口腔外科手術におけるNd-YAGレーザーの使用

抄録

A compact Nd-YAG laser (OSADA YAG LASER) was employed in surgical treatments of oral lesions in twelve cases.
The treatments were extirpations of hemangiomas (3 cases), excision of lymphangioma (1 case), extirpation of cyst (1 case), resections of oral malignancies (6 cases) and mucosal incisions in surgical orthspedics (1 case).
The equipment was small-sized and improved on the handpiece in comparison with those heretofore in use.Two types of heads (non-contact type and contact type) were provided for the handpiece.
The non-contact heads, which have a lens in the tip, showed high ability as a coagulator. It enabled perfect control of hazardous bleeding during the excision of cavernous hemangiomas.On the irradiated surface, a dense layer of heat degeneration covered by carbon deposit was observed.
The contact heads with a sharp-pointed quartz tip at the end showed high performance as a scalpel.The sense of touch resembled that of a electrosurgical unit.The cut margin was sharp and clean with minimal heat degeneration and little carbon deposit.In the partial glossectomy, it was free from uncomfortable muscle contracture or bleeding. The sutured wound of which margin cut with the contact head healed in ordinary manner.No delays of healing or rupture of the wound were observed.The microscopic finding on the cut margin also manifestatcd the characteristic difference in mode of action between the both types.
It was recognized that the compact Nd-YAG laser with two head types (contact type and non-contact type) is very useful for oral surgery.