Journal article

Publication year: 1988

Pages: 393-404

Journal: American Journal of Orthodontics and Dentofacial Orthopedics

Volume number: 94

Issue number: 5

ISSN: 0889-5406

eISSN: 1097-6752

DOI Link: https://doi.org/10.1016/0889-5406(88)90128-X

Publisher: Elsevier

Abstract: 
Synchronized electromyography and videofluorography (lateral projection) were used to investigate the influence of altered head posture on hyo-mandibular movements, suprahyoid muscle length, suprahyoid working angle, and timing of suprahyoid and masseter muscle activity. Twelve adult male subjects with normal dentofacial morphology were investigated during the open-close-clench cycle. Using upright head position (Frankfort horizontal) as reference, several statistically significant observations were made during forward flexion and backward extension of the head. The results indicate that head posture is a significant factor in studies of mandibular and hyoid bone movements, and masseter and suprahyoid muscle function.

Harvard Citation style: WINNBERG, A., PANCHERZ, H. and WESTESSON, P. (1988) HEAD POSTURE AND HYO-MANDIBULAR FUNCTION IN MAN - A SYNCHRONIZED ELECTROMYOGRAPHIC AND VIDEOFLUOROGRAPHIC STUDY OF THE OPEN-CLOSE-CLENCH CYCLE, American Journal of Orthodontics and Dentofacial Orthopedics, 94(5), pp. 393-404. https://doi.org/10.1016/0889-5406(88)90128-X

APA Citation style: WINNBERG, A., PANCHERZ, H., & WESTESSON, P. (1988). HEAD POSTURE AND HYO-MANDIBULAR FUNCTION IN MAN - A SYNCHRONIZED ELECTROMYOGRAPHIC AND VIDEOFLUOROGRAPHIC STUDY OF THE OPEN-CLOSE-CLENCH CYCLE. American Journal of Orthodontics and Dentofacial Orthopedics. 94(5), 393-404. https://doi.org/10.1016/0889-5406(88)90128-X