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There are three conditions I have found which warrant a Frenotomy in a newborn: 1) Failure to achieve a latch after much effort by a skilled LC, 2) a latch which remains painful despite the best effort to reposition the infant and use of the asymmetric latch, and 3) the infant latches and feeds briefly then comes off the breast with a click or cluck sound and must be repeatedly relatched to finish the feeding. The last problem is due to an elastic frenulum (much like a bungee cord) that can be stretched to the latch position but requires much effort by the infant to do so. When the infant tires, the tongue snaps back, the suction is broken, and the infant slides off the breast.
In the few studies on newborn ankyloglossia done to date, the incidence of any ankyloglossia is about 4% and about half of these interfere to some extent with breastfeeding. Few newborns with ankyloglossia have trouble with formula feeding. There are no studies following infants with and without ankyloglossia from birth to determine which, if any, lingual frenulum results in a speech defect of a degree that requires therapy. One ongoing study in Australia2 demonstrated that most of those children presenting to a speech therapist with a lingual frenulum and speech defect benefited from release of the frenulum. Thus there is no way currently to know if lysis of the lingual frenulum in the newborn might be protective of developing a speech defect.
In Summary, the lingual frenulum is noted to be a significant anatomic structure in about 4% of newborns of whom about half have difficulty with breastfeeding and are improved by Frenotomy or Frenulectomy. Those who will
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benefit from these procedures cannot be determined by anatomic appearance alone and functional assessment of the tongue is a complex undertaking. The best predictor of outcome from Frenotomy appears to be direct observation of the infant by a person skilled in breastfeeding assistance. Regardless of lingual frenulum appearance, the infant who latches well without pain to the mother and obtains good milk transfer in one continuous feeding session requires no intervention at this time. An in-depth study to determine the exact incidence of each type of lingual frenulum, the clinical significance of each for breastfeeding and speech is needed. I hope to be the principal investigator of such a study beginning within the next year. Further information about this problem and specific advice for performing a Frenotomy can be found in the summer 2004 Edition of the AAP Section on Breastfeeding Newsletter article by Elizabeth Coryllos, MD et al3 at www.aap.org.
Hazelbaker, AK. Assessment Tool for Lingual Frenulum Function. Columbus, OH: Privately printed; 1992
Fernando, C. Tongue Tie, from confusion to clarity, a guide to the diagnosis and treatment of Ankyloglossia (Tongue Tie). Tandem Publications, Sydney, Australia. 1998
Coryllos, MD, IBCLC, Watson Genna, Catherine, BS, IBCLC, Salloum, Alexander C, MD, MA, American Academy of Pediatrics, Section on Breastfeeding, Summer 2004.
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