【摘要】 目的 比较前方牵引器与FR-Ⅲ矫治器对Ⅲ类错(牙合)的矫治效果。方法 采用前方牵引器和FR-Ⅲ矫治器分别矫治20例Ⅲ类错(牙合)病例,进行治疗前后X线头影测量比较。结果 前方牵引器矫治后“A”点前移2.6mm,“Pg”点移动不明显;FR-Ⅲ矫治后,“A”点前移1.3mm,“Pg”点位置后移0.3mm。结论 前方牵引器治疗Ⅲ类错(牙合)畸形骨性变化大于FR-Ⅲ矫治器治疗Ⅲ类错(牙合)患者,而FR-Ⅲ矫治器治疗后软组织改善更佳。更多还原

【Abstract】 Objective this study was designed to curative effect of patients with anterior crossbits between reverse headgear and FR-Ⅲ. Method Eight patients with anterior crossbits were treated with reverse headgear. Twelve patients with anterior crossbits were treated with FR-Ⅲ. Pretreatment and posttreatment cephalometric analysis was car ried out. Result After treating with reverse headger "A" point moved forward 2.6 mm and "Pg" point had no change. After treating with FR-Ⅲ, "A" point moved forward 1.3 mm and "Pg" point moved backward 0.3 mm. Conclusion Treatment with reverse headgear was better than treatment with FR-Ⅲ in skeletal changes of patients with anterior crossbits, and treatment with FR-Ⅲ in soft tissue facial type was better than reverse headgear.更多还原