Your teeth are no more susceptible to developing cavities if properly designed and fully sealed veneers are placed on them. It is true that porcelain and composite resin cannot develop a cavity like natural enamel. The tooth structure at the interface of those materials or the parts of the teeth not covered by a veneer can still stain or develop tooth decay. This is why it is so important to schedule regular cleanings and evaluations with your dentist to monitor for the development of cavities or other potential issues.