Restorative & Materials · single question
A radiolucency is visible between teeth #3 and #4 on periapical radiograph. The MOST likely diagnosis is:
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Correct answer: D. Normal maxillary sinus anatomy
- A. A lateral periodontal cyst occurs along the lateral root surface of vital teeth; less likely in this specific location.
- B. Ameloblastoma is a locally aggressive odontogenic tumor typically seen as a multilocular lesion in the posterior mandible — not in the maxillary posterior region near #3 and #4.
- C. Periapical granuloma would be at the APEX of a non-vital tooth, not interproximally between two teeth.
- D. Correct. The maxillary sinus floor commonly appears as a radiolucency in the region adjacent to and between the maxillary posterior teeth (#3 and #4 region). This is normal anatomy and must not be mistaken for pathology.
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