Usually people change from a composite bonding to a ceramic veneer for many reasons. For example, its more aesthetic and stronger and will last longer. What are your reasons for wanting to make the change?
Hi, Yes you can fix cross bites with physiologic based orthodontics. No surgery is necessary. You can search for a LVI trained dentist who does this type of work.
Hi, Sounds like there is misalignment of your upper and lower jaw, which is affecting the way your teeth line up. Best approach would be to find someone who practices physiologic based orthodontics or dentistry. They can determine if in your case ortho or veneers would fix the problem. A photo would be helpful.
There is a high possibility that the bite maybe too high. The most conservative thing you can do is have that checked. If too high, you can adjust it and the pain should stop.
After placing a new crown, sensitivity can be normal. However, if it persists, you need to evaluate it again to make sure the bite isn't too high. If that doesn't solve the issue, then the nerve maybe involved and you may need additional treatment (such as a root canal).