Quintana E, Márquez F, Roca I, Torres V, Salgado J
Depto. de Biología Animal, Universidad de Valencia, Burjassot, Spain.
Lasers Surg Med. 1992;12(2):131-6. doi: 10.1002/lsm.1900120204.
The enamel surface layer of some human teeth was treated with the low-energy Nd:YAG laser at 8 mJ pulse energy. These samples were previously etched with 0.05 M orthophosphoric acid to reduce the surface reflection. The treated samples, as well as the control samples, were widely studied by scanning electron microscopy, and, in the lased group, significant morphologic changes affecting the enamel surface were observed. Those changes reveal principally the loss of the typical surface structure of the acid-etched enamel. The hydroxyapatite prisms were not discernible, and there was a decrease in the roughness of the lased surface enamel. These laser-induced structural changes may be related to the increased resistance to the calcification reported by many authors.
一些人类牙齿的釉质表层用脉冲能量为8 mJ的低能量钕钇铝石榴石激光进行了处理。这些样本之前用0.05 M正磷酸进行了蚀刻，以减少表面反射。通过扫描电子显微镜对处理过的样本以及对照样本进行了广泛研究，在激光处理组中，观察到影响釉质表面的显著形态变化。这些变化主要表现为酸蚀釉质典型表面结构的丧失。羟基磷灰石棱柱无法辨认，激光处理后的表面釉质粗糙度降低。这些激光诱导的结构变化可能与许多作者报道的钙化抗性增加有关。
