The effect of sodium hypochlorite and ethylenediaminetetraacetic acid irrigation, individually and in alternation, on tooth surface strain

Rajasingham, R.; Ng, YL; Knowles, Jonathan C.; Gulabivala, K

doi:10.1111/j.1365-2591.2009.01625.x

Cited by 39 publications

(51 citation statements)

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“…This effect probably contributes to increase the incidence of fractures and/or cracks. Rajassingham et al (23) verified that alternate irrigation with 5% NaOCl and 17% EDTA resulted in increases of tooth surface strain. Those authors explain that the alternate irrigation with 5% NaOCl and 17% EDTA probably allows the alternate depletion of organic and inorganic material, with a greater accumulative depth of effect on dentine and therefore tooth surface strain.…”

Section: Solutionmentioning

confidence: 99%

Effect of sodium hypochlorite and edta irrigation, individually and in alternation, on dentin microhardness at the furcation area of mandibular molars

2012

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The aim of this study was to evaluate the effect of irrigation regimens on dentin microhardness at the furcation area of mandibular molars, using sodium hypochlorite and ethylenediaminetetraacetic acid (EDTA), individually and in alternation. The occlusal surface and the roots of 20 non-carious extracted human permanent mandibular molars were cut transversally and discarded. The tooth blocks were embedded in acrylic resin and randomly assigned to 4 groups (n=5) according to the irrigating regimens: 1% NaOCl solution, 17% EDTA solution, 1% NaOCl and 17% EDTA and distilled water (control). Knoop microhardness of dentin at the furcation area was evaluated. Data were analyzed using one-way ANOVA and Tukey's multiple comparison tests (α=0.05). The results of this study indicated that all irrigation solutions, except for distilled water (control), decreased dentin microhardness. EDTA did not show a significant difference with NaOCl/EDTA (p>0.05), but showed a significant difference with NaOCl (p<0.01). EDTA and NaOCl/EDTA showed a maximum decrease in microhardness. The 17% EDTA solution, either alone or in combination with 1% NaOCl reduced significantly dentin microhardness at the furcation area of mandibular molars.

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Section: Solutionmentioning

confidence: 99%

Effect of sodium hypochlorite and edta irrigation, individually and in alternation, on dentin microhardness at the furcation area of mandibular molars

2012

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“…Irrigation with sodium hypochlorite increase tooth surface strain. The increase was significantly greater with 5% NaOCl alone than with 5% NaOCl alternated with 17% EDTA [42,43].…”

Section: Discussionmentioning

confidence: 80%

The cleaning efficiency of the root canal after different instrumentation technique and irrigation protocol: A SEM analysis

Koçani¹

2012

OJST

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Aim: The objective of this study was to evaluate the effectiveness of manual and ultrasonic instrumentation with varying irrigation protocols on removal of the smear layer from root canal walls. Methods: Forty extracted single rooted human teeth stored in 0.5% saline were used. Periodontal soft tissues were removed followed by crown separation at the CEJ. All the teeth were randomly divided into two groups. Manually Instrumented Group 1 was irrigated with 5.25% NaOCl and 17% EDTA alternately, same as Ultrasonically Instrumented Group 2. The controls for both groups were irrigated with saline solution. Results: Ultrasonic instrumentation and the combined use of two different solutions (5.25% NaOCl and 17% EDTA) yielded better results on smear removal. Conclusions: Irrigation with 17% EDTA followed by 5.25% NaOCl was successful in complete removal of smear layer on cervical and middle thirds of the root canals. Ultrasonic instrumentation was slightly more successful on the apical one third of the root canals.

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“…Further to this chemo-mechanical endodontic procedures weaken teeth. The utilisation of hypochlorite and EDTA significantly weakened teeth and increased tooth surface strain [24,25]. These biomechanical factors need to be considered in tandem with the need for optimal coronal seal as lack of tooth tissue will not only make teeth susceptible to fracture but also compromise post root canal treatment failure due to re-infection [20].…”

Section: The Need To Protect Non-vital Teethmentioning

confidence: 99%

Clinical issues in occlusion – Part I

Alani

Patel

2014

Singapore Dental Journal

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The effect of sodium hypochlorite and ethylenediaminetetraacetic acid irrigation, individually and in alternation, on tooth surface strain

Cited by 39 publications

References 50 publications

Effect of sodium hypochlorite and edta irrigation, individually and in alternation, on dentin microhardness at the furcation area of mandibular molars

Effect of sodium hypochlorite and edta irrigation, individually and in alternation, on dentin microhardness at the furcation area of mandibular molars

The cleaning efficiency of the root canal after different instrumentation technique and irrigation protocol: A SEM analysis

Clinical issues in occlusion – Part I

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