THE EFFECT OF CHITOSAN AND PROPOLIS IRRIGATION ON ROOT DENTIN MICROHARDNESS | ||||
| Egyptian Dental Journal | ||||
| Article 39, Volume 63, Issue 1 - January (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics), January 2017, Page 1069-1075 PDF (243.75 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/edj.2017.75261 | ||||
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| Author | ||||
| Abeer Abdelhakim Elgendy | ||||
| Associate Professor of Endodontics, Faculty of Dentistry Ain Shams University | ||||
| Abstract | ||||
| Introduction: The aim of the present study is to evaluate comparatively the action of 0.2% chitosan, 4% propolis, 2.6 % NaOCl and 17% EDTA on human root dentin microhardness. Methods: Twenty recently extracted single-rooted mandibular premolar teeth were selected. The roots were split longitudinally into 2 parts (40 specimens). The specimens were randomly divided into 4 groups and were treated with 0.2% chitosan, 4% propolis, 2.6 % NaOCl and 17% EDTA immediately after the initial baseline microhardness measurements. A standardized volume of 2 ml of each solution was used for 5 minutes. The reference microhardness values of untreated specimens were initially measured with a Vickers indenter under a 50-g load and a 10-second dwell time. Posttreatment microhardness values were obtained in the same manner as the initial ones. The decrease in microhardness was calculated as a percentage. Data were analyzed statistically by 1-way analysis of variance (P = .05) and the post hoc Tukey test for multiple comparisons at the same level of significance. Differences between pretreatment and post-treatment microhardness were statistically analyzed by using the t-test with a P value of .05 Results: After treatment, all solutions significantly decreased the microhardness of root dentin (P < .05) however both 0.2% chitosan, 4% propolis significantly decreased dentin microhardness compared to 2.6 % NaOCl and 17% EDTA. Conclusion: All the tested irrigation decreased root dentin microhardness however the effect of either 0.2% chitosan or 4% propolis decreased root dentin microhardness more than 2.6% NaOCl or 17% EDTA. | ||||
| Keywords | ||||
| Propolis; Chitosan; Irrigation; Dentin; Microhrdness | ||||
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