特制钛镍合金针充填弯曲狭窄根管的实验室研究  

LABORATORY STUDY ON THE SPECIALLY MADE TI NI POINT USED AS ROOT FILLING MATERIAL IN THE CURVED AND NARROW ROOD CANALS.

作　　者：朱菲[1,2,3] 李雪薇[1,2,3] 曹继红 吴燕丽 杨凤芝[1,2,3] 孙玉茹[1,2,3] 

机构地区：[1]北京市和平里医院 [2]铁道部北京铁路总医院 [3]北京有色金属研究总院

出　　处：《北京口腔医学》1999年第3期130-133,共4页Beijing Journal of Stomatology

摘　　要：目的：探讨特制钛镍合金针在弯曲狭窄根管中的充填程度。方法：将离体牙根据狭窄程度及弯曲角度分为６组，以四种材料分别充填，拍摄数字化Ｘ线影像比较各组根充程度。结果：１充填不同弯曲度的狭窄根管，钛镍针明显优于２０号牙胶尖，２５号牙胶尖和钛镍丝；充填不同弯曲度的粗根管，钛镍针与２０号牙胶尖无显著差异（Ｐ＞００５），但与其它材料比较有非常显著性差异（Ｐ＜００１）。２钛镍针在轻度、中度弯曲根管充填程度优于重度弯曲组。结论：特制钛镍针是一种良好的充填弯曲狭窄根管的固体充填材料。Objective:To investigatc the filling dcpths of spccially madc Ti Ni point in the curved And narrowroot canals.Methods:The prepared canals were divided into 6 groups hased on the degree Of curvc and narrowncss.The canals were fillc with four different materials.Digital imaging X rays Were taken.The filling depths were compared on the base of radiograms.Results:1.Ti Ni point was much better than otherthree materials in the filling depthths in narrow root canals with different curves.2.Ti Ni point was better in filling slightly or moderately curved narrow canals than that in severe curved narrow canals.Conclusions:Ti Ni point tilling matcrials is a good filling matcrial for curved and narrow root canals.

关 键 词：特制钛镍合金针 弯曲狭窄根管 固体充填材料 

分 类 号：R781.05[医药卫生—口腔医学]