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
Which of the following is Initial Tooth Preparation stage? 
Select and explain. 
A. External wall finishing, B. Pulp protection, C. Convenience form, D. Debridement and inspection
C: Convenience form
Answer: C: Convenience form 
Explanation: Initial Tooth Preparation Stage

Step 1: Initial depth and outline form.
Step 2: Primary resistance form.
Step 3: Primary retention form.
Step 4: Convenience form.

Final Tooth Preparation Stage

Step 5: Removal of defective restorative material and/or soft dentin.
Step 6: Pulp protection.
Step 7: Secondary resistance and retention forms.
Step 8: External wall finishing.
Step 9: Final procedures: debridement and inspection.

 
Reference: Sturdevant operative dentistry 7th edition, Page No:125