Evaluation of Apically Extruded Bacteria Associated with Different Nickel-Titanium Systems

Türker, Sevinç Aktemur; Uzunoğlu, Emel; Aslan, Mehtap Hülya

doi:10.1016/j.joen.2015.02.009

Cited by 15 publications

(25 citation statements)

References 19 publications

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“…Our results are in consonance with numerous previous studies showing that the frequency of extrusion of debris is very high in vitro irrespective of the instrument or technique used . While it remains not possible to evaluate apical extrusion of debris and bacteria in vivo , clinicians should rely on the techniques/instruments/strategies that promote lesser amounts of extrusion in laboratory studies.…”

Section: Discussionsupporting

confidence: 91%

“…Root canal preparation techniques have been shown to cause apical extrusion of debris in the large majority of cases, regardless of the instrument type, its activation mode (hand or engine‐driven), or movement (reciprocating or continuous rotation). However, the amount of extruded debris varies among the different techniques .…”

Section: Introductionmentioning

confidence: 99%

“…There are numerous laboratory studies evaluating the prevalence and amount of debris or bacteria extruded after chemomechanical preparation . Most of them, however, are plagued by the fact that no attempt was made to simulate the resistance to extrusion posed by the periradicular tissues.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Quantitative analysis of apically extruded bacteria following preparation of curved canals with three systems

et al. 2018

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This study compared the amount of apically extruded bacteria following preparation of curved root canals using two continuously rotating multifile and one reciprocating single-file systems. Mesiobuccal canals from maxillary molars were contaminated with Enterococcus faecalis and divided into three groups according to the instrumentation system: Reciproc (R25 instrument, 25/.08), BT-RaCe (10/.06, 35/.00 and 35/.04), and Mtwo (25/.06, 30/.05 and 35/.04). Apically extruded material was collected by a customized apparatus with 1.5% agarose gel covering the root apex to simulate the periradicular tissues. The extruded material was extracted from the gel and subjected to bacteriological culture for bacterial quantification. The three systems showed a high frequency of bacterial extrusion (>70%). There were no statistically significant differences in the counts of extruded bacteria between groups (P > 0.05). The incidence and amount of apical bacterial extrusion were similar between the three systems. The customized apparatus was effective in collecting apically extruded bacteria.

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

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Quantitative analysis of apically extruded bacteria following preparation of curved canals with three systems

et al. 2018

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“…Resultly, TFA instruments caused a higher amount of bacterial extrusion beyond the foramen. The aforementioned studies (14)(15)(16) demonstrated similar results as present study. Increasing cutting ability of rotary instruments is usually associated with increasing cleaning efficacy, however it may also enhance debris transportation towards the apex when used in combination with a reciprocal movement (17).…”

Section: Discussionsupporting

confidence: 90%

Apical extrusion of intracanal biofilm using ProTaper Gold, WaveOne Gold,Twisted File Adaptive, OneShape New Generation and K3XF

Zan¹,

Tunç²,

Hubbezoğlu³

et al. 2017

Eur Endod J

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Objective: To evaluate the bacterial extrusion during instrumentation with different nickel titanium (NiTi) engine-driven instruments. Methods: Ninety extracted single-canal human mandibular incisor teeth were inoculated with Enterococcus faecalis to obtain biofilm formation and were randomly divided to 6 groups (n=15). One group served as the control and was not instrumented; the other groups were prepared with ProTaper Gold (PTG; Dentsply Maillefer, Ballaigues, Switzerland), WaveOne Gold (WOG; Dentsply Maillefer), Twisted File Adaptive (TFA; SybronEndo, Orange, CA, USA), One Shape New Generation (OSNG; MicroMega, Besancon, France), and K3XF (SybronEndo) instruments. Bacteria extruded beyond the apical foramen were quantified in colony-forming units per milliliter. The number of colony-forming units in the remaining biofilm was determined for each sample. Data were analyzed using the one-way analysis of variance (ANOVA) and Tukey post-hoc tests. Results: All NiTi instruments resulted in different quantities of bacterial extrusion. The TFA group caused most bacterial extrusion (p<0.05). The PTG and WOG groups caused less bacterial extrusion than the OSNG and K3XF groups (p<0.05), but there was no statistically significant difference between the PTG and WOG groups (p>0.05). Conclusion: PTG and WOG are preferable system in terms of successful endodontic treatments. The amount of bacterial extrusion is associated with the metallurgy and design of the instrument used.

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“…8 A 2015 study compared the amount of apically extruded bacteria following the use of OneShape-, PTN-and Twisted File (TF) (TF; SybronEndo, Orange, CA) systems. 10 The study concluded that all instrumentation systems extruded bacteria beyond the foramen but that the OneShape system extruded fewer bacteria compared with the TF-and PTN systems.…”

mentioning

confidence: 97%

Root canal preparation: A literature review and clinical case reports of available materials and techniques

et al. 2019

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Mechanical enlargement and shaping of complex endodontic root canal systems to facilitate disinfection remain the main foci of endodontic treatment. A large variety of root canal shaping and preparation systems with different design features and advantages are available to the clinician. Although there are many studies in the literature comparing these different systems, the aim of this paper is to provide the clinician with an overview of some of the available systems as well as their clinical applications. Shaping and enlargement of root canal systems to facilitate irrigation, disinfection and proper obturation are the most important aspects in endodontic treatment. 1 Maintaining the original canal anatomy and preservation of dentine thickness of a root canal system is critical to the successful shaping of a root canal. Procedural errors like instrument fractures, ledge formation, canal zipping, strip perforations, apical perforations, elbow formations and apical blockage can possibly lead to endodontic failure as a result of incomplete debridement. 2 Most of these errors can be contributed to the stiffness of stainless steel instruments. 3

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Evaluation of Apically Extruded Bacteria Associated with Different Nickel-Titanium Systems

Cited by 15 publications

References 19 publications

Quantitative analysis of apically extruded bacteria following preparation of curved canals with three systems

Quantitative analysis of apically extruded bacteria following preparation of curved canals with three systems

Apical extrusion of intracanal biofilm using ProTaper Gold, WaveOne Gold,Twisted File Adaptive, OneShape New Generation and K3XF

Root canal preparation: A literature review and clinical case reports of available materials and techniques

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