英
- overbite
- 関
- 垂直被蓋