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Photo-coagulation of hemangioma in the oral region by KTP laser: Report of three cases
Tadaharu Kobayashi, Tsutomu Nomura, Maski Kohno, Susumu Shingaki, Tamio Nakajima
First Department of Oral and Maxillofacial Surgery, School of Dentistry, Niigata University
(Chief: Prof. Tamio Nakajima)
Abstract
Three cases of hemangiomas in the oral region which were treated with photo-coagulation by KTP laser were reported. The KTP laser is a pure green light in the visible portion (532nm) of the electromagnetic spectrum and has unique characteristics such as high absorption by hemoglobin, negligible absorption by water and a relatively shallow depth of penetration, which are ideal for photo-coagulation of hemangioma. The first case was a 38-year-old female with a superficial hemangioma of the upper lip. The second case was a 43-year-old female with a superficial hemangioma of the lower lip. The third case was a 55-year-old male with multiple hemangiomas of the lips, right cheek and tongue. With the patients under local anesthesia, the hemangiomas were treated with l.5 w of KTP laser irradiation. In the first two cases, the tumors completely disappeared with very mild scarrings postoperatively. In the case with multiple hemangiomasCthe superficial portions of the hemangiomas decreased in size and spontaneous bleeding was not encounteredCbut the deeper portions remain unchanged. The results suggested that the KTP laser is effective for the treatment of superficial hemangioma.