ABSTRACT

Background

This work presents a novel Ergonomic Trainer System that provides personalized pre-operative and intra-operative ergonomic feedback to improve dental work posture.

Methods

The system consists of two ultrasonic sensors to measure the height of operator’s seat and dental unit; two accelerometers to measure the angles of the operator’s neck and upper arm; and software to analyze data from each operator and provide a personalized pre-operative and intra-operative ergonomic feedback. Sixteen dental students were randomly assigned into a crossover trial, scheduled for each of two sequences of working: receiving feedback or no-feedback from the system while performing tooth preparation. The parameters measured were the extensions of the neck and upper arm, before (pretest) and after (posttest) receiving feedback or no-feedback from the system.

Results

The posttest angles of neck and upper arm had decreased significantly compared with pretest angles in the group that received preoperative and intra-operative ergonomic feedback from the system (p < .05).

Conclusion

Performing the dental treatment with pre-operative and intra-operative feedback had effects on improving the posture of the dental students by decreasing the angles of neck and upper arm.

中文翻译：

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个性化的术前和术中人机工程学反馈，以改善牙科工作姿势

抽象的

背景

这项工作提出了一种新颖的人体工学教练系统，可提供个性化的术前和术中人机工程学反馈，以改善牙科工作姿势。

方法

该系统由两个超声波传感器组成，用于测量操作员座椅和牙科设备的高度；两个加速度计，用于测量操作者的脖子和上臂的角度；以及用于分析来自每个操作员的数据并提供个性化的术前和术中人体工程学反馈的软件。16名牙科学生被随机分配到一项交叉试验中，按计划进行以下两个工作序列中的每个工作序列：在进行牙齿准备时从系统接收反馈或无反馈。测得的参数是从系统接收反馈或无反馈之前（预测试）和之后（后测试）的脖子和上臂的伸展。

结果

与从系统接受术前和术中人机工程学反馈的组中的前测角相比，颈部和上臂的后测角明显降低（p <  .05）。

结论

通过术前和术中反馈进行牙科治疗，可通过减少颈部和上臂的角度来改善牙科学生的姿势。