Outcome of High-Fidelity 3D Jaw Model Simulations in Enhancing Endodontic Microsurgical Training.

[BACKGROUND] Endodontic microsurgery (EMS), indicated to manage teeth unresponsive to conventional root canal treatment, requires advanced technical expertise and clinical judgement. Traditional pre-clinical training methods lack fidelity and fail to replicate diseased states, leading to a steep learning curve clinically. High-fidelity 3D jaw model simulations offer a realistic and repeatable training solution, bridging the gap between theory and clinical practice.

[AIM] To evaluate the effectiveness of high-fidelity 3D jaw model simulations in enhancing residents' confidence and preparedness for endodontic microsurgery.

[METHODOLOGY] A descriptive cross-sectional study was conducted involving second-year Endodontic residents enrolled in a postgraduate programme at the National University of Singapore. The intervention group (n = 11; 2021-2023 cohorts) participated in a structured four-session simulation training using high-fidelity 3D jaw models replicating anatomical details and periapical pathology. The curriculum incorporated diverse clinical scenarios, deliberate practice, and structured feedback. The control group (n = 4; 2020 cohort) attended a single-session workshop using pig mandibles. Pre- and post-workshop questionnaires were administered to assess self-reported confidence and preparedness using questions adapted from the Simulation Design Scale (SDS) and the Student Satisfaction and Self-Confidence in Learning (SSSCL) scale. Residents also completed a post-surgical evaluation after their first EMS procedure.

[RESULTS] Residents trained with 3D models demonstrated greater improvements across all domains. Confidence in treatment planning improved from 2.45 ± 0.93 to 3.68 ± 0.69, compared to 3.75 ± 0.50 to 4.00 ± 0.00 in controls. Preparedness for EMS increased from 1.54 ± 0.82 to 3.20 ± 0.91 in the 3D group, and from 2.00 ± 0.82 to 2.75 ± 0.96 in the control group. Confidence in independently performing EMS rose from 1.27 ± 0.47 to 3.03 ± 0.95 in the 3D group, compared to 2.25 ± 0.82 to 3.00 ± 0.82 in the control group. The 3D group reported higher ratings for simulation realism, reduced stress, and greater perceived preparedness for clinical EMS.

[CONCLUSION] High-fidelity 3D jaw model simulations were effective in improving residents' confidence and preparedness for EMS. These findings support the integration of 3D simulation into Endodontic training to enhance clinical readiness and surgical competence.