If you find yourself waking up with sore jaw muscles or a headache, you may be suffering from bruxism. Bruxism is the grinding and clenching of teeth. Sometimes patients are not even aware they are clenching and grinding while they sleep. Bruxism can cause wear patterns or chips and cracks in the teeth right through the enamel. This wear can cause increased sensitivity. Over time, bruxism can also destroy the bone and gum tissue, which can result in the teeth becoming mobile. It can also lead to serious problems involving the jaw joint, such as Calgary TMJ treatment.