A comparison of weights of debris extruded apically by conventional filing and canal master techniques

Myers, Garry L.; Montgomery, Steve

doi:10.1016/s0099-2399(06)81866-2

Cited by 341 publications

(424 citation statements)

References 18 publications

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“…The results were consistent with previous studies, which demonstrated that no method could completely prevent debris extrusion. 14,16,17,18 Also, the results of the present study showed no significant differences in the amounts of debris and irrigant extruded between the single-file systems and the full-sequence rotary system. However, the reciprocating single-file system extruded more debris than the rotary instrument.…”

Section: Discussionmentioning

confidence: 45%

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Assessment of apically extruded debris and irrigant produced by different nickel-titanium instrument systems

et al. 2014

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The aim of this study was to evaluate the preparation time and the amounts of apically extruded debris and irrigant using different nickeltitanium instrumentation systems. Forty-five extracted single-rooted mandibular premolar teeth were selected and divided into three groups. The root canals were instrumented according to the manufacturers' instructions, using a reciprocating single-file system, a single-file rotary system and a multiple-file rotary system. Bidistilled water was used as the irrigant solution. The apically extruded debris and irrigant were collected into preweighed Eppendorf tubes. The amounts of extruded debris and irrigant were assessed with a precision micro-balance. The Eppendorf tubes were incubated at 37°C for 15 days. After the incubation period, they were weighed again to assess the debris extrusion. The time required to prepare the canals was also recorded. The results were statistically analyzed using MANOVA and Bonferroni's adjustment. Considering the apically extruded debris and irrigant, there were no statistically significant differences among the groups (p > 0.05). The Reciproc group produced the highest debris (0.000632 ± 0.000162 gr) and irrigant (0.844587 ± 0.437814 ml) extrusion values. While the least extruded debris was observed with OneShape (0,000431 ± 0,000171 gr), the least extruded irrigant was observed with ProTaper system (0.564147 ± 0.370596 ml). Instrumentation was faster using the Reciproc than the other two instruments (70.27 ± 13.38 s) (p < 0.05). All of the instrumentation systems used in this study produced apical debris and irrigant extrusion. The reciprocating single-file system tended to produce more debris and irrigant extrusion, compared with the rotary systems. Considering the preparation time, the single-file systems appeared to be advantageous due to their working time.

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Section: Discussionmentioning

confidence: 45%

“…17,20 In previous studies, different techniques were used to measure the apically extruded debris and irrigant. 14,21,22 In the current study, the generally accepted method of Myers and Montgomery, 14 which is more standardized and repeatable than other methods, 11,12 was used to collect the intracanal materials.…”

Section: Discussionmentioning

confidence: 99%

Assessment of apically extruded debris and irrigant produced by different nickel-titanium instrument systems

et al. 2014

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“…The method for debris collection was adapted from previous studies (8,13,21). Briefly, Eppendorf tubes (1,5 mL) were pre-weighted 3 times in a 10 -5 g precision analytical microbalance (Sartorius AG), and the mean values were recorded.…”

Section: Debris Extrusion Collection and Filling Removal Proceduresmentioning

confidence: 99%

“…The system that has been adopted by most studies was described by Myers and Montgomery (13), which consists of a rubber stopper, a glass vial and a flask made of glass. The assembly where the tooth is placed should be secured to prevent movement, and the flask should be shielded using a rubber dam so that the operator is not able to see the debris, simulating a clinical working environment (14).…”

Section: Introductionmentioning

confidence: 99%

Apically extruded debris in filling removal of curved canals using 3 NiTi systems and hand files

Delai¹,

Boijink²,

Hoppe³

et al. 2018

Braz. Dent. J.

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The aim of this study was to assess the amount of apically extruded debris during filling removal with WaveOne Gold (WOG), ProTaper Universal Retreatment (PTR), D-RaCe Retreatment (DRR) or hand files (HF), to compare the working time during filling removal, and to describe failures of NiTi instruments. Forty mesiobuccal roots of maxillary first molars were prepared with WOG Primary, obturated and divided into 4 groups (n=10), according to the instruments used: WOG, PTR, DRR or HF. Distilled water was used as irrigant and the extruded debris were collected in Eppendorf tubes and dried. The amount of extruded debris was determined by subtracting the final from the initial weight. The time of filling removal for each canal was recorded and the instruments used were analyzed pre and post-operatively by SEM. Kruskal-Wallis and Dunn's test analyzed extruded debris data and ANOVA, followed by Tukey's test, compared the working time data (α=0.05). Instrument deformation and fracture were described. WOG produced significantly less debris compared with HF and DRR (p<0.05), and similar to PTR (p>0.05). HF, PTR and DRR showed no significant difference (p>0.05). Working time in HF group was significantly higher than others (p<0.05). SEM analyses showed, from the 18 instruments evaluated, 3 fractures and 10 deformations. All instruments tested caused debris extrusion. WOG was associated with less extrusion than DRR and HF. Filling removal with HF was slower than with the other instruments. All NiTi systems presented fracture and deformation.

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“…7 In this study, the pulpal tissues were removed before instrumentation to make sure that the debris extruded was dentinal shavings and not pulpal remnants. Decoronation of teeth after working length determination and before instrumentation also confirmed that an easy reference point was established.…”

Section: Discussionmentioning

confidence: 99%

Comparative evaluation of apical extrusion of debris and irrigant with three rotary instruments using crown down technique – An in vitro study

Jindal

Singh

Gupta³

et al. 2012

Journal of Oral Biology and Craniofacial Research

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Aims and objective: The purpose of this study was to evaluate and compare the apical extrusion of debris and irrigant using various rotary instruments with crown down technique in the instrumentation of root canals.Material and Method: Thirty freshly extracted human permanent straight rooted mandibular premolars with minimum root curvature of 0e10 were divided in three groups with 10 teeth in each group. Each group was instrumented using one of the three rotary instrumentation systems: Rotary Hero shapers, Rotary ProTaper and Rotary Mtwo. One ml of sterile water was used as an irrigant after using each instrument. Debris extruded was collected in pre weighed glass vials and the extruded irrigant was measured quantitatively by Myers and Montgomery method and was later evaporated. The weight of the dry extruded debris was calculated by comparing the pre and post instrumentation weight of glass vials for each group.Statistical analysis: Statistical analysis was done by using by a KruskaleWallis One-way ANOVA test.Results: Statistical analysis showed that all the rotary instruments used in this study caused apical extrusion of debris and irrigant. A Statistically significant difference was observed with Rotary ProTaper and Rotary Mtwo groups when compared with Rotary Hero shapers. But no significant difference was observed between Rotary ProTaper and Rotary Mtwo groups. Conclusion:After instrumentation with different rotary instruments, Hero shapers showed a less apical extrusion of debris and irrigant.

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A comparison of weights of debris extruded apically by conventional filing and canal master techniques

Cited by 341 publications

References 18 publications

Assessment of apically extruded debris and irrigant produced by different nickel-titanium instrument systems

Assessment of apically extruded debris and irrigant produced by different nickel-titanium instrument systems

Apically extruded debris in filling removal of curved canals using 3 NiTi systems and hand files

Comparative evaluation of apical extrusion of debris and irrigant with three rotary instruments using crown down technique – An in vitro study

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