Clinical performance of resin-bonded bridges: a 5-year prospective study. Part III: Failure characteristics and survival after rebonding.
A total of 203 resin-bonded bridges were inserted under controlled clinical conditions and evaluated over a period of 5 years. During the evaluation period there were 47 dislodgements and 30 pontic fractures. The majority of the failures were retreated successfully. Dislodgement was in most cases due to fracture at the resin/retainer interface. The small number of fractures at the resin/tooth interface indicate that the clinical procedures, as used in this study, were satisfactory. Dislodged and rebonded resin-bonded bridges had a lower retention than original bonded bridges, indicating that patients with a dislodged bridge are a risk group for the retention of rebonded bridges. However, possible factors that may be responsible for this higher risk could not be demonstrated. The bridges which were removed for repair of the pontics and rebonded showed an acceptable retention. There was no relationship between the failure characteristic and the retainer type or the cementation material used.
Department of Occlusal Reconstruction, University of Nijmegen, The Netherlands.
N H
NH
Creugers
P A
PA
Snoek
M A
MA
Van 't Hof
A F
AF
Käyser
D000044:Dental Abutments; D001840:Dental Bonding; D003738:Dental Cements; D003779:Denture Design; D003780:Denture Repair; D003781:Denture Retention; D003830:Denture, Partial, Fixed / Q000706:statistics & numerical data*; D005069:Evaluation Studies as Topic; D006801:Humans; D011446:Prospective Studies; D011475:Prosthesis Failure; D012117:Resins, Synthetic; D012307:Risk Factors; D013314:Stress, Mechanical
D003738:Dental Cements; D012117:Resins, Synthetic