DD3 had her upper frenulum released today by laser. It was over in a matter of seconds. The dentist said there would be a tiny bit of pain and yes, DD3 cried for about a minute. There was no blood at all and we were in & out of the clinic in about 15 minutes all up. I don't know that it has made much difference as yet. The dentist did say it will now stretch more and pull up in the coming weeks and by the time she gets her adult teeth through, everything will be normal. It only cost $100.
DD3 had a breastfeed straight after getting it done and seemed to be a little confused for a second about her latch, but worked it out and was fine. About 1/2 hr after having it done, she had some lunch and there were no issues at all.