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.
Elgendy, A. (2017). THE EFFECT OF CHITOSAN AND PROPOLIS IRRIGATION ON ROOT DENTIN MICROHARDNESS. Egyptian Dental Journal, 63(Issue 1 - January (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics)), 1069-1075. doi: 10.21608/edj.2017.75261
MLA
Abeer Abdelhakim Elgendy. "THE EFFECT OF CHITOSAN AND PROPOLIS IRRIGATION ON ROOT DENTIN MICROHARDNESS". Egyptian Dental Journal, 63, Issue 1 - January (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics), 2017, 1069-1075. doi: 10.21608/edj.2017.75261
HARVARD
Elgendy, A. (2017). 'THE EFFECT OF CHITOSAN AND PROPOLIS IRRIGATION ON ROOT DENTIN MICROHARDNESS', Egyptian Dental Journal, 63(Issue 1 - January (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics)), pp. 1069-1075. doi: 10.21608/edj.2017.75261
VANCOUVER
Elgendy, A. THE EFFECT OF CHITOSAN AND PROPOLIS IRRIGATION ON ROOT DENTIN MICROHARDNESS. Egyptian Dental Journal, 2017; 63(Issue 1 - January (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics)): 1069-1075. doi: 10.21608/edj.2017.75261