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Type: Artigo de periódico
Title: Influence Of Using Clinical Microscope As Auxiliary To Perform Mechanical Cleaning Of Post Space: A Bond Strength Analysis
Author: Ferreira
Ricardo; Prado
Maira; Soares
Adriana de Jesus; Zaia
Alexandre Augusto; de Souza-Filho
Francisco Jose
Abstract: Introduction: The aim of the present study was to evaluate the influence of using a clinical microscope while performing mechanical cleaning of post space walls on the bond strength of a fiberglass post to dentin. Methods: Forty-five bovine roots were used. After preparation, roots were filled using gutta-percha and Pulp Canal Sealer (SybronEndo, Orange, CA). Subsequently, for post space preparation, the roots were divided into 3 groups: control (only heat condenser + specific bur of the post system); cleaning without a microscope, mechanical cleaning (after the procedure described in the control group, round burs were used to improve cleaning); and cleaning with a microscope, mechanical cleaning performed with round burs visualized under a clinical microscope. Then, fiberglass posts were cemented. The roots were prepared and evaluated by the push-out test. Data were analyzed using Kruskal-Wallis and Student-Newman-Keuls tests (P < .05). The failure pattern was classified as follows: adhesive between the cement and dentin, adhesive dentin/cement/post, mixed cohesive within dentin, mixed cohesive post, and mixed cohesive post/dentin. Results: The bond strength values (mean +/- standard deviation) were control (cervical 1.17 +/- 1.1, middle 0.40 +/- 0.3, apical 0.52 +/- 0.3, and total 0.95 +/- 1.9), cleaning without a microscope (cervical 1.66 +/- 2.3, middle 0.65 +/- 1.1, apical 0.79 +/- 1.2, and total 1.04 +/- 1.7), and cleaning with a microscope (cervical 3.26 +/- 2.8, middle 1.97 +/- 3.5, apical 1.85 +/- 4.1, and total 2.37 +/- 3.5). In the cleaning with a microscope group, the bond strength values were significantly higher than those in the other groups. In all groups, the main failure pattern was adhesive between cement and dentin. Conclusions: The use of a clinical microscope while performing mechanical cleaning during post space preparation improved the bond strength of a fiberglass post to dentin.
Subject: Endodontically Treated Teeth
Fiber Posts
Root Canals
Sem Evaluation
Resin Cements
Country: NEW YORK
Rights: embargo
Identifier DOI: 10.1016/j.joen.2015.05.003
Date Issue: 2015
Appears in Collections:Unicamp - Artigos e Outros Documentos

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