Lingual frenectomy
A lingual frenectomy is the removal of a band of tissue (the lingual frenulum) connecting the underside of the tongue with the floor of the mouth.
The removal of the lingual frenulum under the tongue can be accomplished with either frenectomy or frenuloplasty. This is used to treat a tongue tied patient. The difference in tongue length is generally a few millimeters and it may actually shorten the tongue, depending on the procedure and aftercare. If the lingual frenulum, at full extension of the tongue, isn't tense against the two front bottom teeth, there is little chance for any extension by its removal.