Lockjaw (trismus) is a painful condition that limits your ability to open your mouth all the way. It occurs when the muscles you use to chew spasm, meaning they can’t relax completely. The term ...

Q: I had trouble opening my mouth wide when I was getting my teeth cleaned, and the hygienist said it could be TMJ. But my sister, who is a chiropractor, says she thinks it’s a muscle spasm. What is ...

Discover essential information about temporomandibular joint disorders (TMDs), their causes, symptoms, diagnosis, and ...

Your dentist may recommend a night guard or occlusal splint to protect your teeth from wear, reduce muscle tension and jaw clicking. These are acrylic or nylon appliances custom-made to fit over the ...