[Tongue tie: to cut or not to cut?].

Cleavage of tongue tie (ankyloglossia) in newborns is controversial and has known varying degrees of popularity over time. The last decade frenotomy is advocated and increasingly performed in infants with breastfeeding problems. However, evidence for an association between ankyloglossia and breastfeeding is dubious. Moreover, evidence for the effect of frenotomy on breastfeeding is lacking. Well-conducted controlled trials are sparse and methodological quality of reported trials is weak and merely hindered by lack of equipoise. Thus, the tongue tie and frenotomy are prone for overdiagnosis and overmedicalization. Until robust, well conducted, randomized controlled trials have been performed frenotomy should not routinely nor easily be recommended.