Porcelain veneers are not supposed to fall or dislodge from your tooth !
Contact the cosmetic dentist and let him evaluate the reason, and let him help you re-bond the veneer.
The reason for porcelain veneers to pop off, may be :
1- Too much removal of your tooth structure, and dentin exposure, vs being on the enamel!
2- The bonding to your tooth must be re evaluated, to make sure proper steps has been taken.
3- Your bite and occlusion must be reevaluated.
4-The conditioning of your porcelain veneer prior to bonding must be evaluated by your dentist.
Out of the above four possibilities of why your porcelain veneer popped off, I am hoping that the preparation of your tooth was not aggressive and mostly in dentin !
The more enamel is preserved, the longer your porcelain veneers will last.
The rest can be fixed.
Dr Anthony Mobasser Reconstructive & Cosmetic Dentistry 9201 W. Sunset Blvd suite 618,Los Angeles Ca 90069 P : 310-550-0383