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Volume 29 , Issue 4
July/August 2016

Pages 351–353


Fit Analysis of Different Framework Fabrication Techniques for Implant-Supported Partial Prostheses

Aloísio Oro Spazzin, PhD/Atais Bacchi, PhD/Alexandre Trevisani, DDS/Ana Paula Farina, PhD/Mateus Bertolini Fernandes dos Santos, PhD


PMID: 27479340
DOI: 10.11607/ijp.4542

Purpose: This study evaluated the vertical misfit of implant-supported frameworks made using different techniques to obtain passive fit. Materials and Methods: Thirty three-unit fixed partial dentures were fabricated in cobalt-chromium alloy (n = 10) using three fabrication methods: one-piece casting, framework cemented on prepared abutments, and laser welding. The vertical misfit between the frameworks and the abutments was evaluated with an optical microscope using the single-screw test. Data were analyzed using one-way analysis of variance and Tukey test (α = .05). Results: The one-piece casted frameworks presented significantly higher vertical misfit values than those found for framework cemented on prepared abutments and laser welding techniques (P < .001 and P < .003, respectively). Conclusion: Laser welding and framework cemented on prepared abutments are effective techniques to improve the adaptation of three-unit implant-supported prostheses. These techniques presented similar fit.


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