Donaldson M E, Knight G W, Guenzel P J
Department of Pediatric Dentistry, School of Dentistry, University of Detroit Mercy, MI 48219-0900, USA.
J Dent Educ. 1998 Nov;62(11):905-10.
Previous research has shown that accurate student self-evaluation is related to higher quality dental products. Variance in student performance still remains. Enhancement of visual perception could contribute to product improvement. Only one study has evaluated the effects of magnification on simulated dental patient care. The present study sought to determine if magnification had a positive effect on student-generated products in pediatric amalgam preparations. Fifty-two third-year students were randomly assigned to experimental (magnification) or control (no magnification) groups. Members of the experimental group used magnification in their daily work in the pediatric dentistry clinic. No significant differences between the groups' preparations or evaluations of standard preparations were found. Further study should address these issues: 1) possible effects of specific training in the use of magnification devices; 2) whether the tolerance for error in dental preparations is so great that finer vision contributes little to product improvement; 3) the role of tactile sensation in evaluation and preparation; and 4) the possible benefits of magnification for effect of age. Based on this study, it seems that requiring students to purchase magnification devices may not be justified.
先前的研究表明，学生准确的自我评估与更高质量的牙科产品相关。学生表现的差异仍然存在。视觉感知的增强可能有助于产品改进。只有一项研究评估了放大对模拟牙科患者护理的影响。本研究旨在确定放大对儿科汞合金修复术中学生制作的产品是否有积极影响。52名三年级学生被随机分配到实验组（使用放大设备）或对照组（不使用放大设备）。实验组的成员在儿科牙科诊所的日常工作中使用放大设备。两组在标准修复术的制作或评估方面未发现显著差异。进一步的研究应解决以下问题：1）使用放大设备的特定培训可能产生的影响；2）牙科修复术中对误差的容忍度是否如此之大，以至于更敏锐的视觉对产品改进贡献不大；3）触觉在评估和修复术中的作用；4）放大对年龄影响的可能益处。基于这项研究，要求学生购买放大设备似乎没有道理。
