The paradoxes of fixed prosthodontics

(1) The replacement of a missing tooth or teeth by a fixed prosthesis as a preventive device is a paradox. (2) When a missing tooth is replaced by a fixed prosthesis, iatrogenic problems may occur. (3) The problems caused by the fabrication of a fixed partial denture must be recognized and controlled by both the patient and dentist. (4) Concerning the prognosis of any particular fixed prosthesis, we can only predict, from experience, the longevity of the replacement. The acutal life of the replacement is dependent upon the proficiency used in the maintenance procedures and the ability of the dentist to reduce or minimize the iatrogenic factors inherent in any fixed bridge.