Which statement defines hypodontics?

Which statement defines hypodontics?

• A. The presence of supernumerary teeth
• B. Tooth shape anomaly
• C. Numerical reduction of the teeth on the dental arch
• D. Occlusion anomaly

Answer: (C)

Hypodontia means there are fewer teeth than normal in a dental arch due to congenital absence. This is a numerical issue—the tooth count is reduced—rather than a problem with tooth shape or with how teeth contact each other. So describing it as a numerical reduction of teeth on the arch best captures what hypodontia is. By contrast, having extra teeth is hyperdontia, a tooth shape anomaly refers to changes in crown morphology, and an occlusion anomaly deals with bite relationships, not the number of teeth. Hypodontia can involve one or several missing teeth; when many are missing, terms like oligodontia or anodontia may be used.

Hypodontia means there are fewer teeth than normal in a dental arch due to congenital absence. This is a numerical issue—the tooth count is reduced—rather than a problem with tooth shape or with how teeth contact each other. So describing it as a numerical reduction of teeth on the arch best captures what hypodontia is. By contrast, having extra teeth is hyperdontia, a tooth shape anomaly refers to changes in crown morphology, and an occlusion anomaly deals with bite relationships, not the number of teeth. Hypodontia can involve one or several missing teeth; when many are missing, terms like oligodontia or anodontia may be used.