Indirect measurement instruments for assessment and feedback rehabilitation of velopharyngeal dysfunction in children aged 2 to 12 years: protocol for a systematic scoping review
The velopharyngeal dysfunction is characterized by resonance disorder: the voice resonates improperly in the nasal cavity due to poor closure of the velopharyngeal sphincter. There are three types of velopharyngeal dysfunction: velopharyngeal insufficiency, velopharyngeal incompetency and velopharyngeal mislearning. This systematic scoping review explores the available and effective measurement tools for assessing and/or feedbacl rehabilitating of velopharyngeal dysfunction in children aged 2-12 years. We focus on the study of indirect aerodynamic and acoustic measuring instruments, with the exception of accelerometry, which is considered unsuitable for young children.