Apical Extrusion of Debris in Flat-oval Root Canals after Using Different Instrumentation Systems

Kirchhoff, Alison Luís; Fariniuk, Luiz Fernando; Mello, Isabel

doi:10.1016/j.joen.2014.09.023

Cited by 78 publications

(83 citation statements)

References 33 publications

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“…Ozsu et al (8) prepared teeth up to X4 and irrigated with 31 gauge double side-port needle, while Koçak et al (6) prepared teeth up to X3, but there was no information regarding needle type in latter one. In the present study, the weights of apically extruded debris of teeth prepared up to X3 and irrigated with two different needles were nearly similar and took place in the previously reported weight's range (4)(5)(6)8,9).…”

Section: Discussionsupporting

confidence: 75%

“…Teeth where the tip of the file extruded beyond the apical foramen were excluded (3,4). A similar experimental model described previously was used for determining extruded debris (3)(4)(5)(6)(7)(8)(9)20). Stoppers were separated from the Eppendorf tubes.…”

Section: Methodsmentioning

confidence: 99%

“…Irrigants, dentin chips, pulp tissue and microorganisms may be extruded into the periradicular tissues during this step, and these extruded materials may cause postoperative pain and complications (1,2). Previous studies have reported that all preparation techniques and instruments are associated with some debris extrusion apically (3)(4)(5)(6)(7)(8)(9).…”

Section: Introductionmentioning

confidence: 99%

“…There is no current study evaluating the amount of apically extruded debris with OneShape Apical. There is several studies reported apical extrusion with PTN, without combining with different needle types (4)(5)(6)8,9). The null hypothesis was that there are no differences in the amount of apically extruded debris between: (i) file systems and (ii) needle designs.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Different Rotary Files Combined with Different Irrigation Needles on Apically Extruded Debris

2015

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<p>The aim of this study was to compare the apically extruded debris associated with ProTaper Next and OneShape Apical files using two different irrigation needles, open-ended and closed-ended (Max-I-Probe). Forty-eight mandibular premolars were assigned to four groups (n=12) as follows: Group PTN-SN: Root canal was prepared with ProTaper Next (PTN) and irrigated with open-ended standard needle; Group PTN-MP: Root canal was prepared with PTN and irrigated with Max-I-Probe; Group OSA-SN: Root canal was prepared with OneShape Apical (OSA) and irrigated with open-ended needle; Group OSA-MP: Root canal was prepared with OSA and irrigated with Max-I-Probe. Debris extruded during instrumentation was collected into pre-weighed Eppendorf tubes. After storage in an incubator at 70 °C for 5 days, the Eppendorf tubes were weighed to obtain the final weight with extruded debris. The difference between pre-and post-debris weights was calculated and statistical analysis was performed using Kruskal-Wallis and Mann-Whitney U tests (p<0.05). No statistically significant difference was observed between files and needles regarding amount of apically extruded debris (p>0.05). OneShape Apical and ProTaper Next resulted in extrusion of debris beyond the apical foramen, regardless of needle tip.</p>

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Section: Discussionsupporting

confidence: 75%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Different Rotary Files Combined with Different Irrigation Needles on Apically Extruded Debris

2015

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“…Probably, differences in number of files and in instruments configuration, cross-section, cutting blade design, taper, tip type, alloy, flexibility, kinematics, and cutting efficacy influenced this outcome (26,30). Dincer et al (10) also found more apical debris extrusion when HF were used in comparison with reciprocating NiTi instruments, which might be explained by differences in instruments action (9): the push-pull action performed with HF to advance in apical direction may have increased the risk of pumping the debris through the foramen, while the combined reciprocating motion with crown-down pressure performed with NiTi instruments could have reduced the risk of extrusion.…”

Section: Discussionmentioning

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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Scientific and Educational Aspects of Reciprocating Movement

Souza

Silva

Deus

et al. 2021

Shaping for Cleaning the Root Canals

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Apical Extrusion of Debris in Flat-oval Root Canals after Using Different Instrumentation Systems

Cited by 78 publications

References 33 publications

Effects of Different Rotary Files Combined with Different Irrigation Needles on Apically Extruded Debris

Effects of Different Rotary Files Combined with Different Irrigation Needles on Apically Extruded Debris

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

Scientific and Educational Aspects of Reciprocating Movement

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