Investigation of the effects of different chelating solutions on the microhardness and surface roughness of root canal dentin

Abstract

Introduction: The purpose of this study is to examine the effect of different chelating solutions on microhardness and surface roughness of root canal dentin.
 Methodology: The crowns of sixty recently extracted maxillary central incisors were separated by diamond burs from the cemento-enamel junction. Roots are divided longitudinally into two pieces with diamond saw. The obtained samples were embedded in autopolymeric-acrylic and the dentin-surfaces of the teeth were grounded. Micro-hardness and surface-roughness measurements were carried out before the chelating processes. First group, the specimens were treated with gel-formed 17% Ethylenediaminetetraacetic acid [EDTA] (JE), second group, specimens were treated with 17% Liquid-formed EDTA (LE), third group, specimens were treated with 20% Citric acid (CA), and the last group specimens were treated with 7% Maleic acid (MA) for 120 seconds. After application of the chelating agents, micro-hardness and surface-roughness measurements of all samples were performed again. The difference between the initial and final measurements was calculated and statistically analyzed. One Way Analysis of Variance ANOVA was used for statistical-analysis and statistically significant difference was observed between the groups (p <0.05).
 Results: According to the test results, the microhardness of LE was statistically equal to that of JE and caused the least decrease in micro-hardness, SA decreased micro-hardness more than LE and JE, and MA decreased dentin micro-hardness more than all other solutions. And surface-roughness results are: MA increased surface-roughness more than other groups, SA and JE less roughened the dentin surface than MA, and there was no significant difference between the two solutions, LE caused less increase in dentin surface roughness compared to all solutions.
 Conclusions: Besides the use of EDTA and SA, the clinical use of MA can be considered, and it should also be noted that EDTA differs in terms of surface roughness between liquid and gel forms.
 
 How to cite this article: Topbaş C, Adıgüzel Ö, Çölgeçen Ö. Investigation of the effects of different chelating solutions on the microhardness and surface roughness of root canal dentin. Int Dent Res 2019;9(1):22-9.
 
 Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.

Effects of Different Natural Irrigant Solutions on Surface Roughness of Root Canal Dentin Using Quantitative Topographical 3d Surface Texture Analysis

“…These results can be interpretated on the base that apple vinegar containing maleic acid as main ingredient with its demineralization capacity that related to strong acidic pH that produce higher dentin surface roughness than that of EDTA (24) . This results were in accordance with the study results reported that apple vinegar as fruit extract produced high surface roughness, and another reported that maleic acid recorded highest roughness compared to citric acid and EDTA (24)(25)(26)(27) . However; it was in contrast with results of study that reported that 17% EDTA formed higher value of surface roughness compared to 5% apple vinegar, but the other study applied the irrigating solutions for 1 minute while in this study the were applied for 3 minutes which expected to permit extra chelation effect and greater surface roughness (25,28) .…”

Comparative evaluation of decalcifying agents for dissolution of pulp stones: An in vitro study

“…[ 27 28 29 ] However, there was no statistically significant difference in the microhardness of dentin between the PSDA and negative control group. Although this is considered to be a clinical advantage, attention should be paid regarding the contact time of the solution,[ 29 ] and accordingly, further studies can be performed to investigate the effect of PSDA solution on the penetration of dentinal tubules and fracture resistance of dentin postchemical treatment.…”

Effect of Demineralizing Agents on Organic and Inorganic Components of Dentine

“…to simulate the effect of a root-canal treatment clinical procedure [Oh et al, 2015;Ramirez-Bommer et al, 2018, Salas López et al, 2019, Topbaş et al 2019, Unnikrishnan et al, 2019, Gondolfi et al 2019, Baron et al, 2020. With consistent findings that varying the concentrations of EDTA and citric acid affected collagen in a dissimilar manner.…”

“…Conversely, dietary citric acid can cause demineralisation by using both mechanisms. In addition to the noted variation in the effect of the acids studied, there is also a significant variation in the types of dentine used, varying between radicular [Oh et al, 2015;Turk et al, 2015, Salas López et al, 2019, Topbaş et al 2019, Unnikrishnan et al, 2019, Gondolfi et al [2019, Baron et al, 2020 and coronal dentine [Gondolfi et al, 2019] and between human adolescent premolar teeth [Besinis et al, 2016, Unnikrishnan et al, 2019, incisor teeth [Topbaş et al 2019] and third molars [Shellis 2010, Ramirez-Bommer et al, 2018 and bovine teeth [Moron et al 2012;Lippert et al, 2015, Tartari et al, 2018, Salas López et al, 2019. The duration of exposure to the acids also varies significantly between the cited studies.…”