A restraint effect of dental caries of a Dual wave length laser

双波长激光设备通过激光二极管激活Nd: YAG激光器。它是将光参量振荡器中的一个波长进行输出转换，得到两个波长的激光的设备。利用该装置可同时在两个波长处产生更多波长面积为4.0μm的激光。3μm波段与Er:YAG波长相同，波长为2.94μm，能有效去除牙硬组织。因此，我在2μm波段变成了1.61μm。该设备通过光纤和手和平在两个波长同时输出。该设备在2.94μm的龋牙本质切割中显示出足够的切割能力。然而，牙本质，牙釉质没有提供足够的切割性能。在需要使用大容量光参量振荡器时，建议采用高输出。对一只狗的牙齿进行造牙后，牙髓出现少量炎症变化，效果较好。双波长激光切割牙硬组织具有安全切割的特点，但对牙釉质的切割效率较低。

Dual wave length laser equipment activates Nd : YAG laser by a laser diode. It is the equipment which the output converts a wavelength in an optical parametric oscillator, and get a laser of two wavelengths. It is getting laser light of wavelength area of 4.0μm from 1.6 by this and the equipment which can occur more at two wavelength same time. The 3μm band set it for a wavelength of 2.94μm the same as Er:YAG which could go away effectively which cut dental hard tissue. On this account I became 1.61μm in 2μm band.This equipment output it through optical fiber and hand peace at two wavelength same time. This equipment showed enough cut ability in cut of caries dentin at 2.94μm. However, the dentin, the enough cut performance of tooth enamel were not provided. It was suggested to get the high output when it was necessary to use a big optical parametric oscillator of capacity.As a result of having done cavity formation on a tooth of a dog, there were a few inflammatory changes of pulp of tooth and showed superior results. It was more recognized that cut of dental hard tissue with a dual wave length laser showed safe cut characteristics although the efficiency was inferior for enamel than this.