I have tmj so dental work on back teeth causes spasm and closure. should i buy a rubber block? where from? what kind?

Dentist would have: A bite block to help you stay open is something that dentist will usuually have in there office. A dentist can purchase them fom almost any dental supplier. They come is several sizes so there should be one to fit you. To make your visits easier if you apply moist heat to the sides of your face and massage the area this may help loosen the muscles and makeit easier to open.

No need: No need to buy a bite block, your dentist should have one or get one to use on you. You might think about taking (if you can) an Aspirin product an hour before any non surgical appointment. Also see if your dentist or another has a cold laser to use on the muscles before and after treatment.

Ask your Dentist: Dental offices should have a bite block for you to help you with staying open. Ypu may want to see a dentist with dawson and pankey training to help you with your tmj.

Should not need to: A rubber bite block should be a standard assessory in any dental office. Be sure to express your concerns to the dentist/hygienist prior to treatment/cleanings. The dentist should look into your symptoms, though, because the spasms are not normal.

Dental work: To restore teeth is best completed after resolution of TMJ issues. Based on your brief story, you should consult w your dentist about a custom mouth appliance to help with your TMJ issues as an initial step.

Ask Dentists: All dentits should have bite blocks. Ask him/her to use it.