Yoshida H, Nagata C, Mirbod S M, Iwata H, Inaba R
Department of Hygiene, Gifu University School of Medicine.
Sangyo Igaku. 1991 Jan;33(1):17-22. doi: 10.1539/joh1959.33.17.
Our review of the literature showed no report on the subjective symptoms of the upper extremities in dental technicians. This study was therefore undertaken on 164 dental technicians in Gifu Prefecture to investigate the relationship between the subjective symptoms of the hands, arms and shoulders and work of dental technicians. The following results were obtained. 1) The prevalence of Raynaud's phenomenon and numbness of the fingers was 5.5 and 18.5 %, respectively. A significant positive correlation was observed between the prevalence and frequency of numbness and cold sensation in the fingers and the daily usage time (h) of high-speed type machines. In addition, pain in the fingers and around the wrists, and pain and numbness in the arms were significantly related to the daily usage time (h) of low-speed type machines. These results suggest that the usage of high- and low-speed type machines may be a cause of vibration syndrome among dental technicians. 2) A high prevalence of pain in the shoulders (30.8%), neck (30.1%), and back (36.3%) was observed in dental technicians. It is considered that these symptoms are related to the working posture and usage of machines.
我们对文献的回顾显示，尚无关于牙科技师上肢主观症状的报告。因此，本研究以岐阜县的164名牙科技师为对象，调查手部、手臂和肩部的主观症状与牙科技师工作之间的关系。获得了以下结果。1）雷诺现象和手指麻木的患病率分别为5.5%和18.5%。手指麻木和冷感的患病率及频率与高速型机器的每日使用时间（小时）之间存在显著正相关。此外，手指和手腕周围的疼痛以及手臂的疼痛和麻木与低速型机器的每日使用时间（小时）显著相关。这些结果表明，高速和低速型机器的使用可能是牙科技师振动综合征的一个原因。2）牙科技师中肩部疼痛（30.8%）、颈部疼痛（30.1%）和背部疼痛（36.3%）的患病率较高。据认为，这些症状与工作姿势和机器使用有关。
