The exact cause of temporomandibular joint (TMJ) disorders is largely unknown. Some cases begin after an injury, while others may have more to do with a mix of joint structure, genetics, and stress.

Many TMJ cases resolve on their own or with simple treatments. TMJ symptoms often involve jaw pain, popping, or difficulty opening the mouth. Stress, teeth grinding, and jaw injuries are common causes ...

According to the National Institute of Dental and Craniofacial Research (NIDCR), approximately 12 million people in the United States have TMJ disorders (TMDs or also referred to as TMJDs). TMDs are a ...

Suggested Citation: "Appendix D: Masticatory System: Anatomy and Function." National Academies of Sciences, Engineering, and Medicine. 2020. Temporomandibular ...