Abstract
Cure-rates and phonatory functions following Nd : YAG laser surgery were compared with those following CO2 laser surgery. The results were as follows. 1) There were no differences in the curerate between the two types of lasers. 2) The maximum phonation time and the range of fundamental frequency in patients treated with Nd : YAG laser were smaller than those treated with CO2 laser. The mean air flow rate, intensity of voice and acoustical analysis showed no differences between the two lasers. This means that as far as comfortable phonation is concerned, there is little difference between two lasers. We conclude that the treatment of laryngeal cancer with Nd : YAG laser would be a pertinent choice when CO2 laser is not near at hand.
