Srinivasan Srividhya, Kadandale Sadasiva, Vishwanath Sankar, Murugesan Kalaiarasi, Parthasarathy Revathy, Thanikachalam Yashini
Department of Conservative Dentistry and Endodontics, Chettinad Dental College and Research Institute, Kanchipuram, Tamil Nadu, India.
J Pharm Bioallied Sci. 2022 Jul;14(Suppl 1):S638-S643. doi: 10.4103/jpbs.jpbs_703_21. Epub 2022 Jul 13.
The depletion of bond strength after the bleaching procedure has resulted in the usage of several antioxidants to get rid of discharging oxygen from residual peroxides before any adhesive restorations.
The study aimed to compare and evaluate the shear bond strength of composite after application of three over-the-counter natural antioxidants on bleached enamel.
Thirty-six extracted human anterior teeth were decoronated at the level of cementoenamel junction and implanted into self-cure acrylic resin exposing the labial surface alone. The embedded specimens were categorized into six groups of six teeth each, and the groups were as follows: Group I: unbleached + composite bonding, Group II: bleaching + delayed composite bonding, Groups III, IV, and V: bleaching + antioxidants - olive oil/Vitamin E oil/propolis + immediate composite bonding, and Group VI: bleaching + immediate composite bonding. The shear bond strength analysis was performed with the help of the universal testing machine, and the values obtained were statistically analyzed using IBM SPSS for Windows, v. 21.0.
The results obtained from the study reveal that all the three experimental groups showed an increase in the shear bond strength in comparison to Group VI (positive control) and the difference in the bond strength between the experimental groups and positive control is also statistically significant.
Within the limitations of this study, although the bond strength of composite resin after application of the three natural over-the-counter antioxidants falls very closely, the usage of oil-based antioxidants had been found to perform less effectively in improving the shear bond strength.
漂白过程后粘结强度的降低导致在进行任何粘结修复之前使用多种抗氧化剂来去除残留过氧化物释放的氧气。
本研究旨在比较和评估三种非处方天然抗氧化剂应用于漂白牙釉质后复合材料的剪切粘结强度。
三十六颗拔除的人前牙在牙骨质釉质界水平处截冠，并植入自凝丙烯酸树脂中，仅暴露唇面。将嵌入的标本分为六组，每组六颗牙，分组如下：第一组：未漂白+复合树脂粘结；第二组：漂白+延迟复合树脂粘结；第三组、第四组和第五组：漂白+抗氧化剂-橄榄油/维生素E油/蜂胶+即刻复合树脂粘结；第六组：漂白+即刻复合树脂粘结。借助万能试验机进行剪切粘结强度分析，并使用IBM SPSS for Windows v. 21.0对获得的值进行统计分析。
研究结果表明，与第六组（阳性对照组）相比，所有三个实验组的剪切粘结强度均有所增加，实验组与阳性对照组之间粘结强度的差异也具有统计学意义。
在本研究的局限性内，尽管应用三种非处方天然抗氧化剂后复合树脂的粘结强度非常接近，但发现油基抗氧化剂在提高剪切粘结强度方面的效果较差。
