I have had Veneers for 2 years and they keep breaking and falling out when eating. Why is this?

Based on your description of events, it sounds like you are either a night grinder or you eat very course meats and other foods, or your veneers were not prepped properly.  Sometimes dentist try to hard to conserve tooth structure and as a result, they do not trim enough of the tooth structure off to create a good enough foundation for the veneer.  This means that the veneer will stay in place pretty well, until a stress is placed upon it.  Veneers are what I do, so you can "Follow" me on Real Self to ask me more questions about them if you need to.Sarah Thompson, DMD

There are five different areas that may be causing this problem:1) Patient problems-when the patient is a bruxer (teeth grinder) or clencher, have an uneven bite, the more likely to break veneers.  Also hard foods.2) Material problems-different types of veneering materials, composite bonding the weakest, feldspathic porcelain the weakest porcelain, pressed ceramic like Empress stronger, pressed ceramic Emax porcelain very strong and natural looking, zirconia veneers very strong, but many times very lacking in esthetics3) Dental techniques by dentist-types of preparation, impressions, models, bonding adhesive and other protocols4) Laboratory production of veneers-cheap labs hardly ever produce as strong, well fitting, long lasting and most esthetic veneers as Labs specializing in cosmetic restorations (porcelain veneers and crowns)5) Condition of the tooth-how much tooth is there to bond onto.  Smaller, shorter teeth have less retention than longer, wider teeth.So, no dentist answer on the web can tell why you are having this kind of failure, whether it is something you are doing, some problem the dentist or lab is having, or just how much tooth the dentist has to work with.If you are disappointed with your cosmetic dentist, then suggest you find the best cosmetic dentist in your area and get a second opinion.  In general this doesn't happen, but some people for one reason or another, have repeated problems with their dentistry that is out of control of the dentist.

There are many reasons for this and if you feel the dentist clueless, you need to find another for an actual exam.  It could be the bite, it could be the material, it could be the bonding agent (glue), it could be the prep design.  No way to tell via the interweb.