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目的:探讨SUS~2矫治器治疗恒牙早期安氏Ⅱ类错畸形患者的临床疗效。方法:选择23例12~15岁安氏Ⅱ类错患者,采用直丝弓矫治器常规排齐整平上下牙列后,配戴SUS~2矫治器治疗6~9个月,对矫治前后X线头颅侧位片进行头影测量分析。结果:23例患者矫治后侧貌改善明显,覆、覆盖正常,磨牙关系为Ⅰ类或接近Ⅰ类。头影测量分析显示ANB、UL-E、LL-E、OB、OJ、PP-FH及Y轴治疗后显著减小(P<0.05);SNB、Go-Gn、Ar-Go、L1-MP治疗后显著增大(P<0.05);OP-FH、SNA、SN-MP、U1-SN治疗后无明显变化(P>0.05)。结论:SUS~2矫治器联合直丝弓技术治疗恒牙早期安氏Ⅱ类错时可有效地利用下颌骨的生长潜力,刺激下颌骨的生长从而获得明显的骨骼及侧貌改变,值得临床推荐。
Objective: To investigate the clinical effect of SUS ~ 2 appliance in the treatment of early Class Ⅱ malocclusion patients. Methods: Twenty-three patients with Class Ⅱ malocclusion aged 12 to 15 years old were selected. The patients were treated with SUS ~ 2 appliance for 6 ~ 9 months after straightening the upper and lower dentition by straight wire appliance. Cephalometric films for cephalometric analysis. Results: All the 23 patients showed obvious improvement in the appearance of the flank, the coverage and coverage were normal, and the molars relationship was type Ⅰ or close to type Ⅰ. Cephalometric analysis showed significant decreases in ANB, UL-E, LL-E, OB, OJ, PP-FH and Y axis after treatment (P <0.05); SNB, Go-Gn, Ar-Go and L1-MP (P <0.05). No significant changes were found in OP-FH, SNA, SN-MP and U1-SN after treatment (P> 0.05). CONCLUSIONS: The combination of SUS ~ 2 appliance and straight wire arch technique in the treatment of Class Ⅱ malocclusion of early permanent teeth can effectively utilize the growth potential of the mandible and stimulate the growth of the mandible to obtain obvious skeletal and lateral changes. It is worth clinical recommend.