Endodontic retreatment: clinical comparison of reciprocating systems versus rotary system in disinfecting root canals

Martinho, Frederico Canato; Freitas, Lílian Ferreira; Nascimento, Gustavo G.; Fernandes, Antônio Carlos; Leite, Fábio Renato Manzolli; Gomes, Ana Paula Martins; Camões, Izabel Coelho Gomes

doi:10.1007/s00784-014-1360-9

Cited by 31 publications

(34 citation statements)

References 33 publications

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“…Recently, the reciprocating systems, originally designed for root canal preparation, have also been recommended for the removal of filling materials, as they allow advancing toward the apex. Single-file reciprocating systems are as effective as the conventional, multi-file rotary systems specifically designed for gutta-percha and sealer removal, yet they are faster (9)(10)(11)(12)(13). However, regardless of the technique, irritants such as root-filling materials, dentin chips, irrig-ants, and microorganisms and their byproducts, usually extrude at least to some degree into the periapical tissues (11,(13)(14)(15).…”

Section: Introductionmentioning

confidence: 99%

Cytotoxic effect of the debris apically extruded during three different retreatment procedures

et al. 2016

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Abstract:We evaluated the cytotoxic effects of the debris apically extruded during root canal retreatment on primary human osteoblast (HOb) cells in vitro. TNF-α and IL-1β levels were also measured. We examined three different techniques: conventional hand-files, and Mtwo and Reciproc retreatments. Filled mandibular incisors were prepared for a cytotoxicity assay in an experimental root model. The material was divided into three groups according to the technique used. Ten teeth were used as control. HOb cells were exposed to the extruded content and cytotoxicity was evaluated using the MTT test (assessing cell metabolic activity). TNF-α and IL-1β production was also analyzed using enzyme-linked immunosorbent assay. Then, all the teeth were radiographed and the residual filling material was quantified. Data were subjected to analysis of variance (ANOVA) and Tukey's test (P < 0.05). The conventional hand-file technique was significantly more cytotoxic than the other methods (P < 0.05). Reciproc was less cytotoxic than Mtwo retreatment (P < 0.05). All endodontic retreatment techniques led to a significant upregulation of IL-1β levels (P < 0.05). However, only the conventional hand-file technique caused a significant increase in TNF-α levels (P < 0.05). Root-filling removal did not affect the levels of these proteins (P > 0.05). The Reciproc system required less time than the other two methods to remove the root-filling materials (P < 0.01). The endodontic retreatment with Reciproc was the least cytotoxic and the least time-consuming method of gutta-percha and sealer removal. (J Oral Sci 58, 211-217, 2016)

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Section: Introductionmentioning

confidence: 99%

Cytotoxic effect of the debris apically extruded during three different retreatment procedures

et al. 2016

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“…After screening titles and abstracts, 20 articles were included for review of the full text. One study evaluated endotoxin reduction after root canal instrumentation in root canal retreatment (19), while two studies evaluated the same after root canal instrumentation in root canal treatment (20,21). Three articles were included for further analysis to inform this review.…”

Section: Resultsmentioning

confidence: 99%

“…Seventeen papers were excluded as they did not meet the inclusion criteria. The sample size ranged from 30 (19,21) to 48 (20). The Kappa value of inter-reader agreement was 0.80 (substantial agreement).…”

Section: Resultsmentioning

confidence: 99%

“…Of the two studies involving root canal treatment, one study (20) (19)(20)(21) showed a significant reduction in endotoxin following treatment with rotary and reciprocating instruments. However, all studies reported no significant differences between the instrument groups in endotoxin reduction.…”

Section: Resultsmentioning

confidence: 99%

“…However, all studies reported no significant differences between the instrument groups in endotoxin reduction. Two studies (19,20) were included in the meta-analysis (Fig. Two studies presented their data in median and range values (19,20), while the third study presented only the median value (21).…”

Section: Resultsmentioning

confidence: 99%

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Effect of instrumentation systems on endotoxin reduction from root canal systems: A systematic review of clinical studies and meta‐analysis

et al. 2018

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This systematic review assessed the effect of different root canal instrumentation systems on endotoxin reduction from the root canal system. The literature search was conducted in two electronic databases (PubMed and Scopus) using specific key words. The search strategy followed the PRISMA guidelines. Qualitative synthesis and quantitative synthesis of the data were performed and data interpretation was done based on the guidelines in the Cochrane Handbook. The risk of bias was assessed using Cochrane criteria. The initial search yielded 600 citations, of which three papers met the criteria for inclusion in this review. Studies showed a significant reduction in endotoxin following rotary and reciprocating instrumentation, with no significant differences between them. The meta-analysis showed no statistical significant difference between reciprocation and rotary files (P > 0.05). In conclusion, the instrumentation techniques compared in this review decrease endotoxin content from root canals, with no significant difference between them.

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Endodontic Treatment of Apical Periodontitis

Ørstavik¹

2019

Essential Endodontology

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Endodontic retreatment: clinical comparison of reciprocating systems versus rotary system in disinfecting root canals

Abstract: All systems tested were effective to remove cultivable bacteria and endotoxin in endodontic retreatment. As no differences among systems were observed, it is possible to suggest that clinicians should choose the preferred technique to perform endodontic.

Cited by 31 publications

References 33 publications

Cytotoxic effect of the debris apically extruded during three different retreatment procedures

Cytotoxic effect of the debris apically extruded during three different retreatment procedures

Effect of instrumentation systems on endotoxin reduction from root canal systems: A systematic review of clinical studies and meta‐analysis

Endodontic Treatment of Apical Periodontitis

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