골격성 II급 부정교합 및 혀 내밀기 습관을 가진 성장기 환자의 교정치료와 근기능 요법

Orthodontic Treatment and Myofunctional Therapy for an Adolescent with Skeletal Class II Malocclusion and Tongue Thrusting Habit

A 12-year and 5-month-old adolescent girl showed skeletal Class II pattern with mandibular retrusion, severe protrusion of the maxillary incisors, open bite, convex profile, mouth breathing, tongue thrusting habit, and hyperactive mentalis muscle activity. Orthodontic treatment goals were to improve a facial esthetics and eliminate a tongue thrusting habit. To achieve a facial esthetics, Tweed-Merrifield Directional force technique was applied after extraction of four first premolars. Myofunctional therapy and linguomyoplasty were applied to correct the tongue posture and swallowing pattern. Consequently, a favorable facial esthetics with the functional occlusion were obtained.