Australian Dental Council (ADC) Practice Test

Question: 1 / 1390

Which teeth are most commonly missing congenitally?

Maxillary lateral incisor

Mandibular second premolars

Mandibular third molar

The most commonly missing teeth congenitally are the maxillary lateral incisors. Congenital absence of teeth, also known as hypodontia, frequently involves the maxillary lateral incisors, which can occur in isolation or as part of a broader pattern of missing teeth. This tooth's developmental position and relatively smaller size may contribute to its higher incidence of agenesis.

In contrast, while mandibular second premolars and mandibular third molars can also be missing congenitally, they do not occur with the same frequency as the maxillary lateral incisors. Additionally, the maxillary first molars are typically not absent congenitally but may be lost due to caries or other dental issues later in life rather than through congenital absence.

Thus, recognizing the prevalence of maxillary lateral incisors in cases of congenital missing teeth is crucial for understanding hypodontia's patterns and implications for dental treatment and aesthetics in affected individuals.

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Maxillary first molars

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