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Type: Artigo de periódico
Title: Investigation Of The Marginal Adaptation Of Root-end Filling Materials In Root-end Cavities Prepared With Ultrasonic Tips.
Author: Gondim, E
Zaia, A A
Gomes, B P F A
Ferraz, C C R
Teixeira, F B
Souza-Filho, F J
Abstract: To compare the surface topography of root apices following ultrasonic root-end preparation, and again after root-end fillings submitted to three different finishing techniques. Eighty-one root-end cavities prepared ultrasonically in human canines, were divided at random into three test groups of 27 each. The cavities were filled with Super-EBA, IRM, or ProRoot-MTA and finished by ball burnishing. Eighteen roots from each group received a final finish with either a 30-fluted tungsten carbide finishing bur, or a Zekrya carbide 28 mm bur after storage in water at 37 degrees C for 24 h. The root-end surface topographies were reproduced by means of polyvinylsiloxane impressions and epoxy resin replicas. Scanning electron micrography (SEM) images of each replica were taken prior to and after root-end filling. An image analysis system was used to compare the alteration of the marginal chipping areas and to calculate the gaps located in the dentine/root-end filling interface. When a bur was used to finish the set materials, a significant (P < 0.05) area of marginal chipping was eliminated. The finishing technique did not significantly (P > 0.05) affect the incidence of gaps in groups root-end filled with MTA or IRM. Super-EBA and IRM retrofillings finished with a ball burnisher or a Zekrya bur displayed a significantly (P < 0.05) larger calculated gap area than roots filled with MTA. Under this in vitro study, the marginal adaptation of MTA was good with or without finishing procedures. Applying a finishing bur over the condensed and set IRM and Super-EBA created better marginal adaptation.
Subject: Aluminum Compounds
Analysis Of Variance
Calcium Compounds
Dental Marginal Adaptation
Dental Pulp Cavity
Dentin-bonding Agents
Drug Combinations
Equipment Design
Image Processing, Computer-assisted
Microscopy, Electron, Scanning
Replica Techniques
Retrograde Obturation
Root Canal Filling Materials
Root Canal Preparation
Surface Properties
Tooth Apex
Tungsten Compounds
Ultrasonic Therapy
Zinc Oxide-eugenol Cement
Citation: International Endodontic Journal. v. 36, n. 7, p. 491-9, 2003-Jul.
Rights: fechado
Date Issue: 2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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