Neuromuscular adaptations with flexible fixed functional appliance--a 2-year follow-up study.

Autor: Sood S; Department of Orthodontics and Dentofacial Orthopedics, H.P. Government Dental College & Hospital, 171001, Shimla, H.P., India. drsankalpsood@gmail.com, Kharbanda OP, Duggal R, Sood M, Gulati S
Jazyk: English; German
Zdroj: Journal of orofacial orthopedics = Fortschritte der Kieferorthopadie : Organ/official journal Deutsche Gesellschaft fur Kieferorthopadie [J Orofac Orthop] 2011 Nov; Vol. 72 (6), pp. 434-45. Date of Electronic Publication: 2011 Nov 30.
DOI: 10.1007/s00056-011-0048-x
Abstrakt: 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.
Databáze: MEDLINE
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