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Artigo Produção Nacional Revisado por pares
BIBTEX RIS

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

2003; Wiley; Volume: 36; Issue: 7 Linguagem: Inglês

10.1046/j.1365-2591.2003.00679.x

ISSN

1365-2591

Autores

Eudes Gondim, Alexandre Augusto Zaia, Brenda Paula Figueiredo de Almeida Gomes, Caio Cézar Randi Ferraz, Fabrício B. Teixeira, Francisco José de Souza‐Filho,

Tópico(s)

Dental Radiography and Imaging

Resumo

Abstract Aim 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. Methodology 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 °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. Results 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. Conclusion 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.

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