On a maxillary molar periapical film (mouth open), a radiopaque bony projection superimposed over the molar/tuberosity region most likely represents the:

Correct answer: B. Coronoid process of the mandible

• A. The zygomatic process appears as a J/U-shaped radiopacity superior to the molar apices, not the projecting triangular shadow described.
• B. Correct. With the mouth open, the mandibular coronoid process projects upward over the maxillary molar/tuberosity region.
• C. The tuberosity is the maxillary bone itself, not a superimposed projection.
• D. The hamular process is a small hook posterior to the tuberosity, not this large projection.