Tooth Abnormalities
| Definition: |
Congenital absence of or defects in structures of the teeth. |
| Notes: |
do not use /congen & do not coord with INFANT, NEWBORN, DISEASES; duplication of teeth = TOOTH, SUPERNUMERARY; abnorm in congen syphilis = HUTCHINSON'S TEETH see SYPHILIS, CONGENITAL; X ref ODONTOME (a form of developmental dental anomaly): do not confuse |
| Also Called: |
Odontome |
Tooth Abnormalities Categories.
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Amelogenesis Imperfecta - An autosomal dominant or X-linked disorder in which there is faulty development of the dental enamel owing to agenesis, hypoplasia, or hypocalcification of the enamel. It is marked by enamel that is very thin and friable and frequently stained in various shades of brown. (Dorland, 27th ed) |
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Anodontia - Congenital absence of the teeth; it may involve all (total anodontia) or only some of the teeth (partial anodontia, hypodontia), and both the deciduous and the permanent dentition, or only teeth of the permanent dentition. (Dorland, 27th ed) |
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Dens in Dente - Anomaly of the tooth, found chiefly in upper lateral incisors. It is characterized by invagination of the enamel at the incisal edge. |
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Dentin Dysplasia - An apparently hereditary disorder of dentin formation, marked by a normal appearance of coronal dentin associated with pulpal obliteration, faulty root formation, and a tendency for peripheral lesions without obvious cause. (From Dorland, 27th ed) |
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Dentinogenesis Imperfecta - An autosomal dominant disorder of tooth development characterized by opalescent dentin resulting in discoloration of the teeth, ranging from dusky blue to brownish. The dentin is poorly formed with an abnormally low mineral content; the pulp canal is obliterated, but the enamel is normal. The teeth usually wear down rapidly, leaving short, brown stumps. (Dorland, 27th ed) |
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Fused Teeth - Two teeth united during development by the union of their tooth germs; the teeth may be joined by the enamel of their crowns, by their root dentin, or by both. |
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Odontodysplasia - A localized arrested tooth development which appears to involve most commonly the anterior teeth, usually on one side of the midline, most often the maxillary central and lateral incisors. Roentgenographically, the teeth have a ghostlike appearance. Calcification and bits of prismatic enamel may be found in the pulp and the enamel is thin and absent in part. (Jablonski, Illustrated Dictionary of Dentistry, 1982) |
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Tooth, Supernumerary - An extra tooth, erupted or unerupted, resembling or unlike the other teeth in the group to which it belongs. Its presence may cause malposition of adjacent teeth or prevent their eruption. |
Tooth Abnormalities Definitions and Terms
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