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Volume 29 , Issue 2
March/April 2016

Pages 126–131


The Retread: A Definition and Retrospective Analysis of 205 Implant-Supported Fixed Prostheses

Thomas J. Balshi, DDS, PhD/Glenn J. Wolfinger, DMD/Stephen G. Alfano, DDS/Stephen F. Balshi, MBE


PMID: 26929948
DOI: 10.11607/ijp.4277

Purpose: Acrylic resin teeth on fixed implant prostheses are subject to time-dependent wear. The purpose of this retrospective analysis is to evaluate and describe the management of such wear in the context of selected variables—patient gender and age, dental arch location, and opposing dentition. The clinical and dental laboratory process to replace the worn teeth is defined as a retread. Materials and Methods: A retrospective database review from a single private prosthodontic practice was carried out on all patients who had undergone a retread procedure. The patient pool included 205 arches in 194 patients (70 in men, 135 in women) with a mean age of 57.4 years (range: 19.9 to 80.5 years). The retread procedure is described. Results: The mean time between final prosthesis delivery and retread was 7.8 years (range: 1.1 to 22.9 years). Statistical analysis was significant according to dental arch and opposing dentition. A statistical difference was also noted in patients undergoing multiple retread procedures, with a reduction in time between the subsequent procedures. Conclusion: Acrylic resin components of implant-supported hybrid prostheses wear over time and are influenced by a combination of the nature of the opposing dentition and patient habits. The dental laboratory process to retread the implant-supported framework is important for long-term patient care and maintenance of an appropriate vertical dimension of occlusion.


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