Classification allows practitioners dealing with tongue-tie to better communicate. The most common classification is the one proposed by Coryllos et al in 2004 and published under the auspice of the American Academy of Pediatrics.
Model by Dr. Elisabeth (Betty) Coryllos.
Please note that the different types do not represent severity or grades.
Classical (anterior) lingual frenulum:
Type 1 is the attachment of the frenulum to the tip of the tongue, usually in front of the alveolar ridge in the lower lip sulcus:
Type 2 is two to four mm behind the tongue tip and attaches on or just behind the alveolar ridge:
Type 3 tongue-tie is the attachment to the mid-tongue.
Type 4 is essentially against the base of the tongue, and is thick, shiny and very inelastic:
© Pictures on the webpage were taken by, and are copyrighted to Eyal Botzer DMD