Chinese Journal of Tissue Engineering Research ›› 2018, Vol. 22 ›› Issue (18): 2860-2865.doi: 10.3969/j.issn.2095-4344.0884
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Zhang Ming-can1, Ma Xiao-zhou2, Wu Jie2, Zhao Wei2, Sun Hai-yuan1, Zhao Yi-song1
Received:
2018-05-13
Online:
2018-06-28
Published:
2018-06-28
About author:
Zhang Ming-can, Master, Associate chief physician, Tanggu Stomatological Hospital, Tianjin 300450, China
Supported by:
the Science and Technology Project funded by the Health Department of Tianjin Binhai New District, No. 2013Bwky023; the Science and Technology Research Fund of the Stomatological Hospital of Tianjin Medical University, No. 2014YKYQ02
CLC Number:
Zhang Ming-can, Ma Xiao-zhou, Wu Jie, Zhao Wei, Sun Hai-yuan, Zhao Yi-song. Frictional resistance of archwires with various ligations in alignment phase[J]. Chinese Journal of Tissue Engineering Research, 2018, 22(18): 2860-2865.
不同托槽与弓丝组合的摩擦力值如图3-5所示。每组测量项目为最大静摩擦力和滑动摩擦力,数据精确度为 0.000 1 N。此次研究为提高组间可比性,所采用的测试弓丝为0.30 mm(0.012英寸)、0.36 mm(0.014英寸)低摩擦NiTi弓丝,不仅同一弓丝与不同托槽间具有对比价值,而且同一托槽与不同弓丝间的数值也具有可比性。 实验选择中度拥挤病例,牙齿和托槽间较宽松,牙齿移动时经典摩擦力以滑动摩擦力表现[7],故选取滑动摩擦力进行多组间统计分析,有如下结果:①当使用0.30 mm (0.012英寸)低摩擦NiTi丝时,在不同材料托槽或不同结扎方式中的摩擦力两两比较差异均有显著性意义(P < 0.05),但要除过Damon Clear与3M-松结扎组、Damon CLear组与Damon 3MX组的比较;②当使用0.36 mm(0.014英寸)NiTi丝时,3M-松结扎组与Damon 3MX组、3M-紧结扎组与Habit-松结扎组、Damon Clear组与3M-松结扎组的摩擦力比较无差异(P > 0.05),3M-松结扎组、Damon Clear组、Damon 3MX组3者间的摩擦力相似;③当使用0.30 mm (0.012英寸)低摩擦NiTi丝入槽时,Damon Clear组的摩擦力值略大于Damon 3MX托槽,但组间不显著(P < 0.05);当使用0.36 mm(0.014英寸)低摩擦NiTi丝入槽时,Damon Clear组与Damon 3MX组的摩擦力比较无差异(P > 0.05);④在Damon Clear托槽、3M传统金属托槽紧结扎和松结扎中,两种弓丝间的摩擦力比较无明显差异(P > 0.05);在Damon 3MX金属自锁托槽、Habit传统单晶体托槽紧结扎和松结扎中,两种弓丝间的摩擦力比较差异有显著性意义(P < 0.001),见表1-4。 "
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