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
First dentin bonding agent to receive ADA acceptance: 
Select and explain. 
A. Clearfill, B. Cervident, C. Scotchbond 2, D. Sevitron
C: Scotchbond 2
Answer: C: Scotchbond 2 
Explanation: Scotchbond 2 was the First dentin bonding system to receive “provisional” and “full acceptance” from the American Dental Association (ADA). It is an example of 3rd generation dentin bonding agent.
Sturdevant 7th edition page 143