Applications of double-sized 3D simulated extracted tooth teeth models in the theoretical courses of dental anatomy

ZHANG Fu-ping; FAN Zhao-na; HE Hong-wen

doi:10.19749/j.cn.cjgd.1672-2973.2025.05.011

Abstract：Objective To investigates the application of three-dimensional models in enhancing the theoretical instruction of dental anatomy.It evaluates student performance before and after the implementation of model-based teaching,compares the effectiveness of instruction with and without the use of three-dimensional models,and administers a satisfaction survey to assess student perceptions.Methods The participants of this study were 121 third-year undergraduate students majoring in stomatology at the Guanghua School of Stomatology,Class of 2020.They received instruction on the morphology of premolars and molars.The instructional session focusing on premolars was designated as the premolar group,while the session focusing on molars was designated as the molar group.The Grinding Teeth group completed a pre-class test and was provided with three-dimensional models of double-sized simulated extracted teeth.These models were utilized during the theoretical teaching sessions to enhance understanding.In contrast,the Premolar group did not use the enlarged tooth models during theoretical instruction.Instead,they incorporated in-class simulation exercises and assessed their accuracy through practice tests.Following the lecture,both groups participated in a post-class assessment focusing on tooth shape recognition,as well as a survey evaluating the perceived necessity and satisfaction regarding the use of three-dimensional models of double-sized simulated extracted teeth.Results The post class grades of the molars group were higher than the pre class grades[(97.11±12.16)points vs(81.82±31.46)points,P＜0.05].The post class scores of the molar group were higher than those of the premolar group[(97.11±12.16)points vs(92.98±16.21)points,P＜0.05].Among 121 students,120(99.17%)acknowledged the need for model-assisted teaching and agreed that models enhanced mastery of theoretical knowledge.Conclusion Double-sized 3D simulated extracted tooth models significantly enhance students'ability to recognize tooth morphology in dental anatomy education.