Comparative evaluation of debris extruded apically by using, Protaper retreatment file, K3 file and H-file with solvent in endodontic retreatment

Arora, Chetna; Bahri, Rohit; Mittal, Neelam

doi:10.4103/1658-5984.112706

Cited by 7 publications

(16 citation statements)

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“…In the present study the highest mean score of extruded material during retreatment was observed in the manual Hedstrom group and the lowest when Twisted File rotary instruments were used. The results of the present study are in agreement with previous retreatment studies that also compared hand and engine-driven instruments and their impact on apical extrusion [7,12,14,16,17]. This could be explained with rotation and a crown-down preparation technique during instrumentation, which tends to pull dentinal debris into the flutes of the file and direct it toward the coronal part of the canal [3,19].…”

Section: Discussionsupporting

confidence: 91%

“…The results showed that the type of obturation material did not have a significant impact on the mean scores of apical extrusion, although the mean score was higher during resilon removal. Other studies also evaluated the extrusion of obturation material during retreatment [7,15,16,17], but these studies observed only the removal of gutta-percha. Apical extrusion during removal of different materials (gutta-percha, resilon and resin-coated gutta-percha) was compared in one study with a visual technique and a 4-degree scoring system [11].…”

Section: Discussionmentioning

confidence: 99%

“…Rezultati su pokazali da vrsta materijala za punjenje kanala nije imala značajan uticaj na vrednosti apikalne ekstruzije, iako je dobijena srednja vrednost bila nešto veća tokom uklanjanja resilona. Druge studije su takođe ocenile ekstruziju opturacionog materijala tokom retretmana [7,15,16,17], ali su ove studije ispitivale samo uklanjanje gutaperke. Apikalna ekstruzija tokom uklanjanja različitih materijala (gutaperka, resilon i gutaperka obložena smolom) upoređena je u jednoj studiji, takođe primenom vizuelne tehnike i ocenjivanjem pomoću četvorostepene skale [11].…”

Section: Diskusijaunclassified

“…U ovoj studiji najveća srednja vrednost za količinu ekstrudiranog materijala tokom retretmana primećena je u ručnoj Hedstrom grupi, a najniža kada su korišćeni rotirajući instrumenti Twisted File. Rezultati ove studije slažu se sa prethodnim studijama retretmana u kojima su takođe upoređeni ručni i različiti mašinski pokretani instrumenti i njihov uticaj na apikalnu ekstruziju [7,12,14,16,17]. Ova pojava bi se mogla objasniti rotacijom i krunično-apeksnom tehnikom instrumentacije, kojom se teži da se dentinski debris i ostaci materijala povuku u navoje instrumenta i usmere prema koronarnom delu kanala [3,19].…”

Section: Diskusijaunclassified

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Apical extrusion of root canal filling material during the removal of gutta-percha and resilon

et al. 2020

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Introduction. Root canal filling material may be extruded during retreatment through the apical foramen and cause flare-up or chronic infection. The aim of this study was to compare the apical extrusion of gutta-percha and resilon filling materials during retreatment using hand and rotary instruments. Methods. Sixty extracted single-rooted teeth with single, straight canal were selected. Canals were prepared with ProTaper Universal rotary system to a size F2. Two groups (30 teeth in each) were filled with gutta-percha or resilon points, respectively. In both groups teeth were randomly divided into the three subgroups (10 teeth in each), based on the instruments used for retreatment: Hedstrom hand files and two rotary groups- ProTaper and Twisted File instruments. Apical extrusion was detected visually, using a 4-degree scoring system. Mean scores were calculated and analyzed statistically (t-test and ANOVA). The level of significance was set at p < 0.05. Results. Under tested experimental conditions, the type of canal filling material did not have significant effect on the results of apical extrusion during retreatment. Significantly more material was extruded in the resilon group when manual, Hedstrom file was used (1.80 ? 1.13) than rotary ProTaper (0.60 ? 0.70) and Twisted File (0.50 ? 0.71). Conclusions. The use of a rotary technique is recomended to minimize apical extrusion, especially when resilon obturation material is removed during retreatment.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Section: Diskusijaunclassified

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Apical extrusion of root canal filling material during the removal of gutta-percha and resilon

et al. 2020

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“…This is followed by effective cleaning and shaping, and finally appropriate final refilling of the canal. [1][2][3][4][5][6][7][8][9][10] During retreatment procedures, a common finding is the extrusion of the filling material, necrotic pulp tissues, microorganisms and irrigants into the periapical tissues. Consequently, this might lead to postoperative inflammation, pain, flare-up or even failure of apical healing.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Assessment of Apically Extruded Debris and Retreatability of Two Sealers Using Two Rotary Retreatment Systems

Saba

Seyam

Saba

2017

Egyptian Dental Journal

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Objective: Quantitative assessment of apically extruded debris and retreatability of two sealers using two rotary retreatment systems Methodology: Two NiTi rotary file systems; ProTaper Universal (PT) retreatment files (Dentsply-Maillefer, Ballaigues, Switzerland) and Mtwo R retreatment (MT) rotary files (Sweden and Martina, Padova, Italy) and two sealers; AH Plus (Dentsply International Inc., York, PA, USA) and SmartPaste Bio (DRFP Ltd., Stamford, UK) were used in this study. The root canals of 40 single-rooted human premolar teeth having nearly similar length were prepared. The prepared root canals were obturated with gutta-percha and either AH Plus or Smart Paste Bio sealers (n=20/ group). Each group was then subdivided into two subgroups (n = 10 lsubgroup) according to whether the root filling material was removed using either Protaper Universal retreatment or MTwo Retreatment Kit. After retreatment, the apically extruded debris was collected in Eppendorf tubes which were weighed before and after retreatment with an electronic balance. The retreatability of the both sealers was assessed using CBCT imaging by calculating the volume of the residual filling material post-treatment in the middle and apical thirds of the root canals. Results were statistically analyzed using one-way-analysis-of-variance; (P<0.05). Results: Statistically, there was no significant difference in the weight of collected apically extruded debris nor in in the remaining volume of the obturating materials between all groups (P=0.849 and P=0.8831), respectively. Conclusions: All investigated retreatment techniques caused debris extrusion and left filling remnants inside the root canals. SmartPaste Bio sealer is as retreatable as AH Plus sealers.

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Effect of treatment variables on apical extrusion of debris during root canal retreatment: A systematic review and meta-analysis of laboratory studies

Uzunoğlu Özyürek,

Küçükkaya Eren,

Karahan

2024

J Dent Res Dent Clin Dent Prospects

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Background. This study aimed to systematically and comprehensively review the effect of various treatment variables on apically extruded debris (AED) during non-surgical root canal retreatment (NSRCRT). Methods. The study protocol is shared in the Open Science Framework database (https://osf. io/kjtdg/?view_only=17060180705745ec9dae9a01614f3880). An electronic search was conducted up to July 2022 to reveal related studies. Two reviewers critically assessed the studies for eligibility against inclusion and exclusion criteria and data extraction. Quantitative data synthesis was performed, and the risk of bias in the studies was also evaluated. Results. Forty-six studies were included in the systematic review and 14 in the meta-analysis. Conflicting or limited evidence was found for the effect of sealer type, obturation technique, and solvent use. The manual instrumentation increased the amount of AED compared to rotary instrumentation during the removal of filling materials (P<0.001). There was no significant difference in the amount of AED between the use of rotary and reciprocating files during the removal of filling materials (P=0.181). Conclusion. Rotary instruments can be recommended instead of manual instruments during the removal of filling materials to control the amount of AED. Further studies with a low risk of bias are needed to clarify the effect of other treatment variables on AED during NSRCRT.

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Comparative evaluation of debris extruded apically by using, Protaper retreatment file, K3 file and H-file with solvent in endodontic retreatment

Cited by 7 publications

References 1 publication

Apical extrusion of root canal filling material during the removal of gutta-percha and resilon

Apical extrusion of root canal filling material during the removal of gutta-percha and resilon

Quantitative Assessment of Apically Extruded Debris and Retreatability of Two Sealers Using Two Rotary Retreatment Systems

Effect of treatment variables on apical extrusion of debris during root canal retreatment: A systematic review and meta-analysis of laboratory studies

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