【摘要】 目的:比较功能性印模技术与解剖式印模技术制取的下颌总义齿在主承托区与内、外斜嵴区基托组织面的形态差异。方法:15名无牙颌志愿者,分别使用功能印模和解剖印模2种技术为同一志愿者制作2副实验用下颌总义齿,应用3D激光扫描仪对义齿进行三维建模,进而对2种印模方法制取的下颌总义齿在主承托区与内、外斜嵴区基托组织面的形态差异进行测量,采用SPSS 12.0软件包对数据进行配对t检验。结果:2种印模方法的下颌总义齿基托组织面在双侧内、外斜嵴处有显著差异(P<0.01),而在义齿主承托区组织面差异无统计学意义(P>0.05)。结论:功能性印模方法制作的下颌总义齿在使用时更少发生压痛,测得的形态差异数据提示在功能印模时,对内、外斜嵴区域应预留足够的缓冲间隙。更多还原

【Abstract】 PURPOSE: To compare the difference in oblique external ridge,oblique internal ridge and alveolar process crest of lower complete denture base made through functional impression and anatomic impression techniques.METHODS: Fifteen patients were chosen to treat with two kinds of complete dentures through functional impression and anatomic impression technique respectively.3D laser scanner was used to scan the three-dimensional model of the denture base and the differences of the surface structural between two techniques in alveolar process crest,external and internal oblique ridges were analyzed,using paired t test with SPSS 12.0 software package.RESULTS: Between the two techniques,there were significant differences in the areas of internal and external oblique ridge(P<0.01);there was no significant difference in the main support areas(P>0.05).CONCLUSIONS: The results explain why there is less tenderness when functional impression technique is applied.The differences measured also indicate that sufficient buffering should be made in external and internal oblique ridge areas in clinic.更多还原