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
Gingival Recession is most common due to 
Select and explain. 
A. Tooth brush trauma, B. TFO, C. Deflective contacts, D. ANUG
A: Tooth brush trauma
Answer: A: Tooth brush trauma 
Explanation: None