I had 5 amalgam (29 year old) fillings replaced with composite restorations. Two of the 5 were sensitive. The doc replaced, based the teeth with fuigi 9 and layered composite on top. One by one and two by two, my teeth have been bombing out. All have had to have root canals. I know that two of the molars were deep but the others? I am baffled. The doc is baffled too. I am a grinder and a clencher. I had an accident 20 yrs ago landed on my left side of my face. That could be catching up to me, who knows. I also had an underbite. I had braced for 5 years to correct. I am wondering if the bonding materials didn't sit right with me and caused some kind of reaction? The other amalgams were not deep. Or it is a combination of all of the above. Does anyone have any ideas? I have talked with several endontists and dentists. Basically, they say it just is. I am not a smoker or do drugs. I am rapidly getting bankrupt with all of this dental work, yikes. plus, I had two other root canals that needed to be done 10 years ago but the doc felt it was a different tooth. NOT. I had a canine moved surgically and ortho.and the gums did not attach. It makes sense but it didnt hurt. I went back to my dentist yesterday with pain. In July, there was not an abcess or anything like it on tooth #30. Now, I have an abcess and the ligament is widened. It is tender. This is the only chewer that I have. I am waiting for buildups and crowns for my other teeth on the left side. I don't know what to do?