Advanced Dental Admission Test (ADAT)

What is concrescence in dentistry?

1. Fusion of two teeth by dentin

2. Joining of two teeth by fusion of enamel

3. Joining of the roots of two teeth by fusion of cementum

4. Two crowns forming one root

The correct answer is: Joining of the roots of two teeth by fusion of cementum

Concrescence refers specifically to the phenomenon where two adjacent teeth are joined at their roots through the fusion of cementum. This is a dental anomaly that occurs when the roots of two different teeth grow together, leading to a connection that can affect their movement and stability. Cementum is the specialized hard tissue that covers the roots of teeth, and its fusion is what defines concrescence. This condition can often be confused with other types of tooth fusion, such as anodontia or gemination, which involve different structures and mechanisms. The focus on the fusion involving the cementum in concrescence is crucial because it distinguishes this condition from other forms like those involving enamel or dentin fusion, which would not fit the definition of concrescence. Understanding this term is important in clinical dentistry, particularly in cases of orthodontic treatment or surgical intervention, where the identification of the type of tooth connection may influence the approach taken by the dental professional.