The concentration of heavy stresses in the connector area increases the risk of catastrophic fracture. Therefore, it is mandatory to evaluate prospective abutments in terms of their periodontal health with emphasis on abutment mobility. Prospective abutments exhibiting increased mobility should not be used as a foundation for all-ceramic FPDs. The use of all-ceramic FPDs with a cantilever design is questionable because of the possibility of developing heavy stress at the connector as the pontic acts as a lever that is depressed under occlusal forces. Finally, heavy bruxers who exhibit severe parafunctional activity that cannot be controlled may not be candidates for all-ceramic FPDs. With all-ceramic systems for FPDs, should the framework not fit precisely, a new definitive impression must be made, because the
framework cannot be sectioned and joined as with metal-ceramic FPDs.