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| Soft-tissue laser surgery ： ウィキペディア英語版 |
Soft-tissue laser surgery
In soft-tissue laser surgery, a highly focused laser beam vaporizes the soft tissue with the high water content. The laser makes small incisions when the beam is focused on the tissue: the focal spot size can be as small as 100 µm, but the most widely used in practice is 400 µm. When the beam is defocused, the intensity of the laser light on the tissue diminishes, and it can be used for cauterization of small blood vessels and lymphatics, therefore decreases post-operative swelling.
==Surgical applications==
Soft-tissue laser surgery is used in a variety of applications in human (general surgery, neurosurgery, ENT, dentistry,and oral and maxillofacial surgery) as well as veterinary 〔http://www.veterinary-laser.com/state-of-art-laser-surgery.php Veterinary laser surgery, URL accessed March 25, 2008〕 surgical fields.
A laser beam has a natural sterilization effect: it evaporates bacteria, viruses and fungi, which leads to a decrease in local infections. Probably most important, the laser decreases post-operative pain by sealing nerve endings.
Soft-tissue laser surgery is differentiated from hard-tissue laser surgery (bones and teeth in dentistry ) and laser eye surgery (eyesight corrective surgeries 〔http://www.fda.gov/cdrh/lasik/ URL accessed March 25, 2008〕) by the type of lasers used in a particular type of laser surgery.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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