Unfortunately, we hear this complaint from time to time. If the bonding is properly executed than the restoration should not chip this quickly. Its important for the treating dentist to understand the mechanics of the patient's bite and how to properly handle the composite material. The chipped area of the enamel/dentin should be treated with the correct clinical steps to adequately apply the adhesive bonding liquid and resin together. If you do not feel comfortable with your dentist's ability or how often the bonding has chipped or dislodged, than i would consider switching to a new dentist perhaps.
it really depends on your bite and amount of space present. if your bite functions in a protective fashion, where your back teeth and front teeth tract smoothly relative to each other, than the porcelain veneers should not chip or break. Especially if they were prepared and fabricated correctly.
VASOLINE!! another great use of vasoline is to dilute the whitening agent a little by placing vasoline on outer layer of your teeth to help dampen the reaction. and you don't need to overload the tray. very important to not use too much whitening agent, just a TEARDROP! hope you get a BRIGHTER SMILE
