Effect of Different Final Irrigation Solutions on Dentinal Tubule Penetration Depth and Percentage of Root Canal Sealer

Tuncer, Aysun Kara; Tuncer, Safa

doi:10.1016/j.joen.2012.03.008

Cited by 95 publications

(158 citation statements)

References 32 publications

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“…The combined actions of chlorhexidine and cetrimide (a detergent) present in QMiX 32,36 may be responsible for the alteration in microhardness at 500 µm, since these components increase the irrigation of root canal dentin. 32 Moreover, according to Poggio et al, 37 the association of cetrimide with EDTA did not affect decalcifying ability of the latter. The detergent may be responsible for facilitating EDTA penetration into dentinal tubules, causing reduction in microhardness at a greater depth and avoiding EDTA's superficial action, which causes erosion.…”

Section: Discussionmentioning

confidence: 87%

Effect of final irrigation protocols on microhardness reduction and erosion of root canal dentin

et al. 2017

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This study aimed to evaluate the effect of final irrigation protocols on microhardness reduction and erosion of root canal dentin. Sixty root canals from mandibular incisors were instrumented and randomly divided into six groups (n = 10) according to the irrigant used: QMiX, 17% EDTA, 10% citric acid (CA), 1% peracetic acid (PA), 2.5% NaOCl (solution control), and distilled water (negative control). The chelating solutions were used to irrigate the canal followed by 2.5% NaOCl as a final flush. After the irrigation protocols, all specimens were rinsed with 10 mL of distilled water to remove any residue of the chemical solutions. Before and after the final irrigation protocols, dentin microhardness was measured with a Knoop indenter. Three indentations were made at 100 µm and 500 µm from the root canal lumen. Afterwards, the specimens were prepared for scanning electron microscopic analysis and the amount of dentin erosion was examined. Wilcoxon and Kruskal-Wallis tests were used to analyze the results with a significance level set at 5%. At 100 µm, all protocols significantly reduced dentin microhardness (p < .05), while at 500 µm, this effect was detected only in the EDTA and QMiX groups (p < .05). CA was the irrigant that caused more extensive erosion in dentinal tubules, followed by PA and EDTA. QMiX opened dentinal tubules, but did not cause dentin erosion. Results suggest that QMiX and 17% EDTA reduced dentin microhardness at a greater depth. Additionally, QMiX did not cause dentin erosion.

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Section: Discussionmentioning

confidence: 87%

Effect of final irrigation protocols on microhardness reduction and erosion of root canal dentin

et al. 2017

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“…Hence, irrigation is a crucial complement to instrumentation because it penetrates these canal irregularities and disinfects the root canal system efficiently. 2 The removal of the smear layer, which contains attached microbiota and their toxins from canal walls, improves the seal of the obturating materials with the dentinal walls and reduces the potential for survival and reproduction of microorganisms. 3 The depth of sealer penetration into the dentinal tubules might serve as an indicator of the extent to which the smear layer was removed.…”

Section: Introductionmentioning

confidence: 99%

“…3 The depth of sealer penetration into the dentinal tubules might serve as an indicator of the extent to which the smear layer was removed. 2 Chelating agents, such as ethylenediaminetetraacetic acid (EDTA), CA, MA, phosphoric acid, and combinations of EDTA and NaOCl have been used to remove the smear layer. 4 A chelating agent helps in removing the smear layer by forming a coordinate bond with metallic ions of the organic compound.…”

Section: Introductionmentioning

confidence: 99%

“…These results are in agreement with those of other studies. 2 This could possibly be because there are more dentinal tubules in the coronal area, and the diameters of the tubules in the coronal area are larger than those in the apical area. In the present study, depth of sealer penetration was highest when final irrigation was carried out with 17% aqueous EDTA.…”

mentioning

confidence: 99%

“…The sealer labeled with 0.1% rhodamine did not show changes in flow according to American Dental Association specifications. 2 It is important to note that the obturation technique influences the percentage of sealer penetration into the root canal walls. Cold lateral compaction technique was used in this study.…”

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confidence: 99%

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Effects of Different Final Irrigating Solutions on Depth of Sealer Penetration into Dentinal Tubules: An in vitro Confocal Laser Microscopic Study

Shetty¹

2017

Journal of Operative Dentistry &Amp; Endodontics

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Aim: To evaluate the maximum depth of sealer penetration into dentinal tubules at the coronal, middle, and apical third of root canals, following the use of different final irrigation solutions. Materials and methods:Eighty freshly extracted mandibular premolars were selected for the study. After decoronation, instrumentation of samples was done using Protaper universal rotary file system till F4. During shaping and cleaning of root canal, 5.25% concentration of sodium hypochlorite (NaOCl) was used for irrigation. The samples were then randomly divided into four groups (n = 20) depending on the final irrigating solution used. Group I: 17% aqueous ethylenediaminetetraacetic acid (MA) (aq. EDTA); group II: 10% citric acid (CA); group III: 5% maleic acid; group IV: 5.25% conc. NaOCl. Passive ultrasonic irrigation (PUI) was used to activate each final irrigating solution. The samples were obturated using warm lateral condensation technique with guttapercha coated with AH plus sealer mixed with rhodamine B dye. Confocal laser scanning microscopy (CLSM) examined the sealer penetration depth. Results:The Kruskal-Wallis analysis results showed that there was a significant difference in the maximum depth of sealer penetration among all groups in all sections (p < 0.05). The coronal sections of the root canals in each group showed a significantly higher depth of sealer penetration than did the apical and middle sections (p < 0.05). Conclusion:A combination of 17% aq. EDTA and PUI used for final irrigation proved to be more effective for sealer penetration into the dentinal tubules.Clinical significance: Final irrigation protocol followed is of paramount importance in achieving complete disinfection within the root canal, and also the penetration of sealer serves as an indicator of the extent to which the smear layer was removed.

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Evaluation of 17% EDTA and 10% citric acid in smear layer removal and tubular dentin sealer penetration

Machado

Garcia

Neto

et al. 2017

Microscopy Res & Technique

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The purpose of this study was to compare the efficacy of different chelating solutions (17% EDTA and 10% citric acid) on the smear layer removal, and their effect on tubular dentin sealer penetration. Sixty root canals were prepared and distributed into four groups (n = 15) according to the final irrigation protocol: G1, final irrigation with 2.5 mL of distilled water; G2, final irrigation with 2.5 mL of 2.5% sodium hypochlorite solution; G3, final irrigation with 2.5 mL of 17% EDTA; and G4, final irrigation with 2.5 mL of 10% citric acid. Five specimens from each group were not filled to assess smear layer removal by scanning electron microscopy. Ten specimens from each group were filled for analysis of sealer penetration into dentinal tubules by confocal laser scanning microscopy. Smear layer removal (Kruskal-Wallis and Dunn's tests) and sealer penetration (F and Tukey's tests) were statistically analyzed with 95% of significance level. G3 and G4 had greater smear layer removal rates in the cervical and middle thirds, in comparison with G1 and G2 (p < .05). G3 and G4 had the highest percentages of sealer penetration in all thirds, in comparison with G1 and G2 (p < .05). Smear layer removal was effective only at the cervical and middle thirds when the chelating solutions were used. Sealer penetration into the dentinal tubules significantly increased in all root thirds when the specimens were treated with both chelating solutions.

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Effect of Different Final Irrigation Solutions on Dentinal Tubule Penetration Depth and Percentage of Root Canal Sealer

Cited by 95 publications

References 32 publications

Effect of final irrigation protocols on microhardness reduction and erosion of root canal dentin

Effect of final irrigation protocols on microhardness reduction and erosion of root canal dentin

Effects of Different Final Irrigating Solutions on Depth of Sealer Penetration into Dentinal Tubules: An in vitro Confocal Laser Microscopic Study

Evaluation of 17% EDTA and 10% citric acid in smear layer removal and tubular dentin sealer penetration

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