Dental OSCE (Objective Structured Clinical Examination) Practice Exam

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What is the appearance of a cementoblastoma on a radiographic examination?

Radiopaque mass attached to a root
Well-defined radiolucency
Moth-eaten radiographic pattern
Multilocular radiolucency

The correct answer is: Radiopaque mass attached to a root

A cementoblastoma appears as a radiopaque mass attached to the root of a tooth on a radiographic examination. This characteristic appearance is due to the accumulation of cementum, which is a hard tissue that forms the outer layer of the tooth's root. The radiopacity indicates that the cementoblastoma is denser than the surrounding bone and dental structures, making it visible as a bright area on the radiograph. In distinguishing features, a cementoblastoma often has a well-defined border and is typically associated with the roots of mandibular molars. This can be critical in differentiating it from other lesions that may appear radiolucent, such as certain odontogenic cysts or tumors. Understanding these characteristics helps in accurate diagnosis and treatment planning in dental practice.