Root canal retreatment using reciprocating and continuous rotary nickel-titanium instruments

ABSTRACT Objective: The complete filling material removal during endodontic retreatment is a clinical procedure difficult to achieve. The aim of this study was to evaluate the efficacy of reciprocating and continuous rotary nickel-titanium instruments used in root canal retreatment. Materials and Me...

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Bibliographic Details
Published in:European journal of dentistry 2015-04, Vol.9 (2), p.234-239
Main Authors: de Souza, Patricia Fonseca, Goncalves, Leonardo Cantanhede Oliveira, Marques, Andre Augusto Franco, Junior, Emilio Carlos Sponchiado, Garcia, Lucas da Fonseca Roberti, de Carvalho, Fredson Marcio Acris
Format: Article
Language:English
Subjects:
Composition
Dental fillings
Innovations
Nickel (Metal)
Original
Original Article
Properties
Root canal therapy
Titanium
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Summary:ABSTRACT Objective: The complete filling material removal during endodontic retreatment is a clinical procedure difficult to achieve. The aim of this study was to evaluate the efficacy of reciprocating and continuous rotary nickel-titanium instruments used in root canal retreatment. Materials and Methods: Forty freshly extracted human premolars were cleaned and shaped by the crown-down technique, followed by filling by the lateral compaction technique. The teeth were randomly separated into two groups ( n = 20), according to the system used for filling material removal: G1 - Reciproc and G2 - ProTaper Universal Retreatment System. The teeth were photographed under operating microscope at ×8 magnification; and the total area of the root canal and remaining filling material were quantified. Results: No statistically significant difference ( P > 0.05) in residual filling material was observed between groups; however, the time required for filling removal was significantly shorter for Reciproc system ( P < 0.05). Conclusions: It was observed remaining filling material in all teeth, irrespective of the system used; however, root canal retreatment was faster when reciprocating motion was used.
ISSN:1305-7456
1305-7464
DOI:10.4103/1305-7456.156834