期刊
APPLIED ERGONOMICS
卷 38, 期 5, 页码 525-531出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.apergo.2006.09.002
关键词
dentistry; hand tool; electromyography
资金
- FIC NIH HHS [F06 TW002250-01] Funding Source: Medline
- PHS HHS [T43/CCT 918726] Funding Source: Medline
Work-related upper extremity musculoskeletal disorders, including carpal tunnel syndrome, are prevalent among dentists and dental hygienists. An important risk factor for developing these disorders is forceful pinching which occurs during periodontal work such as dental scaling. Ergonomically designed dental scaling instruments may help reduce the prevalence of carpal tunnel syndrome among dental practitioners. In this study, eight custom-designed dental scaling instruments with different handle shapes were used by 24 dentists and dental hygienists to perform a simulated tooth scaling task. The muscle activity of two extensors and two flexors in the forearm was recorded with electromyography while thumb pinch force was measured by pressure sensors. The results demonstrated that the instrument handle with a tapered, round shape and a 10 mm diameter required the least muscle load and pinch force when performing simulated periodontal work. The results from this study can guide dentists and dental hygienists in selection of dental scaling instruments. (c) 2006 Elsevier Ltd. All rights reserved.
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