牙体解剖学教学中2种3倍大石膏牙雕刻方法的应用比较  

Comparison of two carving methods applied for triple-sized plaster tooth in dental anatomy teaching

作　　者：张梅[1] 周璟[1] 程飞[1] 石钟美[2] 

机构地区：[1]上海医药高等专科学校,上海交通大学医学院附属卫校口腔系,上海201318 [2]上海医药高等专科学校,上海交通大学医学院临床Ⅲ部,上海200092

出　　处：《上海口腔医学》2006年第5期551-554,共4页Shanghai Journal of Stomatology

摘　　要：目的:比较3倍大石膏牙雕刻的2种方法,探讨在教学中如何合理应用2种方法。方法:43名学生随机分为多面体法教学组(n=22)和1/2等分法教学组(n=21)。以右上中切牙3倍大石膏牙雕刻作为前牙雕刻的代表,以右上第一磨牙3倍大石膏牙雕刻作为后牙雕刻的代表,对2种雕刻方法的教学效果进行比较。应用SAS6.12统计软件包对数据进行处理,统计方法包括配对t检验和团体t检验。结果:统计学分析表明,初学时,对于右上中切牙的雕刻,2种方法取得的效果无显著差异(P>0.05);对于右上第一磨牙的雕刻,多面体法组的雕牙成绩比1/2等分法组高(P<0.05)。11个月后,上述2个牙的雕刻,2种方法所取得的成绩与初学时相比均有显著进步(P<0.01);但对于右上中切牙的雕刻,2组的进步无显著差别(P>0.05);而对于右上第一磨牙的雕刻,1/2等分法组学生进步大于多面体法组(P<0.01)。结论:针对不同牙位、不同学习阶段,应教授合适的雕刻方法,以提高学生的牙体雕刻水平。PURPOSE： To explore how to apply polyhedron method and bisection method reasonably in teaching by comparing the two carving methods for triple-sized plaster tooth. METHODS： 43 students were randomly divided into two groups as follows： polyhedron method group （n=22） and bisection method group （n=21）. A comparison was made between the two carving methods by taking right maxillary central incisor carving as a sample for the anterior tooth carving and taking right maxillary first molar carving as a sample for the posterior tooth carving. Paired t test and grouped t test were used for data analysis; the results were assessed by SAS6.12 software package. RESULTS： For the beginners, regarding to right maxillary central incisor carving, there was no significant difference between the two methods （P〉0.05）. But regarding to right maxillary first molar carving, the ＇carving performance of polyhedron method group was significant better than bisection method group （P〈0.05）. After 11 months, as for the two carvings mentioned above, students in the two groups both had made significant progresses compared with the beginners （P〈0.01）. While regarding to right maxillary central incisor carving, progresses of the two groups were not significant （P〉0.05）. But regarding to right maxillary first molar carving, the students in bisection method group had made greater progresses than students in polyhedron method group （P〈0.01）. CONCLUSION： It＇s concluded that, in order to obtain better teaching effects, carving methods should be chosen appropriately in teaching according to different teeth and different study stages.

关 键 词：3倍大石膏牙 多面体法 1/2等分法 牙体解剖学 医学教育 

分 类 号：R-4[医药卫生]