2001 Volume 12 Issue 1 Pages 16-20
Laserthermia, a kind of interstitial hyperthermia, has become available for intraoral application. This paper describes clinical use of laserthermia in our department.
Laserthermia was carried out respectively on five cases of oral cancer. It was applied for one to five days, and was repeated two to eight times/day. A total of 43 applications were given Thermal changes could be recorded by a feedback system in 28 of the 43 applications A temperature level of 42.5-43.5°C was maintained for 15.42±3.80 minutes in 19 applications by 20 minutes of laserthermia. Necrosis or shrinkage of tumor was found in four cases. There was also improvement of local swelling. The tumor failed to response in one case. The heating condition was examined ther mometrically from radiological phantoms. The tissue temperature was found to have rapidly decreased on the outside of the thermocouple heated to 42.5-43.5°C. Temperature monitoring using a thermocouple was considered important to obtain successful results.
In conclusion, laserthermia was found to be applicable to hyperthermia to the treatment of oral cancer.
(J. Jpn. Soc. Laser Dent. 12: 16-20, 2001 Reprint requests to Dr. SHIKIMORI)