Comparative evaluation of the effect of two different concentrations of EDTA at two different PH and time periods on root dentin

Successful root canal therapy relies on the combination of proper instrumentation, irrigation, and obturation of the root canal. Of these three essential steps of root canal therapy, irrigation of the root canal is the most important determinant in the healing of the periapical tissues. The primary endodontic treatment goal must thus be to optimize root canal disinfection and to prevent reinfection. In this review of the literature, various irrigants and the interactions between irrigants are discussed. We performed a Medline search for English-language papers published untill July 2010. The keywords used were ‘root canal irrigants’ and ‘endodontic irrigants.’ The reference lists of each article were manually checked for additional articles of relevance.

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“…greater smear layer removal was found in the 1-min EDTA irrigation group than the 30-sec or 15-sec groups. [ 44 45 ]…”

Section: Edtamentioning

confidence: 99%

Root canal irrigants

2010

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“…Effective smear-layer removal plays a pivotal role in the successful outcome of endodontic therapy [21]. Due to the similar smear layer cleaning efficacy between 10 wt% citric acid and 15 wt% EDTA, we are interested in knowing what causes the hydroxyapatite (HAp) breakdown shown in SEM.…”

Section: Discussionmentioning

confidence: 99%

“…According to Saito et al greater smear layer removal was found in the 1-min EDTA irrigation group than the 30-sec or 15-sec groups [31]. No clear-cut guideline about the optimal time period for aqueous EDTA solution irrigation was addressed [21]. Prolonged exposure of root dentine to EDTA might have the potential risk of root dentine weakening [32].…”

Section: Discussionmentioning

confidence: 99%

Wasted Ganoderma tsugae Derived Chitosans for Smear Layer Removal in Endodontic Treatment

et al. 2019

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The objective of this study is to investigate the synergistic effects of acid etching and metal-ion chelation in dental smear layer removal using wasted Ganoderma tsugae derived chitosans. The wasted Ganoderma tsugae fruiting body was used to prepare both acid-soluble fungal chitosan (FCS) and alkali-soluble polysaccharide (ASP). To explore the effective irrigant concentration for smear layer removal, a chelating effect on ferrous ions was conducted. Specimens of various concentrations of EDTA, citric acid, and polysaccharide solutions were reacted with FerroZine™ then the absorbance was examined at 562 nm by a UV-visible spectrophotometer to calculate their metal chelating capability. Twenty extracted premolars were instrumented and individually soaked in the solutions of 15 wt% EDTA, 10 wt% citric acid, 0.04 wt% ASP, 0.04 wt% FCS, and normal saline were randomly divided into five groups (N=4). Next, each tooth was cleaved longitudinally and examined by scanning electron microscopy (SEM) to assay the effectiveness of smear layer removal. The chelating capability for EDTA, FCS, and ASP showed no significant difference over the concentration of 0.04 wt% (p > 0.05). The SEM results showed that 0.04 wt% FCS solution was effective in smear layer removal along the canal wall. These results indicated that Ganoderma tsuage derived FCS in acid solutions could be a potential alternative as a root canal irrigant solution due to its synergistic effect.

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“…However, the use of only one irrigant is not sufficient to achieve smear layer removal. Many reports have demonstrated the decalcifying capacity of agents such as 10% -17% EDTA, 17% ethylene glycol tetraacetic acid (EGTA) [17], MTAD (mixture of tetracycline isomer (doxycycline) [18], citric and maleic acid [19], and dimercaptosuccinic acid (DMSA) [20]). These agents bring about the remo-val of inorganic components and debris from the instrumented canals.…”

Section: Introductionmentioning

confidence: 99%

“…These agents bring about the remo-val of inorganic components and debris from the instrumented canals. The decalcifying efficacy of these acidic and chelating agents depends on the root length, application time, diffusion in the dentine and solution pH [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Sealing ability of AH26 and soft core gutta-percha using different instrumentations techniques and irrigations protocol: A SEM evaluation

Koçani

Kamberi²,

Dragusha³

2013

OJST

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Aim: The aim of this ex vivo study, with SEM, was to determine the effects of the smear layer on the root canal systems after different instrumentation technique and irrigation protocol, obturated with carrier based gutta-percha (Soft Core) and AH26 sealer. Materials & Methods: Forty freshly extracted human teeth were used for this study. The teeth were divided into two major groups according to instrumentation technique (Manual and ProFile) and then each major group into four subgroups according to irrigation protocol (Saline solution, 17% EDTA, 5.25% NaOCl). All of the samples were obturated with AH26 and Soft Core Heating Gutta-percha. The evaluation of the objectives was performed using a Scanning Electron Microscope. Result: ProFile instrumentation followed with irrigation of 17% EDTA and 5.25% NaOCl, selaed with AH26 Soft Core Heating Guttapercha provided maximal contact at the S/D interface. The S/D interface had a serrated appearance due to effective penetration of the sealer into the patent dentin tubules. Conclusions: The adhezion of the respective sealer is more successful in cases when smear layer was removed completely.

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Comparative evaluation of the effect of two different concentrations of EDTA at two different PH and time periods on root dentin

Cited by 5 publications

References 0 publications

Root canal irrigants

Root canal irrigants

Wasted Ganoderma tsugae Derived Chitosans for Smear Layer Removal in Endodontic Treatment

Sealing ability of AH26 and soft core gutta-percha using different instrumentations techniques and irrigations protocol: A SEM evaluation

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