Comparative Analysis of Efficacy and Cleaning Ability of Hand and Rotary Devices for Gutta-Percha Removal in Root Canal Retreatment: An in vitro Study

Reddy, Narender; Admala, Shilpa Reddy; Dinapadu, Sainath; Pasari, Srikanth; Reddy, M. Prathapa; Rao, Murali

doi:10.5005/jp-journals-10024-1377

Cited by 14 publications

(9 citation statements)

References 17 publications

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“…This was in accordance with Dadresanfar et al (35) and Aly et al (31). On the contrary, Reddy et al (36) and Roshdy et al (37) reported that the apical part revealed the maximum residual filling material. This might attributable to the use of xylene as a solvent and single rooted teeth in the first study, and the use of bioceramic sealer in the second study.…”

Section: Discussionsupporting

confidence: 88%

Influence of Chloroform and Passive Ultrasonic Irrigation on Removal of Endodontic Filling Material During Retreatment (An in Vitro Study)

Aly

Aboelseoud

Sherif

2023

Alexandria Dental Journal

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INTRODUCTION:Removal of initial endodontic filling material during retreatment is mandatory for favorable outcomes. OBJECTIVES: This study aimed to assess the influence of chloroform and passive ultrasonic irrigation (PUI) on the retrieval of endodontic filling material during retreatment using CBCT for evaluation. METHODS: Forty extracted single canaled lower premolars were decoronated, instrumented with ProTaper Next files (X3), and filled with lateral condensation technique. Samples were randomly distributed into two groups with further subdivision into four subgroups according to the use of chloroform and PUI as follows: Group A1 (chloroform/PUI), Group A2 (chloroform /without PUI), Group B1 (without chloroform/PUI), Group B2 (negative control) (without chloroform / without PUI). Retreatment was done with ProTaper Universal retreatment (PTU) files in all teeth. Before and after-retreatment CBCT-scans were done for all samples, and the residual volumes were measured. Statistical analysis was performed with a level of significance set at a P-value of 0.05. RESULTS: Complete removal of endodontic filling material was not achieved by any tested techniques. However, the negative control group (B2) showed the least mean percentage of residual volume (5.95%), while chloroform with the PUI group (A1) showed the greatest mean percentage of the residual volume (17.98%), with no significant difference between the four study groups. The greatest mean residual volume was revealed at the coronal third in all study groups. CONCLUSION: PTU-file without chloroform and PUI was the most effective in removing endodontic filling material.

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Section: Discussionsupporting

confidence: 88%

Influence of Chloroform and Passive Ultrasonic Irrigation on Removal of Endodontic Filling Material During Retreatment (An in Vitro Study)

Aly

Aboelseoud

Sherif

2023

Alexandria Dental Journal

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“…With the advent of rotary instruments, studies have been conducted on their performance during endodontic retreatments. Thus, some systems achieved expressive results in terms of cleaning efficacy and time period when compared with manual technique [5,11,12,24].…”

Section: Discussionmentioning

confidence: 99%

“…These files have a convex triangular cross-section [26] similar to that of conventional Protaper files S and F. Moreover, D1 file has active point, making easy its initial penetration in the filling material [16,17]. This design improves the instrument's performance in terms of removing the filling material [24].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of four gutta-percha removal techniques for endodontic retreatment

Medeiros¹,

Gabardo²,

Moraes³

et al. 2015

RSBO

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The endodontic retreatment is the first choice in cases of endodontic treatment failure. Objective: To evaluate the ability of removing gutta-percha from root canal walls, through analyzing the time and different techniques. Material and methods: Sixty extracted human mandibular pre-molars were used. After instrumentation with crown-down technique, the obturation was performed by Tagger’s hybrid technique. The specimens were divided into 4 groups (n = 15), according to removal procedure: group I (manual + solvent), group II (manual + Gates-Glidden + solvent), group III (Protaper Universal Retreatment System) and group IV (Protaper Universal System + solvent). The time period for gutta-percha removal was measured with a stopwatch. The roots were sectioned and the remnants were visually evaluated, according to the following scores: 0 – without remnant, 1 – presence of only cement, 2 – presence of cement and gutta-percha in small amounts, and 3 – presence of cement and gutta-percha in large amounts. Data were statistically evaluated with the GraphPad InStat software. Results: Group II exhibited the shortest time of execution, with significant differences in relation to groups I and IV, which obtained the longest time periods. Group III showed an intermediate time period, with statistically significant differences in relation to group IV. Group IV obtained the best scores of cleaning, although there was no statistical difference among groups. Conclusion: There was no statistical significant difference among the techniques regarding the time and effectiveness in removing filling material from the root canal walls.

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“…The application of solvent during root canal retreatment is controversy. It is known that solvents have been used to facilitate the process, but these should be used with care given their cytotoxic potential and the possibility of forming a residual film of softened gutta-percha on the root canal walls [12,13]. Taking it into account, in the present study, the solvent was restricted to the coronal portion of the gutta-percha, just to facilitate the initial penetration on the gutta-percha and the volume was minimal.…”

Section: Discussionmentioning

confidence: 99%

Comparison of the efficacy of nickel-titanium rotary systems with or without the retreatment instruments in the removal of gutta-percha in the apical third

Alves¹,

Ribeiro²,

Monsalve

et al. 2014

BMC Oral Health

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BackgroundThe purpose of this study was to compare the efficacy of nickel-titanium rotary systems with or without the retreatment instruments in the removal of gutta-percha from the apical third.MethodsThe systems compared were as follows: ProTaper Universal (PT), ProTaper Universal Retreatment (PTr), Mtwo (M2) and Mtwo Retreatment (M2r). Sixty extracted mandibular incisors were treated with a crown-down technique and filled with gutta-percha and sealer. The apical diameter was standardized in 0.30 mm, 1 mm from the apex. The teeth were distributed into 4 experimental groups: PT, PTr, M2 and M2r. In PTr and M2r groups, filling materials were removed by PTr/M2r followed by root canals preparation up to a PT F4/M2 40; in groups PT/M2, the filling materials were removed and the root canals were prepared by PT up to a PT F4/M2 up to a M2 40. The roots were split and photomicrographing. The percentage of clean area in the apical 5 mm was calculated using software. Data were analyzed with the Kruskal-Wallis test.ResultsRemaining material was found in all hemisections and there was no statistically significant difference between the groups (p = 0.09). Considering the surface of the canal walls of all teeth, the mean of the percentage of clean area was 54%.ConclusionsConsidering the applied methodology, remaining filling material was found in all hemisections, regardless of the retreatment technique and PT or M2 were as effective as PTr/PT or M2r/M2.

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Comparative Analysis of Efficacy and Cleaning Ability of Hand and Rotary Devices for Gutta-Percha Removal in Root Canal Retreatment: An in vitro Study

Cited by 14 publications

References 17 publications

Influence of Chloroform and Passive Ultrasonic Irrigation on Removal of Endodontic Filling Material During Retreatment (An in Vitro Study)

Influence of Chloroform and Passive Ultrasonic Irrigation on Removal of Endodontic Filling Material During Retreatment (An in Vitro Study)

Evaluation of four gutta-percha removal techniques for endodontic retreatment

Comparison of the efficacy of nickel-titanium rotary systems with or without the retreatment instruments in the removal of gutta-percha in the apical third

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