“…Therefore, it is important to take into account both anatomical and functional criteria when classifying ankyloglossia [5,6]. The speech therapy diagnostic protocol also tests the functions of the tongue, such as sucking, swallowing, biting, and chewing [7,11,12]. However, existing classifications are not always consistent, because they take into account different criteria or different parameters for the same feature [8,[13][14][15].…”