Efficacy of ProTaper Retreatment System in Root Canals Filled with Gutta-Percha and Two Endodontic Sealers

Só, Marcus Vinícius Reis; Saran, Caroline; Magro, Miriam Lago; Vier-Pelisser, Fabiana Vieira; Munhoz, M. F.

doi:10.1016/j.joen.2008.07.020

Cited by 64 publications

(80 citation statements)

References 16 publications

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“…However, this technique produces only a two-dimensional view of three-dimensional structures. However, recent investigations (4,5,20) have reported the applicability of the AutoCAD 2004 software to calculate the percentage of remaining filling material. This experiment denoted the superiority of the microscopic method over the radiography to determine percentage of remaining filling material.…”

Section: Discussionmentioning

confidence: 99%

“…Although the Shaping files of the ProTaper system allow for paintbrush movement (according to the manufacture instructions), the effect is not the same as with hand instrumentation. It should also be considered that hand files can be precurved and directed to the regions in which the tactile sensation indicates the presence of filling material (20).…”

Section: Discussionmentioning

confidence: 99%

“…This is consistent with the findings of other studies (4,5,15,19) and was observed in both radiographic and microscopic analysis of samples. The apical third is a critical zone, requiring a considerable enlargement when cleaning and shaping the canals (20). This procedure can lead to apical deviations that might be responsible for maintenance of filling material in the canal during retreatment.…”

Section: Discussionmentioning

confidence: 99%

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Effectiveness of rotary or manual techniques for removing a 6-year-old filling material

Duarte

Só

Cimadon³

et al. 2010

Braz. Dent. J.

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The aim of this study was to evaluate the effectiveness of manual and rotary instrumentation techniques for removing root fillings after different storage times. Twenty-four canals from palatal roots of human maxillary molars were instrumented and filled with gutta-percha and zinc-oxide eugenol-based sealer (Endofill) , and were stored in saline for 6 years. Non-aged control specimens were treated in the same manner and stored for 1 week. All canals were retreated using hand files or ProTaper Universal NiTi rotary system. Radiographs were taken to determine the amount of remaining material in the canals. The roots were vertically split, the halves were examined with a clinical microscope and the obtained images were digitized. The images were evaluated with AutoCAD software and the percentage of residual material was calculated. Data were analyzed with two-way ANOVA and Tukey's test at 5% significance level. There was no statistically significant differences (p>0.05) between the manual and rotary techniques for filling material removal regardless the ageing effect on endodontic sealers. When only the age of the filling material was analyzed microscopically, non-aged fillings that remained on the middle third of the canals presented a higher percentage of material remaining (p<0.05) compared to the aged sealers and to the other thirds of the roots. The apical third showed a higher percentage of residual filling material in both radiographic and microscopic analysis when compared to the other root thirds. In conclusion, all canals presented residual filling material after endodontic retreatment procedures. Microscopic analysis was more effective than radiographs for detection of residual filling material.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Effectiveness of rotary or manual techniques for removing a 6-year-old filling material

Duarte

Só

Cimadon³

et al. 2010

Braz. Dent. J.

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“…7,8,11,12 ProTaper Universal rotary system improved the previous ProTaper series by adding rotary retreatment instruments designed specifically to remove obturation material from root canals, and studies have reported their efficacy, cleaning ability and safety. 7,11,12,13 Declaration of Interests: The authors certify that they have no commercial or associative interest that represents a conflict of interest in connection with the manuscript.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of rotatory and reciprocating movements in root canal filling material removal

et al. 2014

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The purpose of this study was to compare the efficacy of reciprocating and rotary techniques for removing gutta-percha and sealer from root canals. Forty straight and oval single-rooted premolars were prepared up to size 30, filled with gutta-percha and sealer, and then randomly allocated to two experimental retreatment groups: ProTaper Retreatment System (PTRS) and WaveOne System (WS). Procedural errors, time of retreatment and apically extruded material were recorded for all the roots. The roots were radiographed after retreatment. The percentage of residual material was calculated using image analysis software. The data were analyzed by Kolmogorov-Smirnov and t tests, with a significance level set at 5%. No system completely removed the root filling material from the root canal. No significant differences were observed between the systems, in terms of residual filling material in any tested third (p > 0.05). WS was faster in removing filling material than PTRS (p < 0.05). Extrusion was observed in 4 cases in PTRS and in 5 cases in WS. No procedural errors were observed in either group. It can be concluded that although no differences were observed in the efficacy of PTRS and WS for removing root filling material, WS was faster than PTRS.

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“…Однако в клини-ческой практике этого часто не происходит. Появление никель-титановых инструментов, обладающих значи-тельной эластичностью, позволило использовать послед-ние в полновращательном машинном режиме, значитель-но ускорив процесс инструментальной обработки, а также успешно обрабатывать корневые каналы зубов с таким искривлением, которое было ранее недоступно ручным инструментам из нержавеющей стали [31][32][33][34][35][36][37][38][39][40][41][42]. В то же время принципы построения эндодонтического доступа в зубах не претерпели ни малейшего изменения.…”

Section: обзорыunclassified

Microinvasive endodontic access

Solovyova

Vinnichenko

2015

Stomat.

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Efficacy of ProTaper Retreatment System in Root Canals Filled with Gutta-Percha and Two Endodontic Sealers

Cited by 64 publications

References 16 publications

Effectiveness of rotary or manual techniques for removing a 6-year-old filling material

Effectiveness of rotary or manual techniques for removing a 6-year-old filling material

Effectiveness of rotatory and reciprocating movements in root canal filling material removal

Microinvasive endodontic access

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