can i have veeners fitted over porcelin crowns for wonky teeth
Thank you for your questions . Answering them in order:
1. On the whole I would recommend new crowns instead of veneering existing ones. The simplest treatment is usually the best. Veneering over existing crowns can lead to cosmetic failure.
2. When treating relatively healthy poorly positioned teeth the first choice of treatment is a brace. I this is not acceptable to you then a veneer would be the best option over a crown. Veneers require considerably less tooth removal over a crown to get a wonderful aesthetic result.
3. Tooth whitening should be done before veneers and crowns are made. A settling of the colour over 2 weeks should also be allowed to take place prior to taking the shade for the new restorations.Be aware that if you do bleach that you will have to keep bleaching topped up whilst you have the veneers / crowns in your mouth.
4. Survival rate of any dental restoration is usually measured over a 5 year period. By far the majority of veneers last this amount of time and usually considerably longer. I have been fitting veneers for 14 years in my current practice and have a success rate of approximately 98%. This is provided they are correctly maintained by the patient and that the patient sees us for regular oral health evaluations on a regular basis.
5. When comparing veneers the porcelain crowns the survival rate is similar.
Hope this helps,