Between 1997 and 2012, the diagnoses of ankyloglossia and the indication for frenotomy increased by ˃800%. About 38% of diagnosed cases are surgically treated. Breastfeeding promotion includes evaluating maternal hereditary and personal history of breastfeeding, breast structure, endocrinological physiology, emotional well-being of the mother, breastfeeding technique, quality and quantity of milk, and the newborn's ability to latch on and suckle. Frenotomy would be indicated when restriction of tongue function causes difficulties that have not resolved after thorough evaluation and counseling to correct other causes. Frenotomy can have complications: feeding and respiratory difficulties, pain, weight loss, vascular or nerve damage, and delayed diagnosis of other underlying pathologies. It does not always solve breastfeeding difficulties. Interdisciplinary teamwork reduces the frequency of unnecessary frenotomies.