Influence of Self-Assessment on Dental Students' Performance on Technical Assessments in Periodontics.

Self-assessments were introduced into a third-year clinical periodontics course to enable dental students to self-assess and receive faculty feedback prior to technical assessment. The aims of this study were to determine if there was an improvement in the pass rate and average grade on the technical assessments following implementation of self-assessments and to analyze the accuracy of the student self-assessments by comparing them with faculty assessments. Scores from 106 third-year dental students for four periodontal procedures were included in the analysis. Faculty and student self-assessment scores, along with self-assessment and final technical assessments scores, were compared, as were the average number of self-assessment attempts for the various procedures and the pass rates. The average number of self-assessments per student was 6.5 compared to 4.2 for the technical assessments. There was no significant difference between students' self-assessment scores and faculty scores (average difference=0.005; p=0.7894). However, there was a significant increase in overall scores between students' self-assessments and technical assessments (average difference: 0.30 out of 5; p=0.0001). There was also a significant difference in pass rate between self-assessments and technical assessments (92.3% and 99.7%, respectively). The individual technical assessment with the greatest improvement was for scaling and root planing (average difference=0.47; p=0.0001), which also had significantly more self-assessments (2.3 vs. 1.2-1.7, p=0.0001). These results suggest that self-assessment and the subsequent faculty feedback provided students with information that enabled them to improve their performance on technical assessments.