Journal
APPLIED ERGONOMICS
Volume 97, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.apergo.2021.103519
Keywords
Muscle activity; Posture; Dental ergonomics; Stool; Seated posture
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The study investigated the effect of different stool types on cervicothoracic muscle activity and posture during a dental procedure. The results indicated that there were no differences in muscle activity and posture between the three stools. Although lumbar posture and muscle activity may be influenced by stool type, the differences were not observed in the cervicothoracic region.
It has been shown that the type of stool influences lumbar posture and muscle activity during dental work. Studies investigating the effect on cervicothoracic muscle activity and posture are scarce though. The present study investigated the effect of different stool types on cervicothoracic muscle activity and posture during a dental procedure. Twenty five participants completed a simulated periodontal screening whilst sitting on the Ghopec, Salli MultiAdjuster saddle and A-dec dental stool. Muscle activity of M. Splenius Capitis, M. Sternocleidomastoideus, M. Trapezius Pars Descendens and M. Trapezius Pars Ascendens was measured using surface electromyography. Cervicothoracic posture was evaluated by means of a strain gauge (BodyGuardTM) fixed between C5 and T2. No differences in muscle activity and posture were found between the three stools. Although the type of stool influences lumbar posture and muscle activity, it seems these differences are not continued at the cervicothoracic region.
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