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
Clinical signs of occlusal trauma include all except: 
Select and explain. 
A. Periodontal pockets, B. Migration of teeth, C. Tenderness on percussion, D. Increased width of periodontal ligament
A: Periodontal pockets
Answer: A: Periodontal pockets 
Explanation: None