Yilmaz Hanife Nuray, Garip Hasan, Satilmis Tulin, Kucukkeles Nazan
a Research Assistant, Department of Orthodontics, Faculty of Dentistry, Marmara University, Istanbul, Turkey.
Angle Orthod. 2015 Jan;85(1):48-57. doi: 10.2319/121513-921.1.
To analyze the treatment effects of corticotomy-assisted maxillary protraction with skeletal anchorage and Class III elastics in patients with Class III malocclusions.
The study group consisted of 19 patients with a mean age of 13.12 ± 1.28 years. Initially, patients were monitored for 5 months before treatment to evaluate growth changes. Changes during control, protraction and fixed orthodontic treatment periods were compared with the cephalometric radiographs taken initially, before protraction, after protraction, and after fixed orthodontic treatment. Treatment outcomes also were compared with the growth effects.
Sagittal measurements of maxilla showed significant improvements (3.59 ± 1.32 mm) during the protraction period (3.85 ± 1.12 months) whereas no significant changes were seen during the control period. Upper and lower incisor inclinations were increased, and the upper occlusal plane angle showed significant counterclockwise rotation during protraction. Significant soft-tissue changes also reflected the underlying skeletal changes. Maxillary advancement was stable during fixed orthodontic treatment.
Compared with control period of the patients, this protocol produced significant improvements in skeletal and soft-tissue structures.
分析骨皮质切开辅助上颌骨牵引联合骨支抗及Ⅲ类牵引矫治Ⅲ类错牙合患者的治疗效果。
研究组由19例患者组成，平均年龄13.12±1.28岁。治疗前，患者先接受5个月的监测以评估生长变化。将控制期、牵引期和固定正畸治疗期的变化与治疗前、牵引前、牵引后及固定正畸治疗后的头影测量X线片进行比较。治疗结果也与生长效应进行了比较。
上颌骨矢状向测量显示，在牵引期（3.85±1.12个月）有显著改善（3.59±1.32mm），而在控制期未见明显变化。牵引过程中，上下切牙倾斜度增加，上颌牙合平面角出现显著逆时针旋转。显著的软组织变化也反映了潜在的骨骼变化。在固定正畸治疗期间，上颌骨前移稳定。
与患者的控制期相比，该方案在骨骼和软组织结构方面有显著改善。
