This volume provides an eloquent review of the anatomy and physiology of phonation, the work-up of patients with voice disorders, basic evaluation of wind instrument performance and dysfunction, and a full description of the most common skeletal and non-skeletal dentofacial anomalies, including their means of diagnosis and treatment. This is followed by a comprehensive review of literature on the vocal and acoustic features of affected patients, as well as the special considerations in wind instrumentalists. The effect of orthodontic therapy/ orthognathic surgery on voice, associated upper airway changes, and wind instruments performance is emphasized. The information provided in this book will heighten the patients , therapists , teachers and physicians awareness of the vocal characteristics and wind instrumentalists concerns often associated with these conditions.