This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
Radiographs are of great value in diagnosing periodontal
disease because they reveal 
Select and explain. 
A. Hard - to - soft tissue relationship, B. Morphology of bone deformities, C. Presence of pockets, D. Thickening of the lamina dura
D: Thickening of the lamina dura
Answer: D: Thickening of the lamina dura 
Explanation: None