Your dentist may be able to treat your TMJ. However, while you are working with him or her, you might also want to take other measures to alleviate TMJ. Yawn Carefully and Maintain Good Posture When you are yawning, be careful. This can overextend your jaw and exacerbate TMJ. Also, if you sit in a slumped over position, this can exacerbate your TMJ. Eat the Right Foods Take small bites of food.