Hi Zeev, I have heard the laser is used in root canal procedures. Here's some case studies on it, from BLTI's web site. Have seen some dentist's comments saying it works just fine.
Endodontics
Complete Root Canal Therapy using the Waterlase YSGG By Dr. James Jesse
Dental Products Report, June 2002 issue.
YSGG Laser Root Canal Therapy By Dr. William Chen
Dentistry Today, May 2002 issue.
Er,Cr:YSGG Laser Root Canal Procedure: A Case Report By Dr. William Chen
Endodontic Therapy, May 2002 issue.