Hello mam! The veneers do not chip off when they are designed correctly. They come off when there is a bite problem/grinding habit, poor bonding. Veneers are placed at ideal alignment which do not affect patients normal functions like speech, smiling and kissing. Only thing is avoid biting with your front teeth.

It depends on the patient’s occlusion. Any abnormal bite pressures like grinding, clenching, biting from front teeth could cause veneers to debond