Effect of EDTA and citric acid solutions on the microhardness and the roughness of human root canal dentin.
The purpose of this study was to evaluate the effect of citric acid and EDTA solutions on the microhardness and the roughness of human root canal dentin. Forty-five human teeth sectioned longitudinally were used. Specimens were randomly divided into three groups of 30 teeth each and were treated as follows: (a) one molar (19%) citric acid (C6H8O7) for 150 s followed by 5.25% NaOCl; (b) 17% EDTA for 150 s and rinsed with 5.25% NaOCl; (c) rinsed with distilled water and served as control. Three groups were then divided into two subgroups of 15 specimens each. The specimens, in first subgroup were subjected to Vicker's testing whereas the second subgroup underwent surface roughness testing. The results were analyzed using one-way ANOVA and Tukey tests. Significant differences were observed in microhardness among the test groups, citric acid group being the least hard (p 0.05). Also, citric acid significantly increased surface roughness.
Eldeniz
Ayce Unverdi
AU
Department of Endodontics, Faculty of Dentistry, University of Selcuk, Turkey. aunverdi@selcuk.edu.tr
Erdemir
Ali
A
Belli
Sema
S
D000328:Adult; D000704:Analysis of Variance; D002614:Chelating Agents / Q000494:pharmacology*; D019343:Citric Acid / Q000494:pharmacology*; D003804:Dentin / Q000187:drug effects*; D004492:Edetic Acid / Q000494:pharmacology*; D005260:Female; D006244:Hardness / Q000187:drug effects; D006801:Humans; D007180:Incisor; D008297:Male; D008422:Materials Testing; D011897:Random Allocation; D012388:Root Canal Irrigants / Q000494:pharmacology*; D012973:Sodium Hypochlorite / Q000494:pharmacology; D018709:Statistics, Nonparametric; D013499:Surface Properties / Q000187:drug effects
D002614:Chelating Agents; D012388:Root Canal Irrigants; D019343:Citric Acid; D004492:Edetic Acid; D012973:Sodium Hypochlorite