Ive had my fillings replaced twice, and im still experiencing sensitivity and pain when i bite. my dentist and dental assistant have no idea whats caused this - ive never had this issue before. they constantly check my bite too. suggestions?

Tooth pain on biting is diagnostic problem usually related to one or a combination of five things, a high restoration in the bite, a fracture in the tooth structure, inflammation at the apex of the tooth, a filling flexing under pressure when bonding to the tooth structure is inconsistent or the restortion being close to the nerve and time needed to adjust and settle. You might want a 2nd opinion

It's probably time to see a specialist Endodontist who will have equipment not usually found in a General Dentist's office. Endodontist has the training and experience to evaluate for micro-fractures, partial death of the plural tissues inside your tooth. Endodontist will probably have both an Endodontic Microscope and a Cone Beam CT Scan.