激光荧光法是一种将激光灯诱导产生的荧光作为发现初期釉质龋损的诊断方法。当蓝绿色激光灯照在牙齿表面时,通过黄色滤光器可见正常釉质自动显影为黄色。当釉质脱矿后,釉质吸收光的能力降低,因此荧光密度也减低,本研究的目的就是应用这一方法来定量并纵向评价口内正畸带环和托槽周围形成的白色点状龋损的改变。 Laser Fluorescence is a method that uses laser-induced fluorescence as a diagnostic tool to detect initial enamel lesions. When the blue-green laser light shines on the tooth surface, the normal enamel is automatically developed to yellow through the yellow filter. When enamel is demineralized, the ability of the enamel to absorb light is reduced and thus the fluorescence density is also reduced. The purpose of this study was to use this method to quantify and longitudinally evaluate white point-like carious lesions formed around the orthodontic band and brackets change.