[Comparative study on wound healing in the oral cavity following experimental surgery using a scalpel, electrocauterization and CO2 laser beam].

In the mouth cavity of white rats lesion was created by means of surgical scalpel and electrokauter the course of the wound healing was observed on basis operations of various types (coagulation, vaporization, excision) as well as scalpel and electrokauter the course of the wound healing was observed on basis of histological examination of biopsies taken on the second, fifth, tenth, twentieth and fortieth day. It was verified that the wound healing is excellent after all three types of laser surgical intervention and is significantly more favourable than in case of electrokauter. The course of healing is finished during 3 weeks after coagulation and vaporaziation, and during 4 weeks after excision. The new epithelium layer became thinner than the original while the submucosa became twice as thick. The laser treated surfaces are protected by coagulation proteins, the wound edges are sharp, the amount of the cicatrice tissue formed after the wound healing is less than after the employment of the scalpel and the electrokauter.