Recommended placement torque when tightening an orthodontic mini-implant
Recommended placement torque when tightening an orthodontic mini-implant
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DOI：
10.1111/j.1600-0501.2005.01211.x
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发表时间：
2006-02-01
影响因子：
4.3
通讯作者：
Shimizu, N
中科院分区：
文献类型：
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作者：
Motoyoshi, M;Hirabayashi, M;Shimizu, N
为了确定适当的放置扭矩，以获得更好的成功率，将微型种植体拧入后部区域的颊侧牙槽骨中作为正畸治疗的锚，测量种植体放置扭矩（IPT）。受试者为41名正畸患者（124个种植体），平均年龄为24.9岁（SD 6.5岁），接受了钛微型种植体植入手术。使用扭矩螺丝刀测量IPT的峰值。微型种植体锚对124颗种植体的成功率为85.5%。平均IPT范围为7.2 - 13.5 N cm，取决于植入物的位置。上、下颌骨的IPT差异有统计学意义。出乎意料的是，失败组的下颌骨IPT显著高于成功组。因此，不应总是使用大IPT。根据我们对失败风险比的计算，为了提高1.6 mm直径微型种植体的成功率，推荐的IPT范围为5 - 10 N cm。
To determine an adequate placement torque for obtaining a better success rate of mini-implants that are screwed into the buccal alveolar bone of the posterior region as an anchor for orthodontic treatment, implant placement torque (IPT) was measured. The subjects were 41 orthodontic patients (124 implants), with an average age of 24.9 years (SD 6.5 years), who had surgery to place titanium mini-implants. The peak value of IPT was measured using a torque screwdriver. The success rate of the mini-implant anchor for 124 implants was 85.5%. The mean IPT ranged from 7.2 to 13.5 N cm, depending on the location of the implants. There was a significant difference in the IPT between maxilla and mandible. The IPT in the mandible was, unexpectedly, significantly higher in the failure group than in the success group. Therefore, a large IPT should not be used always. According to our calculations of the risk ratio for failure, to raise the success rate of 1.6-mm diameter mini-implants, the recommended IPT is within the range from 5 to 10 N cm.