HOSA Dental Terminology Practice

Which term refers to the absence of teeth usually of genetic origin?

1. Fusion of teeth

2. Anodontia

3. Hyperdontia

4. Dentinogenesis imperfecta

The correct answer is: Anodontia

The term that refers to the absence of teeth, typically of genetic origin, is anodontia. Anodontia is a condition characterized by the congenital lack of one or more teeth, and it can affect both primary and permanent dentition. This condition is often due to genetic factors that inhibit the development of tooth buds, which are necessary for tooth formation. In contrast, fusion of teeth refers to a developmental anomaly where two teeth are joined together, while hyperdontia involves the presence of extra teeth beyond the normal dentition. Dentinogenesis imperfecta is a genetic disorder that affects the development of dentin, causing the teeth to be discolored or more prone to fractures, but it does not involve the absence of teeth. Therefore, anodontia specifically addresses the lack of teeth, making it the correct term in this context.