Effectiveness of rotary or manual techniques for removing a 6-year-old filling material

Brazilian Dental Journal
Marco Antônio Hungaro DuarteMilton Carlos Kuga

Abstract

The aim of this study was to evaluate the effectiveness of manual and rotary instrumentation techniques for removing root fillings after different storage times. Twenty-four canals from palatal roots of human maxillary molars were instrumented and filled with gutta-percha and zinc-oxide eugenol-based sealer (Endofill) , and were stored in saline for 6 years. Non-aged control specimens were treated in the same manner and stored for 1 week. All canals were retreated using hand files or ProTaper Universal NiTi rotary system. Radiographs were taken to determine the amount of remaining material in the canals. The roots were vertically split, the halves were examined with a clinical microscope and the obtained images were digitized. The images were evaluated with AutoCAD software and the percentage of residual material was calculated. Data were analyzed with two-way ANOVA and Tukey's test at 5% significance level. There was no statistically significant differences (p>0.05) between the manual and rotary techniques for filling material removal regardless the ageing effect on endodontic sealers. When only the age of the filling material was analyzed microscopically, non-aged fillings that remained on the middle third of the canals prese...Continue Reading

References

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Citations

Feb 11, 2012·Photomedicine and Laser Surgery·Figen KaptanGunduz Bayirli
Apr 13, 2012·Microscopy Research and Technique·Marcus Vinícius Reis SóRicardo Abreu Da Rosa
Jul 31, 2013·International Endodontic Journal·F A Rached-JúniorY T C Silva-Sousa
Dec 19, 2013·Brazilian Oral Research·Mônica Sampaio do ValeThereza Cristina Farias Botelho
Jan 30, 2014·Brazilian Dental Journal·Gabriela Guardiola MüllerAugusto Bodanezi
Aug 24, 2011·Brazilian Dental Journal·Luiz Fernando FariniukRivail Antônio Sérgio Fidel
Sep 20, 2018·Brazilian Oral Research·Roberta Fonseca de CastroJuliana Melo da Silva Brandão
Nov 21, 2020·The Journal of Prosthetic Dentistry·Anna Thereza Peroba Rezende RamosMilton Carlos Kuga
Oct 22, 2021·International Endodontic Journal·Mahdi A AjinaBun San Chong

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