Most people grind and clench their teeth from time to time. Occasional teeth grinding, medically called “bruxism” usually does not cause harm. When teeth grinding occurs on a regular basis, the teeth can be damaged by excessive wear and other complications can arise. It is important that you have your teeth evaluated by a dentist in order to determine if a nightguard is needed. Many individuals do not realize the extent of the grinding as most of it occurs during the night.