IPN仿釉质牙在口腔修复牙体预备实践教学中的应用  

Application of interpenetrating polymer network enamel-like teeth in the dental practice teaching of crown preparations

作　　者：王忠山 惠小勇 李石保 Wang Zhongshan;Hui Xiaoyong;Li Shibao(State Key Laboratory of Oral&Maxillofacial Reconstruction and Regeneration,National Clinical Research Center for Oral Diseases,Shaanxi Key Laboratory of Stomatology,Department of Prosthodontics,School of Stomatology,The Fourth Military Medical University,Xi'an 710032,China;Rocket Army Guangzhou Special Service Rehabilitation Center,Guangzhou 515000,China;State Key Laboratory of Oral&Maxillofacial Reconstruction and Regeneration,National Clinical Research Center for Oral Diseases,Shaanxi Key Laboratory of Stomatology,Department of Materials,School of Stomatology,The Fourth Military Medical University,Xi'an 710032,China)

机构地区：[1]口颌系统重建与再生全国重点实验室,国家口腔疾病临床医学研究中心,陕西省口腔医学重点实验室,第四军医大学口腔医院修复科,西安710032 [2]火箭军广州特勤疗养中心,广州515000 [3]口颌系统重建与再生全国重点实验室,国家口腔疾病临床医学研究中心,陕西省口腔医学重点实验室,第四军医大学口腔医院口腔材料学教研室,西安710032

出　　处：《中华医学教育探索杂志》2023年第7期987-990,共4页Chinese Journal of Medical Education Research

基　　金：国家自然科学基金青年项目(81700930)。

摘　　要：目的探索一种可高仿真模拟天然牙操作手感的教学模型义齿,以更好应用于口腔修复牙体预备实践模拟教学。方法选取空军军医大学口腔医学专业四年级学生44名,每名学员依次在仿真头模上应用IPN(interpenetrating polymer network)仿釉质牙、天然牙及传统复合树脂牙完成全冠牙体预备操作训练,并分别进行操作考核,记录每次牙体预备操作时间。按照金属烤瓷全冠牙体预备的要求,分别就轴面聚合度、修复空间、点线角、肩台质量、体位姿势5个方面进行评分(每方面共10分,总分合计50分),并计算总分。考核结束后,每名学员填写对IPN仿釉质牙评价的调查问卷。采用SPSS 23.0进行LSD-t检验和塔姆黑尼T2检验。结果IPN仿釉质牙组考核总分为(37.15±1.17),天然牙组考核总分为(37.20±1.20),两组之间差异无统计学意义(P>0.05);两组考核总分均高于树脂牙组得分(31.53±1.41),差异有统计学意义(P<0.05);尤其是在轴面聚合度、修复空间、肩台质量方面,IPN仿釉质牙和天然牙组学生得分均高于传统复合树脂牙组(P<0.05)。学员问卷调查结果显示,各项评分均较高,为3.7~4.9分。结论IPN仿釉质牙相比于传统复合树脂牙,能够更加全面、有效地模拟对天然牙进行牙体预备时的操作手感和体验,在口腔修复牙体预备实践教学中具有潜在的优势。Objective To explore a type of teaching teeth that can highly simulate natural teeth,and to investigate its application in the practice teaching of crown preparations.Methods A total of 44 senior students majoring in stomatology Fourth Military Medical University were selected,and each student received the training of crown preparations using interpenetrating polymer network(IPN)enamel-like teaching teeth,extracted natural teeth,and traditional composite resin teeth.Operation assessment was performed,and the operation time of each crown preparation was recorded.According to the requirements for crown preparations,scores were determined from the five aspects of axial converging,space for repair,line angle,shoulder quality,and posture,with 10 points for each aspect and 50 points in total,and the total score was calculated.A questionnaire survey on IPN enamel-like teeth was performed for each student after assessment,and SPSS 23.0 was used to perform the least significant difference t-test and the Tambane's T2 test.Results There was no significant difference in total assessment score between the IPN enamel-like teeth group and the natural teeth group(37.15±1.17 vs.37.20±1.20,P>0.05),and both groups had a significantly higher total score than the resin teeth group(31.53±1.41)(P<0.05).The IPN enamel-like teeth group and the natural teeth group had significantly higher scores than the traditional composite resin teeth group in terms of axial converging,space for repair,and shoulder quality(P<0.05).The questionnaire survey of the students showed a relatively high score of 3.7-4.9 for each item.Conclusion Compared with traditional composite resin teeth,IPN enamel-like teeth can more comprehensively and effectively simulate the operation and experience of natural teeth for crown preparations and thus have potential advantages in the practice teaching of crown preparations.

关 键 词：医学模拟教学 仿釉质牙 教学义齿 牙体预备 

分 类 号：R78[医药卫生—口腔医学]