The aim of this clinical study was to describe the possibility of using the Nd:YAG laser device utilized in the dental offices to weld metals intraorally. The authors, before applying this technique “in vivo” on human subjects, tested the “in vitro” metal welding efficacy of dental Nd:YAG device firstly by interferometry, SEM, and EDS and subsequently by thermal camera and thermocouples in order to record temperature changes during the welding process on bovine jaws. Four implants were inserted in the edentulous maxillary arch of a 67 years old male patient. Immediately after that, a bar previously made by the dental technician was intraorally welded to the abutments by Nd:YAG laser (Fidelis Plus III, Fotona, Slovenia) with these parameters: 9.90 mJ, 1 Hz, 15 msec, 0.6 mm spot. Then the prosthesis was connected to the bar with four OT Caps. This clinical study, even if preliminary, suggests that laser welding technique may be intraorally used without side effects.
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机译：这项临床研究的目的是描述使用在牙科诊所使用的Nd：YAG激光设备进行口内金属焊接的可能性。作者在将这种技术“体内”应用于人体之前，首先通过干涉测量，SEM和EDS，然后通过热像仪和热电偶测试牙科Nd：YAG设备的“体外”金属焊接功效，以记录温度。在牛颚上的焊接过程中发生变化。将四枚植入物插入一名67岁男性患者的无牙上颌弓。之后，立即用Nd：YAG激光（Fidelis Plus III，Fotona，斯洛文尼亚）将先前由牙科技师制造的棒经口内焊接到基台上，这些参数为：9.90 mJ，1 Hz，15 msec，0.6 mm斑点。然后用四个OT帽将假体连接到钢筋。这项临床研究，即使是初步的，也表明可以口服使用激光焊接技术而无副作用。
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