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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Efficacy of reciprocating systems for removing root filling material plus complementary cleaning methods in flattened canals: Microtomography and scanning electron microscopy study

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Author(s):
Borges, Mariana M. B. [1] ; Duque, Jussaro A. [1] ; Zancan, Rafaela F. [1] ; Vivan, Rodrigo R. [1] ; Bernardes, Ricardo A. [1] ; Duarte, Marco A. H. [1]
Total Authors: 6
Affiliation:
[1] Univ Sao Paulo, Dept Restorat Dent Dent Mat & Endodont, Bauru Dent Sch, Bauru, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: MICROSCOPY RESEARCH AND TECHNIQUE; v. 82, n. 7, p. 1057-1064, JUL 2019.
Web of Science Citations: 0
Abstract

The aim of this study was to evaluate three reciprocating systems and complementary cleaning methods on filling material removal during retreatment of flattened canals. Thirty-six mandibular incisors were prepared using rotary instruments up to size 25.08 and filled using the single-cone technique. Subsequently, the teeth were divided into three groups (n = 12) according to retreatment procedures: Reciproc Blue (RB): 25/0.08 and 40/0.06; ProDesign R (PDR): 25/0.06 and 35/0.05; and WaveOne Gold (WOG): 25/0.07 and 35/0.06. The remaining filling volume materials were assessed by means of micro-CT imaging before and after retreatment. After this, the specimens were subdivided into three groups according to complementary cleaning methods: XP-Endo Shaper (30/0.01); passive ultrasonic irrigation (PUI); 60 degrees oscillatory instrumentation with \#30 H-file, and micro-CT scan was taken. Then, the roots were cut in half and the samples were analyzed by scanning electron microscope (SEM). The data were analyzed statistically using Kruskal-Wallis and Dunn's Multiple Comparison test with significance level of 5%. None of the reciprocating files promoted complete removal of filling material and there was no statistical difference between the groups, regardless instrument size (p > 0.05). Complementary cleaning methods increased remnant filling removal (p < 0.05). XP-endo Shaper significantly reduced the amount of filling material in the apical and middle thirds, compared with H-files (p < 0.05), with no difference with PUI. In the SEM, there was no statistical difference among the instruments (p > 0.05). The reciprocating systems showed similar effectiveness in removing root filling material. Complementary cleaning method with the XP-Shaper enhanced filling material removal. (AU)

FAPESP's process: 15/03829-1 - Evaluation of solvents, NiTi instruments, methods and protocols employed in the of root canal retreatments
Grantee:Marco Antonio Hungaro Duarte
Support Opportunities: Regular Research Grants