Pawar Rahul, Nath Shib Kumar, Kumar P Kiran, Patel Khyati, Arvind Mengi, Shah Alap, Dave Bela, Mehta Dhaval Niranjan
Department of Orthodontic and Dentofacial Orthopaedics, JCD Dental College, Sirsa, Haryana, India.
Consultant Orthodontist, The Smile Architect Dental Clinic and Braces Centre, Agartala, Tripura, India.
Bioinformation. 2023 Dec 31;19(13):1318-1323. doi: 10.6026/973206300191318. eCollection 2023.
It is of interest to compare two myofunctional appliances (frankal appliance and twin bloc) and two fixed orthodontic appliances (PowerScope and Forsus) in management of class II div 1 malocclusion. A total of 56 Class II division 1 malocclusion patients indicated for treatment with myofunctional appliances and fixed functional appliances were randomized. They were equally divided among frankal appliance (n=14), twin block appliance (n=14), PowerScope (American Orthodontics) (n=14), Forsus (3M Unitek Corp) groups (n=14). Skeletal and dentoalveolar effects of all appliances were compared. SNB increased remarkably by 4.2° in the Twin block group and it was high among all treatment groups. There was a significant decrease in vertical dimensions (SN-GoGn) in the Twin block (p = 0.002). Early treatment of Class II due to mandibular retrusion with Twin block functional appliance is recommended due to its favorable skeletal effect.
比较两种肌功能矫治器（Frankel矫治器和Twin Bloc矫治器）以及两种固定正畸矫治器（PowerScope矫治器和Forsus矫治器）在治疗安氏II类1分类错牙合中的效果很有意义。共有56名适合使用肌功能矫治器和固定功能矫治器治疗的安氏II类1分类错牙合患者被随机分组。他们被平均分为Frankel矫治器组（n = 14）、Twin Bloc矫治器组（n = 14）、PowerScope矫治器组（美国正畸公司，n = 14）、Forsus矫治器组（3M Unitek公司，n = 14）。比较了所有矫治器对骨骼和牙牙槽的影响。Twin Bloc矫治器组的SNB显著增加了4.2°，在所有治疗组中增幅最大。Twin Bloc矫治器组的垂直维度（SN - GoGn）有显著减小（p = 0.002）。由于Twin Bloc功能矫治器对骨骼有良好影响，因此建议对因下颌后缩导致的安氏II类错牙合进行早期治疗。
