Case series of 148 tongue-tied newborn babies evaluated with the assessment tool for lingual frenulum function.

OBJECTIVE: the Assessment Tool for Lingual Frenulum Function (ATLFF) is the only available tool designed to assess newborn babies for the severity of tongue-tie. The aim of this study was to describe the ATLFF scores obtained on a series of 148 tongue-tied newborn babies. DESIGN: prospective case series. SETTING: a 420-bed community hospital in St. Paul, Minnesota, USA. PARTICIPANTS: newborn babies admitted to the normal newborn nursery from October 1, 2000 to May 1 2002. MEASUREMENTS AND FINDINGS: all babies in the nursery were examined for tongue-tie. One-hundred and forty-eight tongue-tied babies were examined using the ATLFF by at least one of three examiners. The ATLFF could not be completed on five babies. Of the remaining babies, 40 (28%) received 'perfect' scores, five (3.5%) received 'acceptable' scores, and 19 (13.3%) received 'function impaired' scores. The remaining 79 (55.2%) babies received scores that did not fall into any of the three categories of scores. The inter-rater agreement on whether or not the baby had a score of 'function impaired' on the ATLFF was moderate (kappa=0.44). KEY CONCLUSIONS AND IMPLICATIONS FOR PRACTICE: few tongue-tied babies had a score of 'function impaired' on the ATLFF. It is a major limitation of the ATLFF that it does not classify most babies. The development and testing of a useful tool to determine which tongue-tied babies will have difficulty with breast feeding remains a research priority.

Newborn tongue-tie: prevalence and effect on breast-feeding.

OBJECTIVE: The purposes of this study were: (1) to determine whether breast-fed infants with tongue-tie have decreased rates of breast-feeding at 1 week and 1 month of age, (2) to determine the prevalence of tongue-tie, and (3) to test the usefulness of the Assessment Tool for Lingual Frenulum Function (ATLFF) in assessing the severity of tongue-tie in breast-feeding newborns. METHODS: A case-control design was used. All infants in the Regions Hospital newborn nursery were examined for tongue-tie. Tongue-tied babies were examined using the ATLFF. Two breast-feeding babies with normal tongues were identified and matched for each case. Mothers were interviewed when the babies were 1 week and 1 month old. RESULTS: The prevalence of tongue-tie was 4.2%. Forty-nine tongue-tied and 98 control infants were enrolled. Tongue-tied babies were 3 times as likely as control babies to be bottle fed only at 1 week [risk ratio (RR), 3.11; 95% confidence interval (CI), 1.21, 8.03) By 1 month, tongue-tied babies were as likely as controls to be bottle fed only. (RR, 1.00; 95% CI, 0.55, 1.82) Twelve of the tongue-tied infants had ATLFF scores of "Perfect," none had scores of "Acceptable," and 6 had scores of "Function Impaired." The remaining 31 infants had scores that fell into none of these categories. CONCLUSIONS: Tongue-tie is a relatively common condition in newborns. Affected infants are significantly more likely to be exclusively bottle-fed by 1 week of age. The ATLFF was not a useful tool to identify which tongue-tied infants are at risk for breast-feeding problems.