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KMID : 1157520180140030190
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International Journal of Clinical Preventive Dentistry
2018 Volume.14 No. 3 p.190 ~ p.196
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Prevalence and Risk Factors of Neck Musculoskeletal Disorders among Dental Hygienist
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Lee Ka-Yeon
Chun Jong-Ae
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Abstract
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Objective: The purpose of this study was to investigate the prevalence and risk factors of neck musculoskeletal disorders in dental hygienists.
Methods: A questionnaire survey was conducted on 266 dental hygienists currently working at the dental clinics in Busan.
Results: Work intensity of the subjected dental hygienists considered as high with over 8 daily working hours (59.0%), six weekly working days (57.9%), and executing night duty (77.8%). Among 256 cases excluding 10 subjects who had the past history, 180 cases (70.3%) had subjective pain and 80 cases (44.4%) of the 180 cases had pain sustained over one week, and the prevalence of neck musculoskeletal symptoms according to National Institute of Occupation Safe for Health /Korean Occupational Safety and Health Agency criteria was 124 cases (48.4%). The prevalence were significantly higher in case of over 8 daily working hours (53.7%) than under 8 hours (41.3%) (p=0.065), over 45 degree neck bending (55.0%) than under 45 degree (35.3%) (p=0.005), both neck inclined or tilted (63.8%) than either one (p=0.024), and more fixed posture (53.3%) than rather free (39.6%) (p=0.048). As result of multiple logistic regression analysis, over 45 degree neck flexion (odds ratio [OR]=1.87, 95% confidence interval [CI]=1.06-3.30) and fixed posture (OR=1.93, 95% CI=1.01-3.68) significantly affected the neck musculoskeletal disorders.
Conclusion: In summary, in order to decrease the risk of neck musculoskeletal disorders among dental hygienist, correct the habitual neck bending and tilting behaviors would be strengthened and a proper guide that efficiently release the state of bending and keeping fixed state would be needed.
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KEYWORD
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dental hygienist, musculoskeletal diseases, neck, prevalence, risk factor
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