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
Direct procedure for fabrication of provisional restoration has a prime disadvantage of 
Select and explain. 
A. Low strength, B. Time consuming, C. Tissue trauma, D. Difficult in retrieval
C: Tissue trauma
Answer: C: Tissue trauma 
Explanation: However, the direct technique has significant disadvantages: potential tissue trauma from the polymerizing resin and inherently poorer marginal fit.