Instruction: Please respond with yes if the product is a suitable substitute for the query, and no if it is not.

Input:
Query: shock doctor mouthguard
Product: Shock Doctor Ultra-Slim Microfit Mouthguard. 2.4mm Mouth Guard For Football, Hockey, Lacrosse, Baseball, Softball, Basketball, Boxing, MMA, Jiu Jitsu. Also for Night Mouth Guard for Teeth Grinding
Answer: no