Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/244197
Type: Artigo de periódico
Title: Comparison Of The Accuracy Of Different Transfer Impression Techniques For Osseointegrated Implants
Author: Zen
Bruno Massucato; Soares
Eveline Freitas; Rodrigues
Mariana Agustinho; Luthi
Leonardo Flores; Consani
Rafael Leonardo X.; Mesquita
Marcelo Ferraz; Pessanha Henriques
Guilherme Elias
Abstract: The aim of this study was to evaluate 3 transfer techniques used to obtain working casts of implant-supported prostheses through the marginal misfit and strain induced to metallic framework. Thirty working casts were obtained from a metallic master cast, each one containing 2 implant analogs simulating a clinical situation of 3-unit implant-supported fixed prostheses according to the following transfer impression techniques: group A, squared transfers splinted with dental floss and acrylic resin, sectioned, and re-splinted; group B, squared transfers splinted with dental floss and bis-acrylic resin; and group N, squared transfers not splinted. A metallic framework was made for marginal misfit and strain measurements from the metallic master cast. The misfit between the metallic framework and working casts was evaluated with an optical microscope following the single-screw test protocol. In the same conditions, the strain was evaluated using strain gauges placed on the metallic framework. The data were submitted to one-way analysis of variance followed by the Tukey test (alpha = 5%). For both marginal misfit and strain, there were statistically significant differences between groups A and N (P < .01) and groups B and N (P < .01), with greater values for group N. According to the Pearson test, there was a positive correlation between the misfit and strain variables (r = 0.5642). The results of this study showed that the impression techniques with splinted transfers promoted better accuracy than the nonsplinted technique, regardless of the splinting material used.
Subject: In-vitro
Supported Prostheses
Zirconia Frameworks
Multiple Abutments
Fixed Prostheses
Vertical Misfit
Passive Fit
Strain
Precision
System
Country: LAWRENCE
Editor: ALLEN PRESS INC
Rights: fechado
Identifier DOI: 10.1563/AAID-JOI-D-13-00126
Address: http://www.joionline.org/doi/10.1563/AAID-JOI-D-13-00126?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub%3dpubmed
Date Issue: 2015
Appears in Collections:Unicamp - Artigos e Outros Documentos

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