title: Long-term clinical performance of resin-bonded fixed partial dentures with retentive preparation geometry in anterior and posterior areas.
abstract: OBJECTIVE
  The aim of this prospective clinical evaluation was to show the long-term clinical behavior of resin-bonded fixed partial dentures (RBFPD) with a retentive, minimally invasive preparation design.
  
  
  METHODS
  Since 1985, 232 RBFPDs with a retentive preparation design were placed under controlled clinical conditions. In 2005 and 2006, 84 fixed partial dentures could be re-evaluated. Using Kaplan-Meier analysis, the survival rate was determined. The probability of survival was calculated with several risk factors: location (anterior/posterior, maxilla/mandible), metal alloy of the framework (titanium/CoCr), number of pontics, and number of supporting teeth.
  
  
  RESULTS
  A total of 12 failures was observed and resulted in a survival rate of 77% after 10 years. However, only 4 catastrophic failures occurred. In such cases, the restoration was lost, or could not be re-bonded or repaired (survival rate 88% after 10 years). RBFPDs made of a titanium alloy exhibited a statistically significantly higher survival rate than RBFPDs made of a nonprecious CoCr alloy in terms of all failures. Only slight but not statistically significant differences between the covariates maxilla, mandible, anterior/posterior region, number of pontics, and number of abutment teeth were observed.
  
  
  CONCLUSIONS
  Within the limitations of this study, RBFPDs seem to be a reliable restorative alternative to conventional short-span fixed dental prostheses.
authors.affiliation: Department of Prosthodontics, Ludwig Maximilians University, Munich, Germany. hans.aggstaller@gmx.de
authors.forename: Hans
authors.initials: H
authors.lastname: Aggstaller
authors.forename: Florian
authors.initials: F
authors.lastname: Beuer
authors.forename: Daniel
authors.initials: D
authors.lastname: Edelhoff
authors.forename: Peter
authors.initials: P
authors.lastname: Rammelsberg
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Gernet
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002484:Cementation / Q000379:methods; D002858:Chromium Alloys; D000044:Dental Abutments; D019232:Dental Restoration Failure; D003779:Denture Design; D003781:Denture Retention; D016379:Denture, Partial, Fixed, Resin-Bonded; D005260:Female; D006801:Humans; D007180:Incisor; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D008963:Molar; D017060:Patient Satisfaction; D011446:Prospective Studies; D014025:Titanium; D019231:Tooth Preparation, Prosthodontic / Q000379:methods*; D014093:Tooth, Artificial; D055815:Young Adult
chemical_list: D002858:Chromium Alloys; D014025:Titanium