Correlation Between Speech Outcomes and the Amount of Maxillary Advancement After Orthognathic Surgery (Le Fort I Conventional Osteotomy and Distraction Osteogenesis) in Patients With Cleft Lip and Palate

Abstract

It was found that speech of the patients with more amount of maxillary advancement tended to get worse. Also, it was observed that there exist some stable ranges of maxillary advancement for speech safety which does not effect on speech. (1∼5 mm in CO group and 9∼10 mm in DO group).