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Anodontia

**Anodontia**
*Classification & external resources*
ICD-10	K00.0
ICD-9	520.0

In dentistry, anodontia, also called anodontia vera, is a rare genetic disorder characterized by the congenital absence of all primary or permanent teeth. It is associated with the group of skin and nerve syndromes called the ectodermal dysplasias. Anodontia is usually part of a syndrome and seldom occurs as an isolated entity.

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Partial anodontia, known as hypodontia or oligodontia, is the congenital absence of one or more teeth. Congenital absence of all wisdom teeth, or third molars, is relatively common.

v • d • e Oral Pathology: Oral pathology (K00-K14, 520-529)
Developmental Anomalies	Anodontia/Hypodontia - Hyperdontia - abnormalities of size and form of teeth (Concrescence, Fusion, Gemination, Dens evaginatus/Talon cusp, Dens invaginatus, Enamel pearl, Macrodontia, Microdontia, Taurodontism) - disturbances in tooth formation (Dilaceration, Regional odontodysplasia, Turner's hypoplasia) - other hereditary disturbances in tooth structure (Amelogenesis imperfecta, Dentinogenesis imperfecta, Dentin dysplasia)
Hard, Soft and Periapical Tissues	Attrition - Abrasion - Ankylosis - Dental caries - Denticles - Erosion - External resorption - Fluorosis - Gingivitis - Impaction - Internal resorption - Periodontitis - Pulpitis - Ulcer
Dentofacial Anomalies	Malocclusion - Micrognathism - Prognathism - Retrognathism - Temporomandibular joint disorder
Maxillomandibular anomalies	Odontogenic keratocyst - Torus mandibularis - Torus palatinus - Cherubism - Ameloblastoma
Salivary glands	Drooling - Benign lymphoepithelial lesion - Necrotizing sialometaplasia - Ranula - Sialadenitis - Sialolithiasis - Stomatitis - Xerostomia - Aphthous ulcer
Lip and Oral mucosa	Angular cheilitis - Erythroplakia - Hairy leukoplakia - Leukoplakia
Tongue	Geographic tongue - Fissured tongue - Glossitis - Glossodynia - Black hairy tongue