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
Intracoronal restoration resists displacement mainly by 
Select and explain. 
A. Veneer retention, B. Wedge retention, C. Sleeve retention, D. All answers are wrong
B: Wedge retention
Answer: B: Wedge retention 
Explanation: None