AIM: To evaluate long-term neuromuscular adaptation with the flexible fixed functional appliance. PATIENTS AND METHODS: Electromyography (EMG) was performed on 15 young, growing females with Class II Division 1 malocclusion treated with a flexible fixed functional appliance. Bilateral EMG activity from the anterior temporalis and masseter muscles was monitored longitudinally to determine changes in posture, swallowing, and maximum voluntary clenching during a 24-month observation period. RESULTS: There was a significant decrease in EMG activity during saliva swallowing (p < 0.05) and maximum clenching (p < 0.05 at 3 months and p < 0.01 at 1 month after treatment); this persisted for up to 1 month but gradually returned to pre-appliance levels near the end of 6 months. It remained stable from then on until the end of the observation period (24 months). CONCLUSION: The anterior temporalis and masseter muscles clearly responded to appliance therapy. The neuromuscular adaptation documented after 6 months of treatment remained stable over a 24-month observation period.
AIM: To evaluate long-term neuromuscular adaptation with the flexible fixed functional appliance. PATIENTS AND METHODS: Electromyography (EMG) was performed on 15 young, growing females with Class II Division 1 malocclusion treated with a flexible fixed functional appliance. Bilateral EMG activity from the anterior temporalis and masseter muscles was monitored longitudinally to determine changes in posture, swallowing, and maximum voluntary clenching during a 24-month observation period. RESULTS: There was a significant decrease in EMG activity during saliva swallowing (p < 0.05) and maximum clenching (p < 0.05 at 3 months and p < 0.01 at 1 month after treatment); this persisted for up to 1 month but gradually returned to pre-appliance levels near the end of 6 months. It remained stable from then on until the end of the observation period (24 months). CONCLUSION: The anterior temporalis and masseter muscles clearly responded to appliance therapy. The neuromuscular adaptation documented after 6 months of treatment remained stable over a 24-month observation period.
Authors: B J Sessle; D G Woodside; P Bourque; S Gurza; G Powell; J Voudouris; A Metaxas; G Altuna Journal: Am J Orthod Dentofacial Orthop Date: 1990-09 Impact factor: 2.650
Authors: Bruno D'Aurea Furquim; Guilherme Janson; Laura de Castro Cabrera Cope; Karina Maria Salvatore Freitas; José Fernando Castanha Henriques Journal: Dental Press J Orthod Date: 2018 May-Jun