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
Concept of bonding onto tooth was first described by 
Select and explain. 
A. Rochette, B. Livaditis, C. Tanaka, D. Thompson
A: Rochette
Answer: A: Rochette 
Explanation: In 1973, Rochette introduced the concept of bonding metal to teeth using flared perforations of the metal casting to provide mechanical retention. He used the technique principally for periodontal splinting, but also included pontics in his design.