Table 1.

Anatomic Classification Types and Preoperative Frequency for the Overall Cohort (n = 237).

	Definition	No. (%)
Kotlow upper lip‐tie classifications
Class I	No significant attachment	0 (0%)
Class II	Attachment mostly into the gingival tissue	2 (1%)
Class III	Attachment in front of the anterior papilla	109 (46%)
Class IV	Attachment into the papilla or extending into hard palate	126 (53%)
Coryllos tongue‐tie classifications
Type I	Attachment of the frenulum to tip of tongue	12 (5%)
Type II	Attachment is 2–4 mm behind tip of tongue/on or behind alveolar ridge	40 (17%)
Type III	Attachment to midtongue/middle of the floor of the mouth	76 (32%)
Type IV	Attachment against base of tongue, thick and inelastic	109 (46%)