Tongue tie has become more widely discussed in parenting communities and more frequently diagnosed in recent years, and with that increased awareness has come both improved identification of genuinely impactful cases and the risk of over-diagnosis. A tongue tie identified on a scan or visual inspection is not automatically a problem that requires treatment; a tongue tie is clinically significant when it restricts tongue function in a way that affects feeding, speech, or other activities, and the assessment of function requires more than a visual examination.
Understanding what tongue tie is, how it affects feeding (and when it does not), what the diagnostic assessment involves, and what treatment consists of helps parents navigate this confusing area with more clarity.
Healthbooq supports parents through the challenges of early infant feeding, including the impact of tongue tie and the pathway to assessment and treatment.
What Tongue Tie Is
Tongue tie (ankyloglossia) is a congenital condition in which the lingual frenulum — the band of tissue that runs along the midline of the floor of the mouth and attaches to the underside of the tongue — is unusually short, thick, or tight, restricting the tongue's range of motion. The restriction may prevent the tongue from extending fully beyond the lower gum ridge, elevating to the palate, or lateralising (moving side to side).
Tongue tie exists on a spectrum of severity. Posterior tongue tie — where the frenulum is less visible, being attached further back in the floor of the mouth — is harder to see and has been a source of diagnostic controversy; the evidence for its functional significance is less clear than for anterior (visible) tongue tie.
Impact on Breastfeeding
The tongue plays a central role in effective breastfeeding. For a baby to latch effectively, the tongue needs to extend over the lower gum ridge, cup the breast, and create peristaltic movements to draw milk. A tongue whose movement is significantly restricted may not achieve this, resulting in a shallow latch, difficulty transferring milk efficiently, and — as a consequence of the shallow latch — nipple pain or damage in the breastfeeding parent.
Signs that tongue tie may be affecting breastfeeding include: persistent difficulty achieving and maintaining a deep latch; clicking sounds during feeding (suggesting the baby is losing suction and re-latching); painful or damaged nipples that are compressed, creased, or blanched after feeds; slow weight gain suggesting inadequate milk transfer; a very hungry, unsatisfied, or excessively windy baby; and an increasingly depleted milk supply due to insufficient milk removal.
However, not all tongue ties cause feeding problems, and not all feeding problems in the presence of a tongue tie are caused by it. A feeding assessment by an IBCLC-certified lactation consultant should precede any decision about division, both to assess whether the tongue tie is functionally significant and to address any latch or positioning issues that may be contributing independently.
Assessment and Treatment
Tongue tie assessment involves both visual examination and assessment of functional tongue movement. Validated tools such as the ATLFF (Assessment Tool for Lingual Frenulum Function) or the Hazelbaker Assessment Tool assess tongue function rather than just appearance.
Tongue tie division (frenotomy) is a simple procedure in which the frenulum is divided with scissors or laser. It is typically performed without anaesthetic in young infants, takes seconds, and has a low complication rate. Most parents and babies report rapid feeding improvement — sometimes within the same feed. Not all divisions produce dramatic immediate improvement; ongoing lactation support is important after the procedure.
Division is most clearly indicated when: functional assessment confirms significant restriction; feeding problems directly attributable to tongue tie are present; and conservative management (lactation support, positioning adjustments) has not resolved the problems.
Key Takeaways
Tongue tie (ankyloglossia) is a congenital condition in which the frenulum — the band of tissue connecting the underside of the tongue to the floor of the mouth — is unusually short or tight, restricting tongue movement. It is present in around five percent of newborns. Not all tongue ties affect feeding; the functional impact depends on the degree of restriction. When tongue tie is causing feeding difficulties (poor latch, painful breastfeeding, poor weight gain, nipple damage), division (frenotomy) is a simple and rapidly effective procedure. Diagnosis should be made by an experienced IBCLC lactation consultant or trained health professional, as both over- and under-diagnosis are common.
