Pulsed-dye laser and long-pulsed-dye laser have not yet been evaluated in CMTC, but neither argon laser therapy nor YAG laser therapy has been helpful.
The passage states that pulsed-dye lasers and long-pulsed-dye lasers haven't been used in CMTC (presumably a medical treatment setting) and that neither argon laser therapy nor YAG laser therapy have shown any positive results.