窝洞预备技能评价系统用于牙体预备质量评估的探讨

摘要

Objective To analyze the effects of Cavity Preparation Skill Evaluation System (CPSES) in pre-clinical dental cavity preparation assessment.Methods Twenty one dental undergraduates in Medical School of Nankai University were chosen in this study.After cavity preparation training,students' cavity preparation skills were evaluated systematically.The outline form and depth of 21 left mandibular first molar class Ⅰ cavity preparation made by students were evaluated by CPSES system and evaluators' visual assessment.The evaluation results were analyzed using GraphPad InStat statistical software(V3.1) with paired t test (test level α=0.05) and correlation analysis to study the application effects of the CPSES system.Results The evaluation results generated from CPSES system and evaluators' visual assessment for class Ⅰ dental cavity preparation skill evaluation showed significant difference(two tailed P value 0.0050,t=3.156) and certain correlation on cavity preparation assessment(two tailed P value 0.0837,r=0.386 2).Conclusion Application of cavity preparation skill evaluation system in undergraduate endodontic teaching can deepen and strengthen the students' understanding of cavity preparation requirements and help students master cavity preparation knowledge and skills better.%目的 分析窝洞预备技能评价系统(cavity preparation skill evaluation system,CPSES)应用于牙体窝洞预备质量评估的教学效果.方法 选择南开大学医学院口腔临床医学专业本科四年级学生21人为研究对象,经窝洞预备培训后,集中考核窝洞预备技能掌握情况.根据恒磨牙Ⅰ类洞窝洞预备要求,由21名本科学生对左下第一恒磨牙标准模型牙进行Ⅰ类洞窝洞预备.之后依据窝洞外形轮廓、洞深等预备标准,分别采用CPSES和教师目测评估两种方法,对学生预备的21颗标准模型牙Ⅰ类洞窝洞进行评分.两种方法获取的评估结果采用GraphPad InStat统计软件(V3.1)经配对t检验(检验水准α=0.05)及相关性分析,以评价该系统应用效果.结果 采用CPSES和教师评估两种评估方法对标准模型牙Ⅰ类洞窝洞预备质量进行评估,结果经统计学分析差异有统计学意义(双尾P值0.005 0,t=3.156),两种方法在评估窝洞预备质量方面有一定的相关性(双尾P值0.083 7,r=0.386 2).结论 CPSES软件用于牙体牙髓病实验教学辅助教师评估,可加深并强化学生对窝洞预备要求的理解,对学生窝洞预备知识掌握及技能训练很有帮助.