Abdul K. Khan, DMD

The gold standard for root canals (especially on posterior teeth) is to do a full coverage crown. I would not let my patient get an onlay or filling after a root canal unless there were some extenuating circumstances. It is hard to make a final judgment without seeing an X-ray and the inside of your mouth. Although, it is not malpractice to not do a crown, you have to understand that it is what is best for you. A root canal hollows out the tooth and a crown is like a hard hat protecting you from breaking the tooth. I would highly recommend a crown but I am sure there are dentists that can do a minimal access preparation during the root canal (if there is no major cavity or existing loss of tooth structure) and then just place an onlay on top.

It is very hard to make any judgements after the temporary veneers are placed. I would wait to see the final veneers before determining if you want to keep them or not. Make sure you express your concerns to the dentist before cementation.

I cannot say for sure what caused the pulp to be exposed but if there is significant pain, a hole in your tooth, and a pulp exposure then there is no way to get rid of the sensitivity without doing a root canal and build up on that tooth. Trust me you do not want to touch your anterior crowns after they have been finally cemented.

I would go see a general dentist that can completely remove the crown and put you in a temporary to see if that will solve the problem. If it does, then go ahead and get a new crown made. I prosthodontist can help with this but so can a general dentist. I wouldn't jump to a root canal if the vitality of the tooth is fine, and there is no visible infection.

It is hard to judge without looking and probing inside the mouth, but based off the picture the chip looks very minimal. I would definitely monitor it and keep it clean but I would not jump to replacing the veneer immediately.