摘要
目的:探讨基牙数目对下颌单侧游离端MK-1附着体式义齿基牙位移的影响。方法:选用单基牙、双基牙和三基牙支持的MK-1附着体制作下颌单侧游离端MK-1附着体式义齿,在义齿侧上下牙列间放置食物片,咬合时用LB-72型高精度半导体激光位移测量仪,测量并计算出基牙在不同方向的位移量,并用随机方差分析法进行统计学分析。结果:单基牙组的近远中向、颊舌向、垂直向的位移、倾斜、扭转均大于双基牙组,差别有统计学意义(P<0.05)。双基牙组的近远中向的位移大于三基牙组,差别有统计学意义(P<0.05),其余差别没有统计学意义(P>0.05)。结论:单侧游离端MK-1附着体式义齿不宜设计单基牙,宜设计双基牙,如双基牙条件不理想时,可增加第三基牙。
Objective：This study compared the influence of the number of abutment to displacement of abutment Method：One abutment,two abutments and three abutments were used to distal-extension removable partial dentures（RPDs）designed by MK-1 attachment.Then food chip was masticated between the upper and lower dentitions on the attachments side.Placement of abutment was measured by LB-72 high-sensitive-1aser-traneferring-detector and the data were statistically analyzed for random block analysis of variance.Result：The displacement,inclination,and torsion of the abutment movements in the mesial-distal,bucco-lingual and occluso-gingival directions all had statisticalsignificance B（P 0.05） between S and D.The displacement,inclination,and torsion of the abutment movements in the mesial-distal,bucco-lingual and occluso-gingival directions all had no statisticalsignificance B（P 0.05） between T and D besides displacement of mesial-distal.Conclusion：Two abutment can be used to distal-extension RPDs designed by MK-1 attachment,but one abutment can not.If the abutments are not good,we can use three abutments.
出处
《临床口腔医学杂志》
2010年第12期727-729,共3页
Journal of Clinical Stomatology
基金
上海市卫生局科研基金资助(024091)
关键词
游离端
附着体
基牙
位移
distal-extension
attachment
abutment
displacement
