Normal relaxation of the teeth is not closed up and down, but there is a little space, usually called resting jaw gap. Resting jaw gap is lifting the tension balance of the jaw muscles formed, can make the chewing muscles get enough rest. This gap is generally about 2 millimeters, the human jaw is relatively relaxed, comfortable state, and resting jaw position in the denture repair is an important basis for determining the vertical distance of the jaw. Usually do not deliberately clench your teeth, closed mouth muscle groups in a state of contraction for a long time will cause muscle fatigue, prolonged muscle fatigue may lead to muscle pain. It is recommended to maintain good oral habits, if there are abnormalities of tooth closure, should go to the regular hospital stomatology department as soon as possible for examination and treatment.