Some babies are born with tongue-tie where an unusually short or tight band of tissue tethers the bottom of the tongue to the floor of the mouth. Babies with tongue-tie can have a hard time breastfeeding. We hypothesize that with a lingual frenotomy, a surgical procedure where the surgeon releases the tether, patients demonstrate improved upward mobility of the tongue and improved sucking mechanics. We will test this using an FDA-approved bottle that measures suck quality.