HOSA Dental Terminology Practice

What forms when two teeth fuse during development?

1. A dentigerous cyst

2. A supernumerary tooth

3. A fused tooth

4. A dental abscess

The correct answer is: A fused tooth

When two teeth fuse during development, the result is known as a fused tooth. This condition occurs in the dental arch as a developmental anomaly where the crowns of two adjacent teeth unite. The fusion can happen between the enamel and dentin of the teeth before they fully erupt. Fused teeth typically exhibit a single root but can have separate pulp chambers, making them unique compared to normal tooth development. This anomaly may affect the appearance of the teeth and can impact occlusion, dental aesthetics, and potentially require specialized dental management. In contrast, a dentigerous cyst refers to a fluid-filled sac that develops around the crown of an unerupted tooth. A supernumerary tooth is an extra tooth that forms in addition to the regular set of teeth. A dental abscess is an infection that results in a collection of pus and is characterized by pain and swelling, typically not related to the fusion of teeth. Understanding these distinctions clarifies why fused tooth is the appropriate answer in this context.