As a hygienist who worked for years in a TMJ-centric practice, I've seen how devastating parafunctional habits can be for a person’s oral and overall health. I’ve also learned how truly complex each patient’s unique experience can be. For many years, we’ve assumed that teeth grinding was the reason why our patients develop TMD, but what if that's not the case? What else could it be? Scroll down to find out.—Bethany Montoya, BAS, RDH, Editorial Director