Gogia Hulas, Taneja Sonali, Kumar Mohit, Soi Sonal
I.T.S Centre for Dental Studies and Research, Ghaziabad, Uttar Pradesh, India.
J Conserv Dent. 2018 Jan-Feb;21(1):100-104. doi: 10.4103/JCD.JCD_325_16.
The effect of 10% sodium ascorbate, 10% α-tocopherol, 10% grape seed extract, and 10% guava seed extract solutions on the shear bond strength (SBS) of composite resin to bleached enamel was evaluated.
Labial enamel surfaces of 72 extracted maxillary central incisors were bleached using 37.5% hydrogen peroxide. Sixty-four specimens were divided into four experimental groups (Group I-IV) comprising 16 specimens each and remaining eight specimens were placed in Group V. Groups I-IV were further divided into 2 subgroups: A (10 min) and B (120 min) comprising 8 specimens each. Eight unbleached specimens served as control (Group VI). Immediately following bleaching, Groups IA-IVA and IB-IVB specimens were treated with respective antioxidants for 10 min and 120 min. All specimens were then bonded with composite resin. Specimens were stored in distilled water for 24 h. SBS testing was done. Data were tabulated and subjected to statistical analysis using ANOVA and Tukey's honest significant difference test.
Group VI (unbleached) showed the highest SBS followed by Group IV (10% guava seed extract).
Use of antioxidants effectively reversed the compromised bond strength of bleached enamel. About 10% guava seed extract application after bleaching showed best bond strength.
评估10%抗坏血酸钠、10%α-生育酚、10%葡萄籽提取物和10%番石榴籽提取物溶液对复合树脂与漂白牙釉质之间剪切粘结强度（SBS）的影响。
使用37.5%的过氧化氢对72颗拔除的上颌中切牙的唇面牙釉质进行漂白。64个样本被分为四个实验组（I-IV组），每组16个样本，其余8个样本置于V组。I-IV组进一步分为2个亚组：A（10分钟）和B（120分钟），每组8个样本。8个未漂白的样本作为对照组（VI组）。漂白后立即对IA-IVA组和IB-IVB组样本分别用相应的抗氧化剂处理10分钟和120分钟。然后所有样本用复合树脂粘结。样本在蒸馏水中储存24小时。进行SBS测试。数据制成表格，并使用方差分析和Tukey诚实显著差异检验进行统计分析。
VI组（未漂白）显示出最高的SBS，其次是IV组（10%番石榴籽提取物）。
使用抗氧化剂可有效逆转漂白牙釉质受损的粘结强度。漂白后应用约10%番石榴籽提取物显示出最佳的粘结强度。
