Multimodal teaching methods for students in dentistry: a replacement for traditional teaching or a valuable addition? A three-year prospective cohort study

BACKGROUND: This student-centred prospective cohort study evaluated the impact of multimodal teaching methods on student performance in the theoretical domain of dental studies. METHODS: Dental students answered anonymous questionnaires indicating their preferences and opinions three times over three consecutive academic years. Data collected included gender, course, year of study and most frequent and preferred learning modality. Survey responses from Google Forms were analysed with SPSS 20.0 software (IBM Company, Chicago, IL, USA). Scale responses were tested with the Mann-Whitney U test against gender, program and year of study. Grades obtained from structured examinations held in the third academic year were analysed using the Wilcoxon Signed Rank Test according to the teaching method employed. The level of statistical significance was set at p < 0.05. RESULTS: The response rate was high (> 80%) throughout the study. Acceptance of online modalities increased over time (Kruskal-Wallis test, p < 0.001) and 75% of students requested that online teaching modalities be maintained. Significant differences in gender, program of study, year of study and discipline taught were observed (Mann-Whitney test, p < 0.05). Females differed from males by favouring online modalities and face-to-face lectures, respectively, and clinical year students opted to retain pre-recorded online lectures. Recorded lectures resulted better for teaching core knowledge (Wilcoxon Signed Rank Test, p = 0.034), while face-to-face lectures were better for teaching applied knowledge (Wilcoxon Signed Rank Test, p = 0.043). Student responses to open-ended questions identified the need for a blended approach with in-person lecturing as an opportunity to socialise and avoid mental health issues. Although preferences varied, students showed a willingness to influence their learning and changes in curriculum, a predilection for self-directed learning and the need for freedom in engaging with resources and content. CONCLUSIONS: In the context of this study, online teaching modalities resulted in comparable examination performance and improved student satisfaction. This highlights the need for a blended approach to teaching.