Journal of Dental Research, Vol 73, 529-535, Copyright © 1994 by International & American Associations for Dental Research Online Journals
A multi-practice clinical study on posterior resin-bonded bridges: a 2.5-year interim report
C. W. Verzijden, N. H. Creugers and J. Mulder
Department of Oral Function and Prosthetic Dentistry, Dental School, University of Nijmegen, The Netherlands.
A clinical trial of 201 posterior resin-bonded bridges (PRBBs) was
conducted partially in a University clinic and partially in general dental
practices, for study of the influence of some experimental variables on the
survival of these restorations. This report contains the results of an
interim analysis which was done after 2.5 years' follow-up. No significant
differences were found among the bonding systems used to adhere the PRBBs
(Clearfil F2/etching, Panavia EX/sandblasting, and Microfill Pontic
C/silicate-coating), or among the different preparation forms. PRBBs made
in general dental practices were as retentive as those made in the
University clinic. The "location" factor was found to be highly significant
(p = 0.0001). The survival rates were 81% for maxillary PRBBs and 56% for
mandibular PRBBs.
