Kadiyala Anirudh, Saladi Hari Krishna, Bollu Indira Priyadarshini, Burla Devipriya, Ballullaya Srinidhi Vishnu, Devalla Srihari, Maroli Sohani, Jayaprakash Thumu
Post Graduate Student, Department of Conservative Dentistry & Endodontics, St. Joseph Dental College & Hospital , Duggirala, Eluru, Andhra Pradesh India .
Senior Lecturer, Department of Conservative Dentistry & Endodontics, St. Joseph Dental College & Hospital , Duggirala, Eluru, Andhra Pradesh India .
J Clin Diagn Res. 2015 Nov;9(11):ZC40-3. doi: 10.7860/JCDR/2015/16140.6790. Epub 2015 Nov 1.
The bond strength of the composite to the bleached enamel plays a very important role in the success and longevity of an aesthetic restoration.
The aim of this study was to compare and evaluate the effect of Aloe Vera with 10% Sodium Ascorbate on the Shear bond strength of composite resin to bleached human enamel.
Fifty freshly extracted human maxillary central incisors were selected and divided into 5 groups. Group I and V are unbleached and bleached controls groups respectively. Group II, III, IV served as experimental groups. The labial surfaces of groups II, III, IV, V were treated with 35% Carbamide Peroxide for 30mins. Group II specimens were subjected to delayed composite bonding. Group III and IV specimens were subjected to application of 10% Sodium Ascorbate and leaf extract of Aloe Vera following the Carbamide Peroxide bleaching respectively. Specimens were subjected to shear bond strength using universal testing machine and the results were statistically analysed using ANOVA test. Tukey (HSD) Honest Significant Difference test was used to comparatively analyse statistical differences between the groups. A p-value <0.05 is taken as statistically significant.
The mean shear bond strength values of Group V showed significantly lower bond strengths than Groups I, II, III, IV (p-value <0.05). There was no statistically significant difference between the shear bond strength values of groups I, II, III, IV.
Treatment of the bleached enamel surface with Aloe Vera and 10% Sodium Ascorbate provided consistently better bond strength. Aloe Vera may be used as an alternative to 10% Sodium Ascorbate.
复合材料与漂白牙釉质之间的粘结强度对美学修复的成功和持久性起着非常重要的作用。
本研究的目的是比较和评估芦荟与10%抗坏血酸钠对复合树脂与漂白人牙釉质剪切粘结强度的影响。
选取50颗新鲜拔除的人上颌中切牙，分为5组。第一组和第五组分别为未漂白和漂白对照组。第二组、第三组、第四组作为实验组。第二组、第三组、第四组、第五组的唇面用35%过氧化脲处理30分钟。第二组标本进行延迟复合粘结。第三组和第四组标本在过氧化脲漂白后分别应用10%抗坏血酸钠和芦荟叶提取物。使用万能试验机对标本进行剪切粘结强度测试，并使用方差分析对结果进行统计学分析。采用Tukey（HSD）诚实显著差异检验对各组之间的统计差异进行比较分析。p值<0.05被视为具有统计学意义。
第五组的平均剪切粘结强度值显示出比第一组、第二组、第三组、第四组显著更低的粘结强度（p值<0.05）。第一组、第二组、第三组、第四组的剪切粘结强度值之间没有统计学显著差异。
用芦荟和10%抗坏血酸钠处理漂白牙釉质表面可提供始终更好的粘结强度。芦荟可作为10%抗坏血酸钠的替代品。
