Efficacy of low concentrations of sodium hypochlorite and low‐powered Er,Cr:<scp>YSGG</scp> laser activated irrigation against an <i>Enterococcus faecalis</i> biofilm

Christo, Jonathan; Zilm, Peter; Sullivan, Thomas; Cathro, Peter

doi:10.1111/iej.12447

Cited by 45 publications

(53 citation statements)

References 47 publications

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“…As the agitation of irrigating solutions is used in endodontics to enhance physical and chemical changes in the ultrastructure of the root dentin, higher retention of filling materials was expected. Previous studies have already evaluated the effects of laser-activated irrigation (LAI) on root dentin microhardness (14), smear layer removal (9), dentinal debris removal (11), disinfection (12), and dentin roughness (14). However, there are divergent results on the agitation solution to the filling material retention to root canal walls.…”

Section: Discussionmentioning

confidence: 99%

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1064-nm Nd:YAG and 980-nm Diode Laser EDTA Agitation on the Retention of an Epoxy-Based Sealer to Root Dentin

et al. 2016

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Root canal irrigants are used to minimize the negative effects of smear layer on endodontic sealer retention. The aim of this study was to evaluate the efficacy of agitation of 17% ethylenediaminetetraacetic acid (EDTA) with ultrasonic, 1064-nm Nd:YAG and 980-nm diode laser on the retention of an epoxy-based sealer to the root canal walls. Forty singlerooted bovine teeth were instrumented with ProTaper rotary system and divided into four groups according to the final irrigation protocol (n = 10): (1) 17% EDTA (control); (2) 17% EDTA with 50-s ultrasonic agitation; (3) 17% EDTA with 50-s diode laser (2-W) agitation; and (4) 17% EDTA with 50-s Nd:YAG (1.5-W) laser agitation. After endodontic filling with gutta-percha F5 master cone and Sealer 26, the roots were sectioned at the cervical, middle, and apical root thirds to obtain 1.5-mm slices. Push-out tests were performed using a universal testing machine at a 1 mm/min crosshead speed. Data were analyzed using two-way ANOVA and Tukey's tests (α=0.05). Apical root thirds had significant higher retention values than cervical and middle thirds (p < 0.05). EDTA with 1064-nm Nd:YAG or 980-nm diode laser presented the highest retention values and was significantly different from EDTA with ultrasonic agitation and EDTA only (p < 0.05). Adhesive failures were predominant to EDTA only group. Mixed failures were predominant to all agitation groups. 1064-nm Nd:YAG and 980-nm diode laser EDTA agitation enhanced the retention of the epoxy-based sealer to the root canal walls compared with that due to EDTA only or EDTA with ultrasonic agitation.

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Section: Discussionmentioning

confidence: 99%

“…Laser irradiation has already been evaluated on root dentin smear layer and debri removal (9,11), root canal system disinfection (12), and the root fracture resistance (13). Recently, the 1064-nm Nd:YAG and 980-nm diode laser EDTA agitation were evaluated considering the microhardness and roughness alteration.…”

Section: Introductionmentioning

confidence: 99%

1064-nm Nd:YAG and 980-nm Diode Laser EDTA Agitation on the Retention of an Epoxy-Based Sealer to Root Dentin

et al. 2016

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“…Regarding the irrigating solutions, it is well known that NaOCl appears to be the most employed solution due to its bactericidal activity (4,5,7,8), excellent lubrication (2), ability to dissolve organic components (1,6), bleaching capacity and low surface tension (1,2). However, adverse effects of NaOCl irrigation on dentin's mechanical properties (3,10,11,13,19) have been reported, including decrease of microhardness (10), flexural strength (11) and elastic modulus (3).…”

Section: Discussionmentioning

confidence: 99%

“…Ideally, an irrigating solution should promote debridement, lubrication, dissolve organic tissue and eradicate the microorganisms from the root canal system (4)(5)(6)(7)(8). However, sodium hypochlorite is unable to remove inorganic components, and thus, unable to remove the smear layer produced during canal instrumentation (5,6).…”

Section: Introductionmentioning

confidence: 99%

Intracanal Irrigating Solutions Prior to Calcium Hydroxide Medication and Its Effects on Root Dentin Strength

et al. 2017

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The aim of this study was to assess the effects of intracanal irrigation with sodium hypochlorite (NaOCl) and ethylenediaminetetracetic acid (EDTA) prior to calcium hydroxide medication on the compressive strength of root dentin. Forty-eight roots with single and straight canals were instrumented with a crown-down technique using Flexofile files and Gates Glidden burs, under 0.9% sodium chloride (NaCl) irrigation. Root canals were randomly separated into 4 groups (n=12), according to the irrigating solution: Control Group, 0.9% NaCl; Group NaOCl , 1% NaOCl; Group EDTA , 17% EDTA; and Group EDTA+NaOCl , 17% EDTA and 1% NaOCl. Solutions remained for 40 min, renewed every 10 min, except for Group EDTA+NaOCl , where the solutions were alternated every 10 min. Canals were dried and filled with calcium hydroxide paste, and radiographed. Each canal was sealed and stored at 37 °C for 30 days. After this period, the roots were cut 1 mm below the cementoenamel junction and 6 mm apically from this point in order to obtain 6 mm-long cylinders. The compressive test was conducted with a crosshead speed of 1 mm/min. The means (±SD) (MPa) of compressive strength were: Control Group, 151.23±94.36; Group NaOCl , 167.50±57.25; Group EDTA , 108.79±99.88; Group EDTA+NaOCl , 60.12±92.10. Significant statistical differences among groups were found (ANOVA and Tukey, α=5%, p=0.02). Control Group and Group NaOCl showed higher means of compressive strength than Group EDTA+NaOCl . Intracanal irrigation with 17% EDTA and 1% NaOCl produced a significant reduction of dentin compressive strength 30 days after medication with calcium hydroxide.

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“…In addition, carbohydrates or glycoconjugates are also categorized as virulence factors in pathogenesis of enterococcal infections. 5,6 The prevention concept of E. faecalis infection is based on the sensitivity level of the anti-bacterial materials considered as irrigation materials. 7 Chlorhexidine (CHX) is reported as very good irrigation material since it has higher sensitivity than calcium hydroxide.…”

mentioning

confidence: 99%

Effects of sarang semut (Myrmecodia Pendens Merr. & Perry) extracts on Enterococcus faecalis sensitivity

Soraya¹,

Dharsono²,

Aripin³

et al. 2016

Dent. J. (Majalah Kedokteran Gigi)

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Efficacy of low concentrations of sodium hypochlorite and low‐powered Er,Cr:YSGG laser activated irrigation against an Enterococcus faecalis biofilm

Abstract: Within the limitations of this laboratory study, low-powered (0.5 W) Er,Cr:YSGG laser activation did not improve the antibacterial effect of low concentrations of sodium hypochlorite.

Cited by 45 publications

References 47 publications

1064-nm Nd:YAG and 980-nm Diode Laser EDTA Agitation on the Retention of an Epoxy-Based Sealer to Root Dentin

1064-nm Nd:YAG and 980-nm Diode Laser EDTA Agitation on the Retention of an Epoxy-Based Sealer to Root Dentin

Intracanal Irrigating Solutions Prior to Calcium Hydroxide Medication and Its Effects on Root Dentin Strength

Effects of sarang semut (Myrmecodia Pendens Merr. & Perry) extracts on Enterococcus faecalis sensitivity

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