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
The most important disadvantage of acrylic denture base is 
Select and explain. 
A. Porosity, B. Shrinkage, C. Tooth breakage, D. Water absorption
B: Shrinkage
Answer: B: Shrinkage 
Explanation: None