Its been a long standing debate that was just recently put to rest.
Custom Athletic Mouth Guards More Effective Than Store-Bought Mouth Guards for Reducing Concussion Risk
Hi!
Actually they just came out with a new study backed by the ADA & AGD(published in May of this year 2014) where they monitored six high school football teams over the course of two years Study shows over-the-counter mouth guards don't protect as well - NFL.com. Three teams were able to use...