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
Most common complication during ridge split or bone spreading is 
Select and explain. 
A. Dehiscence, B. Facial plate splitting, C. Implant micro movement, D. Poor position of implant
B: Facial plate splitting
Answer: B: Facial plate splitting 
Explanation: None