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 DMF index is utilized for 
Select and explain. 
A. All deciduous teeth, B. All permanent teeth except the third molars, C. Cuspids and molars only, D. Six permanent teeth
B: All permanent teeth except the third molars
Answer: B: All permanent teeth except the third molars 
Explanation: None