Manifestações bucais em indivíduos com oligondotia e seus familiares do Hospital Universitário de Brasilia

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

Tooth agenesis is the absence of formation of deciduous and/or permanent tooth resulting from disturbances in odontogenesis. Being a clinically heterogeneous condition, it may affect various tooth combinations and be associated with other dental anomalies. Clinically, dental agenesis may be classified as hypodontia, oligodontia or anodontia, based on the number of absent teeth; and may occur as an isolated or as a family trait. Oligodontia is defined as more than six missing teeth, excluding the third molars. The aim of this study was to describe buccal manifestations in individuals with oligodontia and their family members at the Dental Anomaly Clinic of the Brasília University Hospital (HUB). All individuals underwent clinical and complementary examinations in order to determine the presence of tooth agenesis, to define its inheritance mode, and to determine the presence of other dental anomalies. In the seven families studied, individuals with dental agenesis manifested variability with regard to the number, location and symmetry of the affected teeth, both between families as well as within the same family. It was possible to suggest an autosomal dominant mode of inheritance of tooth agenesis with variable expressivity in five families. In two families, it was not possible to suggest the type of inheritance. Other dental development anomalies were observed in the families studied: deciduous tooth retention, peg-shaped teeth, taurodontia, supernumerary teeth, ectopic eruption of canines, premolar rotation, and enamel development defects. Further research is necessary to better understand the molecular base of dental agenesis in these families.

ASSUNTO(S)

tooth agenesis oligodontia dental anomalies anomalias dentárias oligodontia odontologia agenesia dentária

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