Cura María, Fuentes M Victoria, Ceballos Laura
Department of Stomatology and Nursing, Faculty of Health Sciences, Rey Juan Carlos University.
Dent Mater J. 2015;34(2):203-10. doi: 10.4012/dmj.2014-248. Epub 2015 Feb 24.
This study evaluated the effects of several low-concentration bleaching products on microtensile bond strength (µTBS) to enamel at different elapsed times after the bleaching treatment. One hundred and fifty bovine incisors were divided into five groups: No treatment, 10% carbamide peroxide (Opalescence), 10% hydrogen peroxide (Opalescence Treswhite Supreme), 3% carbamide peroxide plus lactoperoxidase (WhiteKin), or 3% carbamide peroxide plus 2.7% carbamide peroxide (Clysiden Kit Express). All treatments lasted 4 weeks. After bleaching treatment or non-treatment, teeth were restored immediately, at 1, 3, 7, or 14 days after bleaching and submitted to µTBS test. Data were analyzed by ANOVA and Tukey's test (p<0.05). For WhiteKin and Clysiden, µTBS to enamel was significantly reduced immediately, at 1, 3 and 7 days after bleaching. At 14 days after bleaching, similar µTBS values were obtained regardless of bleaching product. Therefore, while over-the-counter (OTC) products might affect bond strength to enamel, this effect was no longer observed after 14 days.
本研究评估了几种低浓度漂白产品在漂白处理后不同时间对牙釉质微拉伸粘结强度（µTBS）的影响。150颗牛切牙被分为五组：未处理组、10%过氧化脲（皓齿）、10%过氧化氢（超强皓齿）、3%过氧化脲加乳过氧化物酶（美白健）或3%过氧化脲加2.7%过氧化脲（速白套装）。所有处理持续4周。在漂白处理或未处理后，牙齿在漂白后即刻、1天、3天、7天或14天进行修复，并进行µTBS测试。数据采用方差分析和Tukey检验（p<0.05）进行分析。对于美白健和速白套装，漂白后即刻、1天、3天和7天对牙釉质的µTBS显著降低。在漂白后14天，无论使用何种漂白产品，均获得相似的µTBS值。因此，虽然非处方（OTC）产品可能会影响与牙釉质的粘结强度，但在14天后不再观察到这种影响。
