Suboptimal Debridement Quality Produced by the Single-file F2 Protaper Technique in Oval-shaped Canals

De‐Deus, Gustavo; Barino, Bianca; Zamolyi, Renata Quintella; Souza, Erick Miranda; Junior, Albino Fonseca; Fidel, Sandra Rivera; Fidel, Rivail Antônio Sérgio

doi:10.1016/j.joen.2010.08.009

Cited by 121 publications

(148 citation statements)

References 17 publications

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“…All canals were prepared by the same operator using the ProTaper System up to the F2 instrument. 22 Irrigation was performed conventionally with 1 mL of 2.5% NaOCl (Asfer, São Caetano do Sul, Brazil) after using each instrument, by way of a 5-mL disposable syringe with 27-gauge needle (Endo Eze  Irrigator; Ultradent Products Inc., South Jordan, USA). Final irrigation was done with 5 mL of 2.5% NaOCl and 5 mL of 17% EDTA (Biodinâmica, Ibiporã, Brazil).…”

Section: Methodsmentioning

confidence: 99%

Efficacy of NiTi rotary instruments in removing calcium hydroxide dressing residues from root canal walls

et al. 2012

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The aim of this study was to evaluate the efficacy of three rotary instrument systems (K3, ProTaper and Twisted File) in removing calcium hydroxide residues from root canal walls. Thirty-four human mandibular incisors were instrumented with the ProTaper System up to the F2 instrument, irrigated with 2.5% NaOCl followed by 17% EDTA, and filled with a calcium hydroxide intracanal dressing. After 7 days, the calcium hydroxide dressing was removed using the following rotary instruments: G1 -NiTi size 25, 0.06 taper, of the K3 System; G2 -NiTi F2, of the ProTaper System; or G3 -NiTi size 25, 0.06 taper, of the Twisted File System. The teeth were longitudinally grooved on the buccal and lingual root surfaces, split along their long axis, and their apical and cervical canal thirds were evaluated by SEM (×1000). The images were scored and the data were statistically analyzed using the Kruskall Wallis test. None of the instruments removed the calcium hydroxide dressing completely, either in the apical or cervical thirds, and no significant differences were observed among the rotary instruments tested (p > 0.05).

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Section: Methodsmentioning

confidence: 99%

Efficacy of NiTi rotary instruments in removing calcium hydroxide dressing residues from root canal walls

et al. 2012

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“…As previously stated, it has been reported that cervical preflaring improves cleaning ability 24) . However, cervical preflaring may not be the only factor which determines apical cleaning capacity; for optimal results, it may be necessary to use the full conventional rotary system sequence, exactly as the manufacturer recommends, or even a single file, since that is what they are designed for 8) . It may not always be possible to clean the root canal efficiently, even when using a rotary system in full sequence, and at such times it may be necessary to employ hybrid instrumentation (rotary/manual) 25) .…”

Section: Discussionmentioning

confidence: 99%

“…It may not always be possible to clean the root canal efficiently, even when using a rotary system in full sequence, and at such times it may be necessary to employ hybrid instrumentation (rotary/manual) 25) . On the other hand, oval-shaped canal instrumentation tends to leave unprepared surfaces with remaining debris, demonstrating the influence of the original root canal shape on the debridement quality, regardless of the preparation technique used 8,19,26) . Instrument movement is as important as the preparation method.…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, recent studies have proposed protocols that recommend the use of a single file for root canal preparation 13,29) . Although the recent focus has been on the use of simplified techniques using only one file, no consensus has been reached on the comparative cleaning efficiency of each type of instrument 8,9,29) . The purpose of the present study was to compare the apical cleaning capabilities of single files from 3 different rotary systems in the presence or absence of prior cervical preparation based on a histological analysis.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Prior Cervical Enlargement on Apical Cleaning Using Single File

Leonardi

Schramm

Giovanini

et al. 2015

Bull. Tokyo Dent. Coll.

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The goal of this study was to compare the apical cleaning capabilities of single files from 3 different rotary systems in the presence or absence of prior cervical preparation based on a histological analysis. A total of 84 human single-rooted mandibular permanent incisors were divided into 6 groups (14 canals each). Cleaning and shaping was performed under the following protocols: Group I, F2 ProTaper at working length; Group II, SX ProTaper and F2 ProTaper; Group III, size 25, .06 taper Mtwo at working length; Group IV, SX ProTaper and size 25, .06 taper Mtwo; Group V, size 25, .06 taper BR3 BioRace at working length; and Group VI, SX ProTaper and size 25, .06 taper BR3 BioRace. After cleaning and shaping, the root canals were evaluated by histological analysis. The percentage of remaining debris was evaluated using a cross-hatched grid superimposed over each image. Data were assessed using the Shapiro-Wilk and ANOVA tests. Statistically significant differences were observed between groups (p=0.0001) with respect to amount of remaining debris; use of SX in conjunction with F2 ProTaper yielded a significantly lower mean percentage of debris. It was concluded that cleaning ability improves when root canal preparation with F2 ProTaper is complemented by prior cervical enlargement.

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“…This was shown to be as effective at cleaning around root canals as the full ProTaper system, 12 and to extrude similar amounts of apical debris. 13 As a result of this paper there has been a re-emergence of reciprocation and development of single file NiTi preparation systems.…”

Section: Reciprocationmentioning

confidence: 99%

Rotation or reciprocation: a contemporary look at NiTi instruments?

Prichard

2012

Br Dent J

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Suboptimal Debridement Quality Produced by the Single-file F2 Protaper Technique in Oval-shaped Canals

Cited by 121 publications

References 17 publications

Efficacy of NiTi rotary instruments in removing calcium hydroxide dressing residues from root canal walls

Efficacy of NiTi rotary instruments in removing calcium hydroxide dressing residues from root canal walls

Influence of Prior Cervical Enlargement on Apical Cleaning Using Single File

Rotation or reciprocation: a contemporary look at NiTi instruments?

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