【摘要】 目的评价分析虚拟实验室Simodont系统应用于口腔医学临床窝洞预备教学的效果。方法选择中国医科大学口腔医学院口腔临床医学专业本科生30人为研究对象,经统一理论培训后,简单随机抽样法分为3组,每组10人,男女均等,其中C组为对照组,F组为仿头模组使用传统塑料牙在仿头模上进行练习,M组为穆格（Moog）组在Simodont系统进行练习。并且于训练之前、期间和之后分别进行测试,检验窝洞预备技能掌握情况。根据恒磨牙Ⅱ类洞窝洞预备要求,由教师目测评估结合数字化评估系统进行评分。两种方法获取的评估结果分析采用Kruskal Wallis检验以及多重比较,检验水准α=0.05。结果实验组学生经过不同程度的练习之后技能都得到了提高,M组练习的学生进步更加明显,TEST3成绩分别为C组3.8±2.2、F组5.2±1.9、M组7.4±1.4,差异有统计学意义(t_CF=2.79,P_CF=0.021;t_CM=4.65,P_CM=0.001;t_FM=3.01,P_FM=0.013)。数字化评估结果与教师目测评分结果一致,F组与M组的成绩经过2个阶段练习后均得到了提高（χ²_F=39.56,PF<0.001;χ²_M=41.73,P_M<0.001）,M组成绩显著优于对照组及仿头模组(χ²_CM=31.16,P_CM=0.001;χ²_FM=24.89,P_FM=0.006)。结论 Simodont系统有利于口腔医学生手法技能的提高,加强窝洞预备实验课的教学效果,值得在临床前教学中加以推广应用。更多还原

【Abstract】 Objective To analyze and evaluate the effect of Virtual Laboratory Simodont applied in the preclinic teaching of dental cavity preparation. Methods Thirty dental undergraduates from China Medical University were selected and randomly divided into three groups after being unified with theory training,10 students for each group with gender parity. Group C was a control,whereas group F and M were trained in the traditional phantom lab（with conventional plastic prefab tooth）and in the Simodont lab,respectively. Tests for the preparation skill were performed before,during and after training. Scores were recorded upon both the visual assessment of teachers and a digital evaluation system according to the preparation requirements of permanent molars Class Ⅱ cavity. Evaluation results were analyzed with Kruskal Wallis test and multiple comparisons,with significance level α = 0.05. Results The preparation skill of the experimental groups was improved through the training,especially for the students trained in the Simodont lab(TEST3_C= 3.8 ± 2.2,TEST3_F= 5.2 ± 1.9,TEST3_M= 7.4 ± 1.4;t_CF= 2.79,P_CF= 0.021;t_CM=4.65,P_CM= 0.001;t_FM= 3.01,P_FM= 0.013). The result of digital evaluation was consistent with that of visual assessment by teachers. Both group F and M were improved after two stages of practice（χ²_F= 39.56,P_F<0.001;χ²_M= 41.73,P_M<0.001）. The result of group M was significantly better than that of group C and F(χ²_CM= 31.16,P_CM= 0.001;χ²_FM= 24.89,P_FM= 0.006). Conclusions Simodont can help dental students improve their practice skills,and strengthen the teaching effect of cavity preparation,so that it is of high recommendation in the dental preclinical teaching.更多还原