Prabhu Srividya, John Vanchit, Blanchard Steven, Eckert George J, Hamada Yusuke
Srividya Prabhu, DMD, MSD, is in private practice in Mason, OH; Vanchit John, BDS, MDS, DDS, MSD, is Chair, Department of Periodontics and Allied Dental Programs, Indiana University School of Dentistry; Steven B. Blanchard, DDS, MS, is Director of Graduate Periodontics, Indiana University School of Dentistry; George J. Eckert, MAS, is Biostatistician Supervisor, Department of Biostatistics, Indiana University School of Medicine; and Yusuke Hamada, DDS, MSD, is Associate Program Director, Department of Periodontics and Allied Dental Programs, Indiana University School of Dentistry.
J Dent Educ. 2019 Apr;83(4):429-436. doi: 10.21815/JDE.019.052. Epub 2019 Feb 11.
Dental students often underestimate their probing depth (PD) measurements, which emphasizes the need for effective and novel methods for teaching proper probing technique. The aim of this study was to evaluate the efficacy of audiovisual learning aids, recorded from the point of view of examiners, for improvement in PD agreement in dental students. In 2017-18, 22 third-year dental students were randomized into test and control groups. Each student and a single blinded faculty examiner performed PD measurements on a minimum of three patients. The test group viewed a video demonstrating proper probing technique, while the control group received only probing technique instruction from prior lectures. All measurements, the periodontal diagnoses, and the total time taken to complete PD measurements were recorded. A survey of student attitudes about the audiovisual tool was conducted after the intervention; all 22 students completed the survey. A total of 11,426 PD sites were measured. The test group had 10% greater accuracy in PD sites=4 mm. The control group had a minor but statistically significant increase in accuracy for 2 mm PD sites. For all incorrect measurements at sites PD≥4, the students tended to underestimate the PD. Tooth type, site location around tooth, and diagnosis had no significant effect on PD measurement agreement. No significant difference between groups was found for the proportions of gingivitis and periodontitis patients or for examination time. This study found that use of the audiovisual learning aid "Calibrated Periodontal Training Video" improved the students' probing depth accuracy for sites with PD of 4 mm.
牙科学生常常低估他们的探诊深度（PD）测量值，这凸显了采用有效且新颖的方法来教授正确探诊技术的必要性。本研究的目的是评估从检查者角度录制的视听学习辅助工具对提高牙科学生PD测量一致性的效果。在2017 - 18年，22名三年级牙科学生被随机分为试验组和对照组。每名学生和一名单盲的教员检查者对至少三名患者进行PD测量。试验组观看了一段展示正确探诊技术的视频，而对照组仅接受之前讲座中的探诊技术指导。记录了所有测量值、牙周诊断结果以及完成PD测量所需的总时间。干预后对学生关于视听工具的态度进行了调查；所有22名学生都完成了调查。总共测量了11426个PD位点。试验组在PD位点为4毫米时的准确性高出10%。对照组在PD为2毫米的位点上准确性有轻微但在统计学上显著的提高。对于所有PD≥4位点的错误测量，学生们往往低估了PD。牙齿类型、牙齿周围的位点位置以及诊断对PD测量一致性没有显著影响。在牙龈炎和牙周炎患者的比例或检查时间方面，两组之间未发现显著差异。本研究发现，使用视听学习辅助工具“校准牙周训练视频”提高了学生对PD为4毫米位点的探诊深度准确性。
