What is the surgical procedure involved in tongue-tie ankyloglossia?

Simple: The band of tissue that tethers the tongue to the floor of mouth is divided. There are many ways to do this division (scissors, cautery). Sometimes that is all that is needed. Sometimes the doctor will place a few dissolvable stitches to help it heal properly. In children, we often will do this in the or with sedation. In older kids or adults, this can often be done in the office.

Easy overall: Generally, in young babies this is done with a snip in clinic under local anesthetic. In older babies and young children it is done in the operating room with anesthetic gas and a snip, possibly with melting sutures. In teens and adults, it can often be done in clinic with some numbing medicine and a snip. I'd put a few melting stitches as well. You can return to work right after.