Investigation of the marginal adaptation of root-end filling materials in root-end cavities prepared with ultrasonic tips

E Gondim; A A Zaia; B P F A Gomes; C C R Ferraz; F B Teixeira; F J Souza-Filho

doi:10.1046/j.1365-2591.2003.00679.x

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Investigation of the marginal adaptation of root-end filling materials in root-end cavities prepared with ultrasonic tips

Journal article

Peer reviewed

Investigation of the marginal adaptation of root-end filling materials in root-end cavities prepared with ultrasonic tips

E Gondim, A A Zaia, B P F A Gomes, C C R Ferraz, F B Teixeira and F J Souza-Filho

International endodontic journal, Vol.36(7), pp.491-499

07/2003

DOI: 10.1046/j.1365-2591.2003.00679.x

PMID: 12823705

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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.

Microscopy, Electron, Scanning

Dental Pulp Cavity - ultrastructure

Methylmethacrylates - chemistry

Humans

Oxides - chemistry

Tungsten Compounds

Silicates - chemistry

Carbon

Equipment Design

Tooth Apex - ultrastructure

Aluminum Compounds - chemistry

Analysis of Variance

Image Processing, Computer-Assisted

Retrograde Obturation

Surface Properties

Dental Marginal Adaptation

Zinc Oxide-Eugenol Cement - chemistry

Root Canal Preparation - instrumentation

Replica Techniques

Ultrasonic Therapy - instrumentation

Calcium Compounds - chemistry

Drug Combinations

Root Canal Filling Materials - chemistry

Dentin-Bonding Agents - chemistry

Details

Title: Subtitle: Investigation of the marginal adaptation of root-end filling materials in root-end cavities prepared with ultrasonic tips
Creators: E Gondim - Endodontic Unit, School of Dentistry of Piracicaba, State University of Campinas - UNICAMP, Piracicaba - SP, Brazil. gondimjr@ajato.com.br
A A Zaia
B P F A Gomes
C C R Ferraz
F B Teixeira
F J Souza-Filho
Resource Type: Journal article
Publication Details: International endodontic journal, Vol.36(7), pp.491-499
Publisher: England
DOI: 10.1046/j.1365-2591.2003.00679.x
PMID: 12823705
ISSN: 0143-2885
eISSN: 1365-2591
Language: English
Date published: 07/2003
Academic Unit: Endodontics
Record Identifier: 9984066077202771

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