I guess it takes years of college training to be able to operate the lazers....and 4 are needed in dentistry and cost about a 100 grand each...

From what I read, it seems these lazers can be tuned to evaporate the old filling metals and dead tooth and leave the live tooth material and then they fill the hole with a calcium type of material differant than conventional filling material, etc........I learned of lazer after I had my teeth removed, so never have seen it done or any experience...all I know is it is geared for wealthy people.

MH