Bruxism refers to an oral parafunctional activity that occurs in most humans at some point in their lives. Grinding of the teeth and clenching of the jaw are the two main characteristics of this condition, which can occur during the day or at night.
Bruxism is one of the most common known sleep disorders and causes most of its damage during sleeping hours. The clenching and grinding which accompanies bruxism is symptomatic of a malfunctioning chewing reflex, which is turned off in non-sufferers when sleeping. For sufferers, deep sleep or even naps cause the reflex nerve control center in the brain to turn off and the reflex pathways to become active.
Typically, the incisors and canines (front 6 upper and lower teeth) of opposing arches grind against each other laterally. This side to side action puts undue strain on the medial pterygoid muscles and the temporomandibular joints. Earache, depression, headaches, eating disorders, and anxiety are among the most common symptoms of bruxism; these symptoms also accompany health issues such as chronic stress, Alzheimer’s disease, and alcohol abuse.
Bruxism is frequently misdiagnosed or not diagnosed at all, because it is only one of several potential causes of tooth wear. Only a trained professional can tell the difference between bruxing wear and wear caused by overly aggressive brushing, acidic soft drinks, and abrasive foods.