| 韩艳彦,杜嵘,朱亚琴.10%抗坏血酸钠对外漂白后复合树脂充填体微渗漏的影响[J].口腔材料器械杂志,2015,24(1):5-9. |
| 10%抗坏血酸钠对外漂白后复合树脂充填体微渗漏的影响 |
| Effects of 10% sodium ascorbate on microleakage of composite resin restorations after external bleaching |
| 投稿时间：2013-12-01 修订日期：2014-10-20 |
| DOI：10.11752/j.kqcl.2015.01.02 |
| 中文关键词: 抗坏血酸钠 表面活化剂 过氧化脲外漂白 复合树脂 微渗漏 |
| 英文关键词:Sodium ascorbate Surfactan (0.2% Tween) External tooth bleaching with carbamide peroxide Composite resin Microleakage |
| 基金项目:上海市科学技术委员会项目(08DZ2271100和08JC1414500),上海市教委科研创新重点项目(09ZZ116) |
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| 中文摘要: |
| 目的 观察10% 抗坏血酸钠与含表面活化剂(Tween,0.2%)的10% 抗坏血酸钠对经10%过氧化脲外漂白后复合树脂充填体微渗漏的影响.方法 选取牙体完整健康的人离体前磨牙50 颗,随机分为5 组,第1 组不漂白直接树脂充填,第2 组用10% 过氧化脲漂白后立即树脂充填,第3 组漂白后将牙齿浸泡在人工唾液中3 周再进行树脂充填,第4 组漂白后先用10% 抗坏血酸钠处理窝洞后再充填树脂,第5 组漂白后先用含0.2%Tween 的10% 抗坏血酸钠处理窝洞后再进行树脂充填.然后,将5 组样本进行2000 个周期的冷热循环,2% 亚甲基蓝染色24h,体视显微镜下观察剖面充填体的微渗漏情况.结果 第1 组微渗漏值最低,第2 组微渗漏值最高,第3、4 组微渗漏值显著高于第1 组但与第2 组无显著性差异(P>0.05);第5 组渗漏值较第2 组及第4 组显著下降(P<0.05).结论 10% 过氧化脲外漂白致复合树脂充填体边缘微渗漏明显增加,含0.2%Tween 的10% 抗坏血酸钠处理窝洞可以有效减少该微渗漏的增加,延迟充填和单纯使用抗坏血酸钠均不能有效减少微渗漏. |
| 英文摘要: |
| Objective To investigate the effects of 10% sodium ascorbate, 10% sodium ascorbate combined with a surfactan(Tween,0.2%) on the microleakage of composite resin restorations after external tooth bleaching with 10% carbamide peroxide. Methods Fifty extracted human premolars, intact and health, were randomly divided into five groups:group 1, direct composite resin filling without bleaching; group 2, composite resin filling immediately after bleaching with 10% carbamide peroxide; group 3, immersed in artificial saliva for three weeks after bleaching, then filled by composite resin; group 4, cavity treated with 10% sodium ascorbate after bleaching and then filled by composite resin; group 5, cavity treated with 10% sodium ascorbate combined with 0.2% Tween after bleaching and then filled by composite resin. After 2000 thermal cycles, teeth were immersed in 2% methylene blue for 24 hours, then the microleakage at resin/deatin interface was observed under stereomicroscope. Results Group 1 displayed the least amount of microleakage, while group 2 showed the greatest amount of microleakage, group 3 and group 4 behaved similarly to group 2, having great amount of microleakage, showing no significant difference (P>0.05); the microleakage of group 5 decreased significantly (P<0.05) compared to group 2 and group 4. Conclusion The microleakage increased significantly after external bleaching with 10% carbamide peroxide, and decreased when cavities treated with 10% sodium ascorbate combined with 0.2% Tween. However, both delay filling and treated with sodium ascorbate could not effectiely decrease the microleakage. |
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