Alteration of the mandibular plane during sagittal split advancement: Short- and long-term stability
Alteration of the mandibular plane during sagittal split advancement: Short- and long-term stability
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DOI：
10.1016/j.tripleo.2006.12.023
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发表时间：
2007-08-01
期刊：
影响因子：
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通讯作者：
Rugh, John D.
中科院分区：
文献类型：
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作者：
Frey, Daniela Rezende;Hatch, John P.;Rugh, John D.
目标。我们研究了双侧矢状劈开截骨术 (BSSO) 手术下颌前移的长期和短期稳定性的预测因素。研究设计。 II 类患者 ( n = 127) 通过 BSSO 采用刚性内固定或钢丝接骨术接受下颌前移。我们使用多元线性回归分析来评估预测变量与治疗后 2 年水平和垂直 B 点移动的关联。结果。除 8 周外，在所有时间段内，下颌平面成角 (MPA) 逆时针旋转均与较大的水平和垂直复发相关。钢丝接骨术、更大的进步、更年轻的年龄和颏成形术与复发显着相关。结论。手术闭合 MPA 与晚期水平和垂直复发相关，而固定类型与早期 B 点移动相关。下颌骨向前和向上重新定位、颏成形术和年轻化等方面的巨大进步也在 BSSO 后的复发中发挥着作用。
Objectives. We investigated predictors of long- and short-term stability of surgical mandibular advancements with bilateral sagittal split osteotomy (BSSO).Study design. Class II patients ( n = 127) received mandibular advancement through BSSO with either rigid internal fixation or wire osteosynthesis. We used multiple linear regression analysis to assess the association of predictor variables with post-treatment horizontal and vertical B-point movement through 2 years.Results. Counterclockwise rotation of the mandibular plane angulation (MPA) was associated with greater horizontal and vertical relapse at all time periods except 8 weeks. Wire osteosynthesis, larger advancements, younger age, and genioplasty were significantly associated with relapse.Conclusions. Surgically closing the MPA is associated with late horizontal and vertical relapse, whereas fixation type is related to early B-point movement. Large advancements with forward and upward repositioning of the mandible, genioplasty, and young age also play a role in relapse after BSSO.