Nd:YAG laser is effective in changing morphology of the teeth surfaces, changing crystal structure of enamal and dentin, promoting teeth absorbing fluoride.

• YAG激光因能改变牙齿硬组织的表面形态、改变釉质和牙本质的晶体结构、促进牙齿硬组织对氟的吸收而被应用于预防龋病。