The muscles responsible for moving the jaw can handle a lot of chewing and talking. Overuse can lead to pain. Opening the jaw too widely, grinding or clenching of the teeth, injuries to the head or neck, sleeping disorders and stress can affect these muscles. Let us have a look at the anatomy of the jaw joint. Please fill in the missing words. Choose the correct word from the box. The treatment of grinding teeth depends very much on it's cause. Following are several treatment options and tips to help prevent bruxism. Fill in the blank spaces with one of the words from the box and thus complete the sentences.