The effect of four different irrigation systems in the removal of a root canal sealer

Grischke, Jasmin; Müller-Heine, A.; Hülsmann, Michael

doi:10.1007/s00784-013-1161-6

Cited by 43 publications

(56 citation statements)

References 39 publications

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“…However, according to the results, this ability of PUI did not allow a greater amount of gutta-percha and sealer to be removed, as compared with the control group. This result differs from that found by Grischke et al 16 . These authors noted that the cleansing effect of PUI with NaOCl was superior to all the other irrigation techniques in removing root canal sealer.…”

Section: Discussioncontrasting

confidence: 99%

“…PUI has the potential to remove dentinal debris, organic tissue, and calcium hydroxide from inaccessible root canal areas [13][14][15] . Recently, Grischke et al 16 evaluated the use of ultrasound in the removal of a root canal sealer both from the surface and from simulated irregularities of root canals. The authors found that the ultrasonic irrigation protocol was superior to the other techniques investigated in the removal of sealer from the root canal surface during endodontic retreatment.…”

Section: Introductionmentioning

confidence: 99%

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Efficacy of passive ultrasonic irrigation in removing root filling material during endodontic retreatment

Michelon

Frighetto

Lang

et al. 2016

Rev. odontol. UNESP

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ResumoIntrodução: O retratamento endodôntico requer a remoção de todos os materiais obturadores para a limpeza, o preparo e a obturação subsequentes do canal radicular. Objetivo: Avaliar a eficácia da Irrigação Ultrassônica Passiva (IUP) na remoção de material obturador residual após a desobturação com sistema rotatório de níquel-titânio. Material e método: Dezoito raízes mesiais de molar inferior com istmos foram preparadas e obturadas. A obturação foi removida com o sistema rotatório ProTaper Retratamento e limas manuais tipo K. Os espécimes foram randomizados em dois grupos (n = 9), ambos irrigados com NaOCl a 2,5% e EDTA a 17%. No grupo Convencional, a seringa de irrigação foi utilizada. No grupo da IUP, a técnica da IUP foi usada. As raízes foram seccionadas longitudinalmente e avaliadas em estereomicroscópio. O teste t de Student foi usado para comparar os grupos e o modelo linear geral foi usado para comparar os terços cervical, médio e apical dentro de cada grupo, no que diz respeito a porcentagem de material obturador residual. Resultado: Não houve diferença estatisticamente significante entre os grupos, independentemente do terço do canal radicular analisado (P > 0.05). No grupo da IUP, o terço apical mostrou uma porcentagem significativamente mais alta de material obturador residual quando comparado aos terços cervical (P = 0.038) e médio (P = 0.029). Conclusão: A IUP não foi mais eficaz do que a técnica convencional na remoção de material obturador remanescente durante o retratamento endodôntico em canais radiculares com anatomia complexa.Descritores: Irrigação; retratamento; canal radicular; ultrassom. AbstractIntroduction: The aim of endodontic retreatment is to remove the previous root filling materials completely to allow for the subsequent steps of cleaning, canal shaping and filling replacement. Objective: To evaluate the efficacy of passive ultrasonic irrigation (PUI) in the removal of residual root filling material after removing the bulk of the root filling with nickel-titanium rotary instruments. Material and method: Eighteen mesial isthmus-containing roots of human mandibular molars were prepared and filled. The root canal filling was removed with the ProTaper Retreatment system and K-files. The specimens were randomized into 2 groups (n = 9), both irrigated with 2.5% NaOCl and 17% EDTA. In the conventional group, an irrigation syringe was used. In the PUI group, the PUI technique was used. The roots were sectioned longitudinally and evaluated under stereomicroscopy. Student's t test was used to compare groups and the general linear model was used to compare the apical, cervical, and middle root thirds within each group, in regard to the percentages of remaining residual filling material. Result: There was no statistically significant intergroup difference, irrespective of which root third was evaluated (P > 0.05). In the PUI group, the apical third showed a significantly higher percentage of residual filling material, in comparison with the cervical (P = 0.038) and middle (P = 0.029) thir...

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Section: Discussioncontrasting

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Efficacy of passive ultrasonic irrigation in removing root filling material during endodontic retreatment

Michelon

Frighetto

Lang

et al. 2016

Rev. odontol. UNESP

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“…Recent studies have evaluated different retreatment systems without solvent to prevent the interference of a thin layer of gutta-percha which forms and adheres to the root canal walls (16,20,31). Grischke et al (10) found that PUI can remove AH Plus root canal sealer from the root canal surface of straight canals with simulated irregularities better than syringe irrigation. The presence of these irregularities may increase the influence of PUI on sealer removal.…”

Section: Discussionmentioning

confidence: 99%

“…manual files, rotary and reciprocating instruments and sonic or ultrasonic irrigation (6)(7)(8)(9)(10)(11). However, all retreatment techniques have been found to leave some residual gutta-percha and sealer on canal walls after re-instrumentation (12).…”

Section: Introductionmentioning

confidence: 99%

Influence of Passive Ultrasonic Irrigation on the Removal of Root Canal Filling Material in Straight Root Canals

Bueno¹,

Rios²,

Coelho³

et al. 2017

Eur Endod J

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Objective: This study evaluates the efficacy of passive ultrasonic irrigation (PUI) in removing root canal filling material from endodontically treated teeth after using one of two reciprocating systems, Reciproc (VDW, Munich, Germany) or WaveOne (Dentsply Maillefer, Ballaigues, Switzerland), or one nickel-titanium (NiTi) rotary system, ProTaper Universal Retreatment (Dentsply Maillefer). Methods: One hundred and twenty straight root canals of extracted human maxillary incisors were instrumented and then obturated. The specimens were divided into six groups (n=20) as follows: Group R, Reciproc R25 instrument without PUI; Group W, WaveOne Primary instrument without PUI; Group PT, ProTaper Universal Retreatment system without PUI; Group R-PUI, Reciproc R25 with PUI; Group W-PUI, WaveOne Primary with PUI and Group PT-PUI, ProTaper Universal Retreatment system with PUI. After removing the filling material, the teeth were cleaved longitudinally and photographed. The total canal space and remaining material were quantified with the aid of an imaging software tool. The Kruskal-Wallis test was used to identify significant differences between the groups. Results: No statistically significant differences (P>0.05) in residual filling material were observed between the groups. Conclusion: The use of PUI did not improve the removal of filling material from the root canals, regardless of the previously used instrumentation system.

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“…However, within the consideration of the currently available re-treatment studies, the results have shown the remnant filling materials to be remained through the canal walls even if solvents or rotary/hand instruments have been applied. [16][17][18][19] Therefore, the re-treatment protocol has to be supported with some additional irrigation systems, medicaments and/or irrigants to obtain total remove of root filling material and to reach all the points in root canals regarding uninstrumented areas which depends on the complex anatomy.…”

Section: Discussionmentioning

confidence: 99%

Efficacy of Ethylenediamine Tetraacetic Acid and Calcium Hydroxide in the Removal of Root Canal Filling During Retreatment

Güven¹

2017

Cumhuriyet Dental Journal

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A B S T R A C TObjective: To compare the effect of Ethylenediamine tetraacetic acid (EDTA) and calcium hydroxide [Ca(OH)2] in the removal of root canal filling material during retreatment procedure.Methodology: Eighty extracted, single-rooted human teeth were used. Root canals were shaped with a crown-down technique using Ni-Ti rotary instruments (ProTaper, Dentsply Maillefer, Switzerland) and filled with a cold lateral condensation method. AH Plus was used as a sealer. After filling, the teeth were divided into 4 groups and root fillings were removed by ProTaper Universal rotary retreatment system. In each group different irrigation and disinfection protocols were followed; Group I. Sodium hypochlorite (5.25%) + EDTA (17%-1 min.) Group II. Sodium hypochlorite (5.25%) Group III. Sodium hypochlorite (5.25%) + Ca (OH)2 Group IV. Sodium hypochlorite (5.25%) + Ca(OH)2 + EDTA (17%-1 min.). Irrigation with 17% EDTA was performed only before D3-Retreatment instrumentation in all groups. AutoCAD system was used to detect the amount of residual root canal filling material. The results were statistically analyzed by SPSS (Statistical Package for Social Sciences) for Windows 15.0, one way ANOVA and Tukey's HSD tests. The significance was evaluated at the level of p<0.05. Results:The amount of the remnant filling material in the root canals retreated in Group I was less than the amount of the material in Group II (p<0.01) and Group III (p<0.05). There was no significant difference observed between the other groups in terms of the quantity of the remnant root canal filling materials (p>0.05).Conclusions: Irrigating the canals with EDTA enhanced the removal of root canal filling during retreatment. However, disinfecting the canals with Ca(OH)2 had no effect in the removal of filling material.

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The effect of four different irrigation systems in the removal of a root canal sealer

Abstract: Incomplete removal of root canal sealer during re-treatment may cause treatment failure. Passive Ultrasonic irrigation seems to be the most effective system to remove sealer from a root canal.

Cited by 43 publications

References 39 publications

Efficacy of passive ultrasonic irrigation in removing root filling material during endodontic retreatment

Efficacy of passive ultrasonic irrigation in removing root filling material during endodontic retreatment

Influence of Passive Ultrasonic Irrigation on the Removal of Root Canal Filling Material in Straight Root Canals

Efficacy of Ethylenediamine Tetraacetic Acid and Calcium Hydroxide in the Removal of Root Canal Filling During Retreatment

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