Can anyone tell me what the procedure for rebonding a tooth is and how much pressure needs to be applied to the tooth? I have a compromised premolar that looks awful and the bonding is less than 2 years old. However, because of the tooth being compromised.......root canal and hairline fracture in the root, I am afraid.

How much "trauma" is applied to rebond (both sides need it, lingual and other side). Bottom of the tooth is actually fake and made of bonding.

Thanks.