Department of Orthodontics, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico. University of Milan, Italy.
Eur J Paediatr Dent. 2018 Dec;19(4):295-299. doi: 10.23804/ejpd.2018.19.04.8.
The aim of this study consists in comparing the two-step treatment with that performed in a single-step in adolescent patients.
Study design: This paper is a critical review of the literature with a systematic approach. The search for scientific articles was performed on the US National Library of Medicine database using the PubMed service. Keywords set: "Early treatment Class II OR 1-phase orthodontics OR orthodontic timing Class II". From the initial screening 20 articles were selected of which the full text has been researched and evaluated.
The selected articles were reviewed and evaluated by two independent operators, who both excluded two papers. Ultimately 13 articles were selected that refer to four major working groups, respectively from Manchester, North Carolina, Florida and Queen Mary University of London.
We can assume that both the one- and two-step treatment are effective in correcting Class II malocclusion, with no significant difference of outcome, except for the incidence of incisor trauma, which was significantly lower for the early treatment group.
本研究旨在比较两步治疗与青少年患者一步治疗的效果。
研究设计：本文是对文献的批判性综述，采用系统方法。使用美国国家医学图书馆的 PubMed 服务在数据库中搜索科学文章。关键词设置：“早期治疗 II 类或 1 期正畸或 II 类正畸时机”。从最初的筛选中，选择了 20 篇文章，研究并评估了其全文。
两名独立操作人员对选定的文章进行了审查和评估，他们都排除了两篇文章。最终选择了 13 篇文章，分别来自曼彻斯特、北卡罗来纳州、佛罗里达州和伦敦玛丽女王大学的四个主要工作组。
我们可以假设，两种治疗方法（一步治疗和两步治疗）在纠正 II 类错颌方面都同样有效，结果没有显著差异，除了切牙创伤的发生率，早期治疗组明显较低。
