Adjunctive Effect of a Serious Game Application Improves Learning of Periodontal Classification in Undergraduate Dental Education-A Randomised Educational Trial.

INTRODUCTION: The 2018 periodontal classification system improved diagnostic precision and prognostic assessment of periodontitis but has been perceived as complex, posing challenges for dental students and educators. Serious games have emerged as a potential adjunctive educational strategy to enhance learning, engagement and motivation. This study evaluated the effectiveness and user satisfaction of a serious game designed to support dental undergraduates in learning the 2018 periodontal classification system. MATERIALS AND METHODS: A randomised educational trial was conducted among dental students (n = 46) at Malmö University. Participants were randomised into a control group receiving standardised digital lectures and written material, or a test group receiving the same materials as well as access to a serious game application. Knowledge was assessed at baseline and after 2 weeks using single best answer questions (SCQ) and multiple-true-false (MTF) questions. Participant satisfaction was evaluated using numeric rating scales. Between- and within-group comparisons were performed using independent-samples t-tests/Welch's tests or paired-samples t-tests, respectively. RESULTS: Thirty-eight students completed the study (test group n = 18; control group n = 20). Both groups showed significant improvement in MTF scores over time (p < 0.05). At post-intervention, the test group demonstrated significantly higher MTF scores (p < 0.05), but equal SCQ scores compared with the control group (p > 0.05). Overall satisfaction with the learning experience was high in both groups and no differences were observed (p > 0.05). CONCLUSION: The serious game enhanced students' understanding of the periodontal classification system when used as an adjunct to traditional teaching, without compromising learner satisfaction. Serious games represent a promising complementary tool in periodontal education.