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Innovative Techniques to Assess Performance of Cavity Preparation Skills

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Original languageEnglish
JournalJournal of Dental Research
Publication statusPublished - Mar 2017

King's Authors

Abstract

Innovative Techniques to Assess the Performance of Cavity Preparation Skills Objectives: To assess different techniques used to measure the clinical cavity preparation skills of undergraduate dental students. Methods: 138 Year-1 Dental Undergraduate students were taught removal of caries using: plastic teeth in the traditional Phantom-Head Laboratory (n=96) or virtual teeth using the hapTEL work-stations (n=42). Assessment-techniques (1–3): The students’ fine motor-skills (precise hand-eye-finger movements) were measured before and after the learning activities using the Morrisby Manual Dexterity Test. The percentage of caries removed, healthy tissue remaining, pulp exposure and the time taken to complete the task were recorded for each student (n=42) using the hapTEL system. Micro-CT Scanning of the excavated plastic teeth (n=138) showed the percentage of caries removed, healthy tissue remaining, pulp exposure and roughness of surfaces. The data collected were compared to find out: (a) which technique provided the most accurate and detailed results; (b) if the results correlated with each other: and (c) whether there was improved student performance from the learning activities. Results: Technique-1, showed a significant correlation (Spearman’s Rho = 0.504, p<0.01) between the pre- and post-test results; mean value score gain of 2.8% (16.10 – 16.55). For Technique-2, the time for caries removal correlated significantly with (i) caries removal percentage (Spearman’s Rho = 0.241, p<0.01) and negatively with pulp exposure (ii) (Spearman’s Rho = -0.721, p<0.001). Technique-3- volumetric analysis of the Micro-CT scans showed additionally, the roughness of the preparations varied amongst students for the same volumetric results. Conclusions: Each of the 3 assessment techniques can measure specific skills relevant to caries removal but only the hapTEL log files (T2) can record the performance in relation to the time taken and only T3 provides a permanent accurate record of each students’ performance which includes roughness of preparation Division: IADR/AADR/CADR General Session Meeting: 2017 IADR/AADR/CADR General Session (San Francisco, California) Location: San Francisco, California Year: 2017 Final Presentation ID: 1717 Authors Cox Margaret ( King's College London , London London , United Kingdom ; King's College London , London London , London , United Kingdom ) Quinn Barry ( King's College London Dental Institute , London London , United Kingdom ) Shahriari-rad Arash ( King's College London , London London , Middlesex , United Kingdom ) San Diego Jonathan ( King's College London , London London , United Kingdom ) Woolford Mark ( King's College London Dental Institute , London London , United Kingdom ) Support Funding Agency/Grant Number: UK Economic and Social Research Council and Engineering and Physical Sciences Research Council - RES-139-25-0387 Financial Interest Disclosure: None SESSION INFORMATION Oral Session Evaluation and Assessment in Dental Education Friday, 03/24/2017 , 08:00AM - 09:30AM

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