Assessment of undergraduate students in tooth extraction competence- A cohort study.

AIM: The aim of the study was to determine the value of the number of patient encounters and tooth extractions on the competence of final-year Bachelor of Dental Surgery (BDS) students. METHODS: Following ethics approval, the study employed purposive sampling to enrol final-year BDS students and assess their competence longitudinally over a full academic year. Students were assessed periodically on four separate occasions after they had gained experience in performing 15, 40, 70 and 100 patient encounters involving tooth extractions. RESULTS: There were 177 students with complete profiles completing the tooth extraction assessments including 31 males (18%) and 146 females (82%). The age range of participants was 22 to 24 years (mean = 21.92; median = 22). The total number of assessment data points available for the four assessments was 1062. A chi-squared test was carried out to test the hypothesis that competence in tooth extraction increases with increasing exposure to patients. Students in Group 100 were most likely to pass the competency, whilst students in Group 15 were most likely to fail. There was a statistically significant variation in the proportion of "Below Standard," "Meets Standard" and "Exceeds Standard" judgements awarded to students with differing levels of prior experience (p < .001). Therefore, the hypothesis was accepted. Analysis of assessment results for differential performance of students by gender did not show significant differences. CONCLUSIONS: The results of this study show a positive relationship between the number of tooth extractions performed and competence of final-year dental students. Over 90% students achieved competence after performing 100 patient encounters. Although competence in tooth extractions showed a linear relationship with experience of the participants in this study, the data were collected from a single cohort of students at one institution. Further multi-institution studies involving several cohorts are required to further explore the value of increased experience.

Case-based learning in undergraduate orthodontic education: A cross sectional study.

Introduction: Student centric learning approaches have been reported to be effective in introducing higher order cognitive skills required by the health professionals. However, learners' perceptions must be constructively aligned with new learning interventions to achieve a positive impact on their learning. The aim of this study was to explore the learning experiences of undergraduate dental students with case-based learning in orthodontics. Methods: A case-based learning model was introduced on orthodontic diagnosis and treatment planning for final year students on a Bachelor of Dentistry programme toward the end of their academic year. A survey was conducted to explore the perceptions and experiences of the participants. The research instrument was based on a previously validated questionnaire and included information on demographics and consisted of 12 items aimed at evaluating the benefits and challenges of cased based learning. Results: All 67 students in the final-year cohort participated in study, yielding a response rate of 100 percent. Participants across the board perceived CBL to be an effective strategy to learn the subject content and helpful in improving the students' skills in orthodontic diagnosis, treatment planning and team-working. CBL did not pose any significant challenges or barriers to student learning. Conclusion: Participants reported high acceptance of CBL in orthodontic teaching and learning and a positive impact on their educational experiences. CBL was perceived to be an appropriate strategy to enhance the diagnostic, treatment planning and team-working skills of dental students.