Application of CBL combined with 3D printing furcation involvement model in residency teaching

ZHOU Huan; LI Ye; CHEN Fanghui; PENG Qiao; ZHANG Xixuan; LIU Zifei; SI Weihang; ZHU Chunhui

doi:10.15956/j.cnki.chin.j.conserv.dent.2026.01.011

Abstract：Objective To evaluate the effectiveness of case-based learning(CBL)combined with 3D printing furcation models in the residency training for furcation involvement.Methods Seventy-five regulation students who were in the periodontal department of Xi'an Jiaotong University Stomatology Hospital from September 2022 to June 2024 were included in this study.They were randomly divided into two groups:35 students of the CBL teaching combined with 40 students of the CBL teaching(control group)and 3D printed model(experimental group).Both groups were instructed by the same senior doctor,and the teaching contents included the etiology,staging,diagnosis,treatment plan,and hands-on practice of furcation involvement.Participants in the experimental group applied the teaching method of CBL combined with 3D printed models,and participants in the control group applied the teaching method of CBL.The teaching effect of participants were assessed by the theory and practice examinations combined with a questionnaire.Comparisons between the two groups were analyzed by the t test.Results The theoretical score(91.60±4.20)and practical score(91.70±3.20)of the experimental group were better than the theoretical score(86.40±3.50)and practical score(82.50±4.50)of the control group,and the difference was statistically significant(P＜0.001).Participants in the experimental group had better assessment for the teaching process than those in the control group,and the difference was statistically significant(P＜0.05).Conclusion CBL combined with 3D printing furcation involvement model teaching method obtains a better effect in residency teaching of furcation involvement,which provides a reference for the residency teaching of furcation involvement and can be further popularized and applied.