Analysis of traction force in distraction osteogenesis for the correction of midfacial lateral deviation

这项研究的目的是使用红色系统测量在牵引成骨过程中表现出上颌骨外侧偏斜的患者的牵引力。在研究期间，定制了一个微型张力计，长度最小为19 mm。对6名接受上颌骨牵引成骨治疗的唇腭裂患者进行了牵引线的拉伸测量。平均上颌骨前移距离为8.6 mm，最大牵引力为18.5N，上颌前移量与牵引力呈显著正相关。1例唇腭裂患者出现上颌偏斜时，使用红色三根牵引钢丝，可获得满意的咬合状态。应用差力矫正上颌骨前后位移位和侧位移位是有效的。

The objective of this study was to measure the traction force during distraction osteogenesis in patients showing lateral deviation of the maxilla using a RED system. For the study period, a micro tension gauge was customized and minimized to a length of 19 mm.Tension of traction wires were measured in 6 cleft lip/palate patients treated using maxillary distraction osteogenesis. The mean distance of maxillary advancement was 8.6 mm, while the maximum traction force, which was calculated by averaging the tension of the right and left side, was found to be 18.5 N. A statistically significant positive correlation was observed between the amount of maxillary advancement and traction force.In a patient with a cleft lip and palate showing lateral maxillary deviation, acceptable occlusion was obtained using the RED system with three traction wires. Application of differential forces was effective for correction of the anteroposterior as well as lateral displacement of the maxilla.