Abstract
Background. The present study aimed to test the efficacy of novel reciprocating systems in terms of gutta-percha removal of roots obturated with warm vertical compaction technique. Methods. Ninety straight rooted maxillary incisors were enlarged with hand files up to a # 50/02 apical size and obturated using warm vertical compaction technique. The specimens were divided into four groups according to system used for filling removal, as Reciproc Blue, Reciproc, WaveOne Gold and hand-instrumentation. The residual filling materials and time required for root canal removal were calculated. Statistical analyses were performed using one-way analysis of variance and Tukey tests with 5% significance threshold. Results. There were no significant differences among Reciproc, Reciproc Blue and WaveOne Gold (P > 0.05). Hand-instrumentation group left significantly greater root canal filling material (P < 0.05). The time required for root canal filling removal was significantly shorter in the Reciproc group followed by WaveOne Gold, Reciproc Blue and hand-instrumentation groups (P< 0.05). Conclusion. Efficacy of Reciproc Blue, WaveOne Gold and Reciproc instruments for root canal filling removal were similar and superior to hand-instrumentation.
Highlights
Nonsurgical retreatment aims to remove previous root canal filling material completely and regain access to the apical foramen with the goals of achieving proper disinfection by cleaning and reshaping the root canal system.[1]
There were no significant differences among Reciproc, Reciproc Blue and WaveOne Gold (P>0.05)
The time required for root canal filling removal was significantly shorter in the Reciproc group followed by WaveOne Gold, Reciproc Blue and hand instrumentation groups (P
Summary
Nonsurgical retreatment aims to remove previous root canal filling material completely and regain access to the apical foramen with the goals of achieving proper disinfection by cleaning and reshaping the root canal system.[1]. Several nickel-titanium (NiTi) motor-driven instruments have been suggested for removal of root canal filling materials to reduce operator fatigue and time.[4] The use of instruments with a reciprocating motion has been reported to be a more rapid technique for the removal of root canal filling materials as compared to the use of a hand file or rotary instruments.[5] Reciproc and Reciproc Blue (VDW, Munich, Germany)—instruments designed to function with a reciprocating movement—are produced from an M-wire and a novel thermally treated Blue wire, respectively. The present study aimed to test the efficacy of novel reciprocating systems in terms of gutta-percha removal from root canals obturated with warm vertical compaction technique
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