Violation

Which of the following landmarks may be identified on periapical radiographs of the mandible? 1. External oblique ridge. 2. Mylohyoid ridge. 3. Mental foramen. 4. Coronoid process.

(1) (2) (3)

(1) and (3)

(2) and (4)

(4) only

All of the above.

Please describe the matter of abuse