Mechanical reduction of the intracanal <i>Enterococcus faecalis</i> population by Hyflex <scp>CM</scp>, K3<scp>XF</scp>, ProTaper Next, and two manual instrument systems: an <i>in vitro</i> comparative study

Tewari, Rajendra Kumar; Ali, Shamshad; Mishra, Surendra Kumar; Kumar, Ashok; Andrabi, Syed Mukhtar-Un-Nisar; Zoya, Asma; Alam, Sharique

doi:10.1111/jicd.12136

Cited by 21 publications

(29 citation statements)

References 31 publications

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“…Both ProTaper Next and Twisted File promoted a higher bacterial reduction than the ProTaper Universal and manual technique. The result found for the ProTaper Next is in accordance with a study by Tewari et al (11) and Krokidis at al. (20), who also observed a better performance of this system compared to other automated systems and manual technique.…”

Section: Discussionsupporting

confidence: 92%

“…The plate culture method was used in this study because of its simplicity and efficiency (5,7,(8)(9)(10)(11)(13)(14)(15)(16)(17)(18)(19). Molecular methods has been highlighted because of their high sensibility to detect microorganisms, but such a feature would not be necessary in this study as there was no total absence of bacterial growth in the collection.…”

Section: Discussionmentioning

confidence: 99%

“…Studies have demonstrated that the chemomechanical preparation using irrigating agents significantly reduce the bacterial number in the root canal (7)(8), but the mechanical action of instruments accounts for more than 95% of the bacterial reduction (9)(10)(11). However, different instrument designs can affect the root canal preparation (12).…”

Section: Introductionmentioning

confidence: 99%

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Instrument Design May Influence Bacterial Reduction During Root Canal Preparation

et al. 2017

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The aim of this study was to evaluate the bacterial reduction promoted by ProTaper Next and Twisted File by comparing to ProTaper Universal and manual technique. Sixty distobuccal root canals of maxillary molars sterilized with ethylene oxide were contaminated with Enterococcus faecalis broth culture. After incubation for 21 days, bacterial samples were collected and cultured on m-Enterococcus agar plates. The root canals were divided into 4 groups, according to the system used for instrumentation: ProTaper Next, Twisted File, ProTaper Universal, and crown down manual technique. Other 8 uncontaminated root canals were control asepsis. Bacterial samples were collected immediately and 7 days after instrumentation. The bacterial reduction was calculated and then made intragroup analysis by paired t-test and intergroup analysis by ANOVA and Tukey tests, all at 5% significance. All techniques significantly reduced the bacterial number in the root canal (p<0.05). ProTaper Next and Twisted File resulted in more bacterial reduction than ProTaper Universal and manual technique (p<0.05). ProTaper Next and Twisted File were similar (p>0.05). It can be concluded that ProTaper Next and Twisted File promote a higher bacterial reduction than Protaper Universal and manual technique.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Instrument Design May Influence Bacterial Reduction During Root Canal Preparation

et al. 2017

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“…The importance to evaluate the tip size of this instrument is based on the current tendency towards single-file systems. Premolars have been used in several endodontics studies (5,6,14), but it is necessary instruments with diameters larger than tip 25. Moreover, molar is a tooth which requires the greatest amount of endodontic treatment (15).…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the WaveOne Gold and One Shape New Generation in Reducing Enterococcus faecalis from Root Canal

et al. 2018

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The aim of this study was to evaluate the WaveOne Gold and One Shape New Generation systems regarding the bacterial removal from root canals infected with Enterococcus faecalis by comparing them to the conventional WaveOne and One Shape systems. Forty-eight distobuccal root canals of maxillary molars sterilized with ethylene oxide were infected with E. faecalis for 21 days, and then root canal initial bacterial sample was collected with paper cones and plated on M-enterococcus agar. The specimens were randomly divided into 4 groups according to the instrumentation: WaveOne Gold, One Shape New Generation, WaveOne and One Shape. After instrumentation, samples were collected with use of scraping and paper cones at immediate and 7 days after instrumentation. The bacterial reduction was calculated and then made intragroup analysis by Friedman test and intergroup analysis by Kruskal-Wallis with Dunn's post-hoc test, all at 5% significance. All techniques significantly reduced the number of bacteria in the root canal (p<0.05). WaveOne Gold and One Shape New Generation promoted higher bacterial reduction than WaveOne and One Shape systems (p<0.05), but no significant difference was found between WaveOne Gold and One Shape New Generation or between WaveOne and One Shape (p>0.05). Novel single-file systems promote better bacterial removal than the conventional single-file systems.

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“…In this study each root canal was inoculated with 0.5 ml of E. faecalis, with density adjusted to the turbidity of 0.5 McFarland standard (1.5 x 10 8 bacteria/ml) according to Blanscet et al, (17) , this was followed by incubation period 48 hrs.to allow deeper penetration of E. Faecalis into dentinal tubules according to Tewari et al (18) .…”

Section: Discussionmentioning

confidence: 99%

A Comparative Study of the Antibacterial Efficacy of two Natural Irrigating Solutions with Two Different Root Canal Sealers on E-feacalis

et al. 2017

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This study aimed to: evaluate the antibacterial efficacy of two natural irrigating solutions (Green Tea, and Propolis) with two different root canal sealers (AH Plus sealer, and Total Fill BC Sealer) against E. faecalis. Methods: One hundred single rooted teeth were selected. All root canals were prepared manually to #50 file. Finally the teeth were sterilized by gamma rays. Each root canal was inoculated with 0.5 ml of E.faecalis. Specimens were divided randomly into two main groups (50 specimens each) according to the irrigating solution; A1 (Green Tea), and A2 (Propolis). Each main group was divided into two subgroups with (25 specimens each) according to the type of sealer used B1 (AH Plus sealer), and B2 (TotalFill BC Sealer). The bacterial sampling counting process was done three times throughout the study. Five specimens from each subgroup were examined by SEM for presence or absence of E. faecalis. Results:The highest mean value of bacterial count was found in (Green tea) (6.50x10x10 ± 1.29x10x10) while the least mean value of bacterial count was found in (Propolis) (with less antibacterial effect 2x10x10 ± 1.33x10x10) with higher antibacterial effect. The highest mean value of bacterial count was found in (AH Plus Sealer) (5.40x10x10 ± 2.44x10x10) with less antibacterial effect while the least mean value of bacterial count was found in (TotalFill BC Sealer) (3.10x10x10 ± 1.54 x10x10) with higher antibacterial effect. Conclusions: Propolis is an effective intracanal irrigant in eradicating E.faecalis. On other hand TotalFill BC Sealer is more effective in reducing E. faecalis.

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Mechanical reduction of the intracanal Enterococcus faecalis population by Hyflex CM, K3XF, ProTaper Next, and two manual instrument systems: an in vitro comparative study

Abstract: Canal instrumentation by all the file systems significantly reduced the intracanal Enterococcus faecalis counts. ProTaper Next was found to be most effective in reducing the number of bacteria than other rotary or hand instruments.

Cited by 21 publications

References 31 publications

Instrument Design May Influence Bacterial Reduction During Root Canal Preparation

Instrument Design May Influence Bacterial Reduction During Root Canal Preparation

Evaluation of the WaveOne Gold and One Shape New Generation in Reducing Enterococcus faecalis from Root Canal

A Comparative Study of the Antibacterial Efficacy of two Natural Irrigating Solutions with Two Different Root Canal Sealers on E-feacalis

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