RESUMO
Developmental dental disorders may be due to abnormalities in the differentiation of the dental lamina and the tooth germ (anomalies in number size and shape) or to abnormalities in the formation of dental hard tissue (anomalies in structure). The terms “double tooth”, “double formation”, and “joined tooth” or “fused teeth” are often used to describe gemination and fusion, both of which are primary developmental abnormalities of teeth. According to current definitions, gemination occurs when one tooth bud tries to divide, while fusion occurs if two buds unite. Clinical experience shows, however that diagnosis can be complicated due to super imposed anomalies. This report describes a unique case of geminated primary incisors, the potential difficulty in classifying the anomaly and the ways of differentiating gemination from fusion as well as esthetic rehabiliation of the anomaly are discussed.
RESUMO
The talon cusp or dens evaginatus of anterior teeth is a relatively rare dental developmental anomaly characterized by the presence of an accessory cusp like structure projecting from the cingulum area or cementoenamel junction. It commonly occurs in either maxilla or mandibular anterior teeth in both the primary and permanent dentition .This article reports three cases of talon cusp and its management.
RESUMO
Ectodermal dysplasia consists of clinically and genetically heterogeneous groups of disorders characterized by absence of or incomplete or delayed development of one or more of the appendages derived from epidermal tissue (hair, sweat gland, teeth, skin, and nails) or of oral ectodermal origin during embryogenesis. A case of a seven year-old child with full blown condition of ectodermal dysplasia is presented. Common dental, oral, and physical conditions were taken into consideration. Clinical management consisted of an overdenture to improve psychological development and to promote better functioning of the stomatognathic system.