3种不同金属铸接式衔铁磁力差异的比较  

Comparison of the difference of the magnetic force by cast post-keepers combined with three different metals

作　　者：赵军[1] 魏斌[1] 李莹[1] 

机构地区：[1]上海交通大学医学院附属第九人民医院·口腔医学院口腔修复科上海市口腔医学重点实验室,上海市口腔医学研究所,上海200011

出　　处：《上海口腔医学》2006年第4期431-433,共3页Shanghai Journal of Stomatology

基　　金：上海市重点学科(特色学科)建设项目(T0203)

摘　　要：目的:分别对金合金、镍铬合金及纯钛3种金属铸接式衔铁,进行磁力测试,比较3种金属衔铁磁力的差异。方法:采用金合金、镍铬合金、纯钛3种金属为材料,分为3组,每组4件样本,与Magdisc500成品衔铁包埋铸造,制作根面结构。通过拉伸实验测试附着体磁引力大小并进行方差分析。结果:金合金组磁引力均值为4.84N,镍铬合金组均值为4.61N,纯钛组均值为4.12N。方差分析显示:3组两两间均存在显著差异(P<0.01)。结论:采用3种金属,通过铸接法制作的衔铁,其磁力均有一定程度下降,金合金组磁力下降最小。PURPOSE： Three different metals were used to make cast post-keepers of magnetic attachment. The magnetic force was tested and analyzed. METHODS： The cast-post keepers were combined by gold alloy, Ni-Cr alloy and Ti metal respectively. 12 samples were divided into three groups, 4 in each. Root surface structures were manufactured by these samples. The values of the magnetic force of the magnetic attachment were tested and compared using ANOVA. RESULTS： The average value of the attractive force of the keeper combined by gold alloy was 4.84N , while that of the keeper combined by Ni-Cr alloy was 4.61N and the keeper combined by Ti was 4.12N. Significant difference was found between each two samples, P〈0.01. CONCLUSION： The magnetic force of the keepers combined by three different metals decreased to certain degrees, the keeper combined by gold alloy decreased the least. Supported by Shanghai Leading Academic Discipline Project （Grant No.T0203）.

关 键 词：铸接式衔铁 合金 磁力 附着体 

分 类 号：R783.1[医药卫生—口腔医学]