Abstract
Congenitally missing teeth are the most commonly seen dental anomalies. Agenesis of the permanent first molar has the least frequency of all the tooth types, and it usually occurs in association with oligodontia or anodontia. Thus, agenesis of the bilateral maxillary first permanent molar is an extremely rare occurrence, and no such case has been reported in ethnic Saudi Arabian population. We hereby report a case of nonsyndromic bilateral congenitally missing maxillary first permanent molar in an eight-year-old Saudi female patient. Comprehensive oral rehabilitation was done for the patient. The implications of the tooth agenesis are also discussed. The prognosis of this case is presented.
Highlights
Hypodontia is the term used to describe the developmental absence of one or more primary or permanent teeth, excluding the third molars
Missing teeth are common in patients with cleft lip and palate, ectodermal dysplasia, Down syndrome, and so forth [4]; it is a rare finding in a nonsyndromic healthy patient without the absence of the other teeth
Several hypotheses [5, 6] have been proposed to explain the etiology of the congenitally missing teeth like Butler’s field theory, Svinhufvud’s anatomic model, and Kjaer’s neuroosteological developmental fields in the jaws. All these theories concluded that the permanent first molars are the most stable teeth in the jaw and have the least likelihood of being absent, except in those patients whose complete molar tooth series are absent, as seen in severe oligodontia or anodontia
Summary
Hypodontia is the term used to describe the developmental absence of one or more primary or permanent teeth, excluding the third molars. Several hypotheses [5, 6] have been proposed to explain the etiology of the congenitally missing teeth like Butler’s field theory, Svinhufvud’s anatomic model, and Kjaer’s neuroosteological developmental fields in the jaws. All these theories concluded that the permanent first molars are the most stable teeth in the jaw and have the least likelihood of being absent, except in those patients whose complete molar tooth series are absent, as seen in severe oligodontia or anodontia
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