The effect of microrough surface treatment on miniscrews used as orthodontic anchors
The effect of microrough surface treatment on miniscrews used as orthodontic anchors
复制标题
DOI：
10.1111/j.1600-0501.2009.01728.x
复制
发表时间：
2009-10-01
影响因子：
4.3
通讯作者：
Liu, Jia-Kuang
中科院分区：
文献类型：
--
作者：
Chang, Chin-Shan;Lee, Tzer-Min;Liu, Jia-Kuang
本研究的目的是探讨两种不同的微粗糙表面处理对微螺钉在体内不同时间的载荷作用的影响。将144个具有机加工（MA）、喷砂和酸蚀刻（SLA）或喷砂和碱蚀刻（SL/NaOH）表面的微型螺钉植入家兔胫骨中。然后，立即对每个胫骨中的三个微螺钉中的两个施加带有镍钛线圈的正畸力，其中一个作为对照。术后2、4、8、12周处死动物。移除扭矩值（RTV）进行了测试和骨-种植体接触（BIC）examined.ResultsIn大多数组，有没有在卸载和加载条件下，在不同的时间段的RTV之间的差异。在负载条件下，SLA组的RTV在愈合4周后显着增加。SL/NaOH组的RTV在8周后增加，12周后与SLA组差异显著。12周后，SLA和SL/NaOH组的BIC高于MA组。回归检验显示BIC和RTV.ConclusionsThere之间的中度相关性在大多数组的加载和卸载条件下没有差异。RTV和BIC随时间增加。在加载条件下，SLA表面的RTV增加较早，在4周时，而SL/NAOH组在8周后显示出最高的RTV。引用本文：Chang C-S，Lee T-M，Chang C-H，Liu J-K.微粗糙表面处理对微螺钉作为正畸锚钉的影响。Res. 20，2009; 1178-1184.
ObjectivesThe aim of this study was to investigate the effects of two different microrough surface treatments on miniscrews with loading over different time periods in vivo.Material and methodsTwenty-four New Zealand white rabbits were selected. One hundred and forty-four miniscrews with a machined (MA), sandblasted and acid-etched (SLA) or sandblasted and alkaline-etched (SL/NaOH) surface were implanted into the tibia of the rabbits. Then, orthodontic forces with Ni-Ti coils were applied immediately to two of the three miniscrews in each tibia, with the center one serving as the control. After 2, 4, 8 and 12 weeks, the rabbits were sacrificed. The removal torque value (RTV) was tested and bone-to-implant contact (BIC) was examined.ResultsIn most groups, there were no differences between the RTV in the unloaded and loaded conditions at different time periods. In the loaded condition, the RTV of the SLA groups increased significantly after 4 weeks of healing. The RTV in the SL/NaOH groups increased after 8 weeks, and reached a significant difference with the SLA groups after 12 weeks. After 12 weeks, the BIC in the SLA and SL/NaOH groups was higher than in the MA groups. A regression test revealed a moderate correlation between the BIC and the RTV.ConclusionsThere were no differences between the loaded and unloaded conditions in most groups. The RTV and BIC increased with time. In the loaded condition, the RTV of the SLA surface increased earlier, at 4 weeks, while the SL/NAOH group showed the highest RTV after 8 weeks.To cite this article:Chang C-S, Lee T-M, Chang C-H, Liu J-K. The effect of microrough surface treatment on miniscrews used as orthodontic anchors.Clin. Oral Impl. Res. 20, 2009; 1178-1184.