Dr. Rob DiVito
Scottsdale AZ Dentist, Family Dentist, General Cosmetic Dentist
TMJ and Bruxism: How Teeth Grinding Damages the Jaw Joint
Bruxism — clenching and grinding, mostly during sleep — is the single most common driver of TMJ disorder we see. The forces involved are enormous: night grinding can exceed normal chewing force many times over, applied for hours with no rest.
Warning Signs You Grind
- Morning jaw soreness, facial fatigue, or temple headaches
- Flattened, chipped, or notched teeth; enamel wear your dentist keeps noting
- Tooth sensitivity without decay
- A partner who hears grinding at night
- Scalloped tongue edges or cheek ridges from pressure
How Grinding Becomes TMJ Disorder
The joint tolerates brief loads well. Sustained nightly compression inflames the joint capsule, degrades the cushioning disc, and trains jaw muscles into chronic overactivation — the full TMJ picture of pain, clicking, and restricted opening. Untreated, the damage is progressive: enamel does not grow back and disc damage compounds.
Treatment That Works
A drugstore boil-and-bite guard often makes grinding worse by giving the muscles a chewy target. Effective care is engineered: a custom occlusal guard designed from your bite records to decompress the joint, Botox for severe muscle overactivation, and T-Scan-guided bite adjustment when specific contacts trigger the clenching reflex.
When to See a TMJ Specialist
Grinding plus jaw pain is a progression warning — the earlier the intervention, the more tooth and joint you keep. Dr. Enrico DiVito has treated TMJ disorder in Scottsdale since 1980 using a non-surgical protocol: a structured exam, CBCT 3D imaging when indicated, custom oral appliance therapy, laser-assisted muscle treatment, and T-Scan-guided bite adjustment. Learn more about TMJ treatment in Scottsdale, review TMJ symptoms, or call (480) 990-1905 for a same-week TMJ evaluation — no referral needed.
Frequently Asked Questions
How do I know if I grind my teeth at night?
Morning jaw soreness or headaches, teeth that look flattened or chipped at the edges, increasing sensitivity, and a sleeping partner who hears the grinding are the classic signs. A dental exam can confirm the wear pattern.
Does bruxism cause TMJ, or does TMJ cause bruxism?
It runs both directions: grinding overloads the joint, and an unstable bite or joint can drive the muscles to grind. That is why we treat the bite, the joint, and the muscle activity together rather than just one piece.
What is the treatment for teeth grinding?
A custom night guard protects the teeth immediately; bite adjustment removes the interferences that trigger grinding; and for stubborn muscle overactivity, Botox for the jaw muscles reduces the force itself.