Domínguez Arantza, García Juan Antonio, Costela Angel, Gómez Clara
Department of Laser Chemistry, Rocasolano Institute of Physical Chemistry, CSIC, Madrid, Spain.
Photomed Laser Surg. 2011 Jan;29(1):53-9. doi: 10.1089/pho.2009.2751. Epub 2010 Oct 22.
To examine the whitening efficacy of three whitening agents in combination with six different photoactivation systems.
Bleaching techniques have achieved significant advances using photoactivation with coherent or incoherent radiation sources.
Quick White, Ena White Power, and Opalescence Endo bleaching agents, all containing 35% hydrogen peroxide, were stimulated with halogen lamp, light-emitting diode (LED), low-power diode laser, and neodymium: yttrium-aluminum-garnet (Nd:YAG), second harmonic of Nd:YAG, and Er:YAG lasers. One hundred twenty-six extracted human incisors were treated, and color change, pulpal temperature, and enamel morphological alterations were evaluated.
Only the groups that were photoactivated using a diode laser, halogen lamp, and LED showed statistically significant differences (p < 0.005) in color change when compared with the control group (without photoactivation). All whitening protocols were safe with regard to the increase in pulpal temperature. Scanning electron microscopy showed no evidence of effects on the integrity of enamel.
The source of irradiation is more relevant than the bleaching agent for efficient tooth whitening. In addition, photoactivation with LED was found to be the best choice: it yielded significant change in color with only a minor increase in pulpal temperature.
研究三种美白剂与六种不同光激活系统联合使用时的美白效果。
使用相干或非相干辐射源进行光激活，漂白技术已取得显著进展。
使用卤素灯、发光二极管（LED）、低功率二极管激光器、钕：钇铝石榴石（Nd:YAG）激光器、Nd:YAG的二次谐波激光器和铒：钇铝石榴石（Er:YAG）激光器，对均含35%过氧化氢的Quick White、Ena White Power和Opalescence Endo美白剂进行刺激。对126颗拔除的人切牙进行处理，并评估颜色变化、牙髓温度和牙釉质形态改变。
与对照组（无光激活）相比，仅使用二极管激光器、卤素灯和LED进行光激活的组在颜色变化上有统计学显著差异（p < 0.005）。所有美白方案在牙髓温度升高方面都是安全的。扫描电子显微镜显示没有证据表明对牙釉质完整性有影响。
对于有效的牙齿美白，辐射源比美白剂更重要。此外，发现使用LED进行光激活是最佳选择：它仅使牙髓温度略有升高，却能产生显著的颜色变化。
