This study describes the treatment of 2989 patients with different type of lasers. The argon laser beam was used in 57 cases for procedures ranging from portwine stains, telangiectasias, and angiofibromas to other vascular lesions. Eighty-four operations including treatment of leukoplakia and hemangioma were performed using the Nd YAG laser. An additional 53 operations were performed using the combined Nd:YAG laser beam and 2795 operations were done using the carbon dioxide laser on precancerous states and other white lesions, benign tumors and tumor-like states, malignant tumors, and other lesions. The laser procedures were performed under local anesthesia. Operations were rapid and bloodless yielding both excellent cosmetic and functional results. The experience gained with this group of patients suggests that the ideal cases for laser treatment were leukoplakia, hemangiomas, and other vascular tumors and lesions of the face and the oral cavity, and clotting disturbance.
The experience obtained with 789 laser interventions used in oral surgery is summarized. In the first group, 756 patients were operated on by CO 2 laser, in the second, 17 were treated with Nd:YAG laser, and in the third, 16 were treated simultaneously with both types of lasers. Among the outpatient interventions performed under local anesthesia were 233 precancerous conditions, 491 benign tumours, and 65 other lesions. Following CO 2 laser interventions, the zone of the irreversible tissue damage did not exceed 300 mum in the instance of high energy cutting; it was almost 1 mm following Nd:YAG laser cutting, and it was 500 mum when cut by a combined laser beam. The precancerous conditions can successfully be treated by CO 2 laser, especially by evaporation. The Nd:YAG laser leaves a broad necrotic zone. The combined application, however, is highly advantageous to treat vascular lesions and markedly hemophilic structures/hemangioma, epulis, tongue resection, and so forth. In oral surgery the combined use of the CO 2 and Nd:YAG laser beams is extremely beneficial due to their excellent hemostatic effect.
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