Maxillary Molar-Sinus Relationship — NDEB AFK MCQ
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Correct answer: D — Periapical radiograph
A periapical radiograph of the maxillary third molar region demonstrates the relationship between the root apices and the maxillary sinus floor. The maxillary sinus often extends between or around the roots of the maxillary molars (pneumatisation). If the roots project into the sinus, the risk of oroantral communication during extraction increases. CBCT provides superior three-dimensional assessment when the relationship appears close on periapical radiography.
Reference: White & Pharoah – Oral Radiology: Principles and Interpretation, 8th ed., 2019