Can a lower missing molar cause tinnitus? my ears are fine so my doctor said it's because of that cuz my jaw muscles doesn't work properly anymore!

Tinnitus: I don't think a missing molar can cause tinnitus.

TMJ: TMJ patients will sometimes have tinnitus. If you have TMJ symptoms possible related.

Not likely: Tinnitus is a sound that is generated in the brain and could sound like like a radio transmitter. There is no cure for tinnitus, but it often becomes less noticeable and more manageable over time. See an ENT for examination.