Yes, bonding with composite resin (the white tooth colored filling material) can help with those grooves. Some patients have a more pronounced incisal edge, or slope, on the front part of their canines. I would encourage you bleach your teeth first, and then have your dentist place the bonding in those areas. The bonding does not bleach like your natural teeth and you'll want any work to blend as seamlessly as possible with your natural teeth. I would like to add that the bonding in those sites may stay or they may come off rather quickly; your canines take a lot of force and the bonding may 'pop' off as a result.
There can be several reasons for post-operative sensitivity following a root canal. Often, when the dentist cleans the canal inside of the root, he or she can irritate the bone at the tip of the root. The associated discomfort usually resolves within a few days time. Another possibility is that the root canal was not done completely and there can still be a vital part of the nerve at the tip, while other reasons are a fractured root or leakage. If after four weeks of sensitivity, I would encourage you to have the tooth re-evaluated, and if one is within a reasonable distance where you are in Thailand, preferably by an endodontist (a dentist that specializes in root canals).
Hi Betsyboop,Yes, it is still possible to make your crowns feel smooth. While it is best to do this before they are cemented, a dentist can still polish them using special intra-oral porcelain polishing burs. This can be done with the crowns in place.Best,Dr. Anderson
