Carpentier Maxime, Aubeux Davy, Armengol Valérie, Pérez Fabienne, Prud'homme Tony, Gaudin Alexis
Maxime Carpentier is an undergraduate student, University of Nantes, Nantes, France; Davy Aubeux, DDS, MS, is Assistant Professor, Department of Endodontics and Restorative Dentistry, University of Nantes, Nantes, France; Valérie Armengol, DDS, PhD, is Associate Professor, Department of Endodontics and Restorative Dentistry, University of Nantes, Nantes, France; Fabienne Pérez, DDS, PhD, is Professor and Chair, Department of Endodontics and Restorative Dentistry, University of Nantes, Nantes, France; Tony Prud'homme, DDS, MS, is Associate Practionner, Department of Pedodontics, University of Nantes, Nantes, France; and Alexis Gaudin, DDS, PhD, is Associate Professor, Department of Endodontics and Restorative Dentistry, University of Nantes, Nantes, France.
J Dent Educ. 2019 Apr;83(4):407-415. doi: 10.21815/JDE.019.044. Epub 2019 Feb 11.
Scientific evidence validating the beneficial effect of loupes in preventing musculoskeletal disorders is very scarce. The aim of this study was to assess the impact of dental loupes on dental students' posture during a preclinical restorative dentistry course. Using a randomized crossover design, this study was conducted at the School of Dentistry, University of Nantes, France, in 2017. Forty students in their second year of dental study were randomly divided into two groups of 20 each: group A used loupes, whereas group B did not. The week after, students reversed configurations (each subject served as his or her own treatment and control group). Students were video-recorded during cavity preparation. Trunk, head and neck, and upper arm positions were analyzed using continuous scores based on the modified Posture Assessment Instrument. Additionally, cavities were rated, and students completed a questionnaire on their perceptions of the loupes. On a scale on which lower scores indicated better posture, the results showed significantly higher posture ergonomic scores per minute for students without loupes (146.3±6.64 points/min) than with loupes (123.2±6.77 points/min; p<0.05). The majority of the students (32/39, 82%) showed improvements in ergonomic postures with the use of loupes. Trunk, head, and neck were positively impacted by the use of loupes, but not the upper arms. Cavity preparations were not improved by the use of loupes. The questionnaire revealed negative aspects (pain and difficulty adapting) but underlined the perceived positive impact on posture. This study documented the ergonomic advantages and challenges of introducing magnification near the beginning of the dental training program.
证实头戴放大镜在预防肌肉骨骼疾病方面有益效果的科学证据非常稀少。本研究的目的是评估在临床前牙体修复学课程中，牙科头戴放大镜对牙科学生姿势的影响。本研究采用随机交叉设计，于2017年在法国南特大学牙科学院进行。40名牙科专业二年级学生被随机分为两组，每组20人：A组使用头戴放大镜，而B组不使用。一周后，学生们交换配置（每个受试者既是自己的治疗组，也是对照组）。在窝洞预备过程中对学生进行录像。使用基于改良姿势评估工具的连续评分分析躯干、头部和颈部以及上臂的位置。此外，对窝洞进行评级，学生们完成一份关于他们对头戴放大镜看法的问卷。在一个分数越低表明姿势越好的量表上，结果显示，不使用头戴放大镜的学生每分钟的姿势人体工程学得分（146.3±6.64分/分钟）显著高于使用头戴放大镜的学生（123.2±6.77分/分钟；p<0.05）。大多数学生（32/39，82%）在使用头戴放大镜后人体工程学姿势有所改善。使用头戴放大镜对躯干、头部和颈部有积极影响，但对上臂没有影响。使用头戴放大镜并没有改善窝洞预备情况。问卷揭示了一些负面问题（疼痛和难以适应），但也强调了对姿势的积极影响。本研究记录了在牙科培训项目开始时引入放大设备在人体工程学方面的优势和挑战。
