Department of Orthodontics and Orofacial Orthopedics, University Hospital of Dentistry, Oral Medicine, and Maxillofacial Surgery, Eberhard Karls University Tübingen, Osianderstr. 2-8, 72076, Tübingen, Germany.
Department of Psychosomatic Medicine and Psychotherapy, University Hospital Tübingen, Tübingen, Germany.
BMC Med Educ. 2019 Mar 12;19(1):81. doi: 10.1186/s12909-019-1512-3.
Despite the increasing use of digital impressions in orthodontics, this technique does not usually form part of the learning objectives in dental training. The aim of this study was to determine how students assess the user-friendliness of intraoral scanners compared to a conventional impression technique after a theoretical and practical teaching module.
Thirty-one dental students in their seventh semester (4th year) received and conducted digital (3 M, St. Paul, NM) and conventional (alginate) impressions from: (i) the dentist's perspective, and (ii) the patient's perspective. Each student completed four questionnaires to evaluate: (i) the user-friendliness of intraoral scanning, and (ii) intraoral scanning compared to the conventional method.
Thirty (97%) students had not previously performed digital impressions. Twenty-four (77%) students were overall "very" or "rather" satisfied with the handling of the intraoral scanning method, and 18 (58%) preferred digital to alginate impressions from the dentist's perspective. From the "patient's" perspective, the students did not report any significant differences between the two methods. However, the impression tray in conventional impressions reduced "patient" comfort significantly more than the camera in digital impressions (Z = - 3.496, p < 0.001).
Dental students were able to practice both conventional alginate and modern digital impressions without prior knowledge of intraoral impression techniques after basic training and an introduction from dentists. Students reported a preference for the digital technique. Implementing digital intraoral impressions into undergraduate training is recommended to familiarise students with this rapidly developing digital technique at an early stage.
尽管正畸学中越来越多地使用数字印模，但该技术通常不属于牙科培训的学习目标。本研究旨在确定学生在接受理论和实践教学模块后，如何评估与传统印模技术相比，口内扫描仪的易用性。
第七学期（四年级）的 31 名牙科学生接受并进行了数字（3M，明尼苏达州圣保罗）和传统（藻酸盐）印模：（i）从牙医的角度，和（ii）从患者的角度。每位学生完成了四份问卷，以评估：（i）口内扫描的易用性，以及（ii）口内扫描与传统方法的比较。
30 名（97%）学生以前没有进行过数字印模。24 名（77%）学生总体上对口内扫描方法的操作非常满意或相当满意，18 名（58%）学生从牙医的角度更喜欢数字印模而不是藻酸盐印模。从“患者”的角度来看，两种方法之间没有报告任何显著差异。然而，与数字印模相比，传统印模中的印模托盘会显著降低“患者”的舒适度（Z= -3.496，p < 0.001）。
在基本培训和牙医介绍后，牙科学生无需事先了解口内印模技术即可练习传统的藻酸盐和现代数字印模。学生报告更喜欢数字技术。建议将数字化口内印模纳入本科培训，以使学生在早期阶段熟悉这一快速发展的数字化技术。
