van Benthem H, Vahl J
Dtsch Zahnarztl Z. 1978 Apr;33(4):262-6.
The investigation was undertaken to establish the place of lasers as tools in the dental technical laboratory. Tests were undertaken to study resistance to tears in laser welded dental metal alloys. (Degudent U, Degulor M of Fa. Degussa.) Availabel as laser apparatus were a cw Nd:YAG-laser (400 Watt capacity) and a pulse Nd:YAG-laser (max. 45 pulse energy, 9.2 pulse length). Welding tests on models with both lasers resulted in higher resistance to tears than was achievable by conventional soldering processes. Furthermore it could be shown that in certain alloy compositions, used in our experiments, welding by the cw process resulted in greater resistance to fissuring than by the pulse process. By adopting the alloy as well as the preparation of appliances to the laser process we feel that markedly superior results can be achieved as we describe in this first communication.
开展此项研究是为了确定激光在牙科技术实验室作为工具的地位。进行了测试以研究激光焊接牙科金属合金的抗撕裂性。（德国迪古萨公司的Degudent U、Degulor M）可用的激光设备有一台连续波Nd:YAG激光（功率400瓦）和一台脉冲Nd:YAG激光（最大脉冲能量45，脉冲长度9.2）。对两种激光在模型上进行焊接测试，结果显示其抗撕裂性高于传统焊接工艺。此外，可以表明，在我们实验中使用的某些合金成分中，连续波工艺焊接比脉冲工艺焊接产生的抗裂性更强。通过采用合适的合金以及使器械制备适应激光工艺，我们认为能够取得显著更优的结果，正如我们在这第一篇通讯中所描述的那样。
