Tseng Y-C, Hsieh C-H, Chen C-H, Shen Y-S, Huang I-Y, Chen C-M
Department of Orthodontics, Kaohsiung Medical University, Kaohsiung, Taiwan.
Int J Oral Maxillofac Surg. 2006 Aug;35(8):704-7. doi: 10.1016/j.ijom.2006.02.018. Epub 2006 May 9.
The aim of this study was to explore the use of mini-implants for skeletal anchorage, and to assess their stability and the causes of failure. Forty-five mini-implants were used in orthodontic treatment. The diameter of the implants was 2mm, and their lengths were 8, 10, 12 and 14mm. The drill procedure was directly through the cortical bone without any incision or flap operation. Two weeks later, a force of 100-200g was applied by an elastometric chain or NiTi coil spring. Risk factors for the failure of mini-implants were examined statistically using the Chi-square or Fisher exact test as applicable. The average placement time of a mini-implant was about 10-15min. Four mini-implants loosened after orthodontic force loading. The overall success rate was 91.1%. The location of the implant was the significant factor related to failure. In conclusion, the mini-implants are easy to insert for skeletal anchorage and could be successful in the control of tooth movement.
本研究的目的是探索微型种植体用于骨锚固的情况，并评估其稳定性及失败原因。45枚微型种植体用于正畸治疗。种植体直径为2mm，长度分别为8、10、12和14mm。钻孔过程直接穿过皮质骨，无需任何切口或翻瓣手术。两周后，通过弹力链或镍钛螺旋弹簧施加100 - 200g的力。根据适用情况，使用卡方检验或Fisher精确检验对微型种植体失败的危险因素进行统计学检查。一枚微型种植体的平均植入时间约为10 - 15分钟。正畸力加载后有4枚微型种植体松动。总体成功率为91.1%。种植体的位置是与失败相关的重要因素。总之，微型种植体易于植入用于骨锚固，并且在控制牙齿移动方面可能会成功。
