[Analyzing the social impact of orthodontic articles published by Chinese authors in international journals during the past five years].

Objective: To evaluate and analyze the social impact of orthodontic articles published by Chinese authors in international journals during the past five years, using an altmetric tool; and to explore the practical value of altmetrics measures in the evaluation of dental research. Methods: PubMed was searched via the Altmetric Explorer platform to identify orthodontic research articles that were published during 2012-2016, with at least one affiliation from China. Commentaries, news reports and editorials were excluded. By reading titles and abstracts, two authors carried out inclusion and exclusion of literature independently to exclude articles that are not related to orthodontics and retracted articles. Data extraction was performed simultaneously. Any disagreement was resolved by discussion. Linear regressions were used to analyze the association between Altmetric attention score (AAS) and potentially related factors. Results: Among 864 articles identified from PubMed, a total of 206 received an AAS, and 160 articles were included for analyzing. The mean AAS of orthodontic research articles from China was 2.7 (95% confidence interval: 2.0 to 3.4). American Journal of Orthodontics and Dentofacial Orthopedics had the most scored articles (n=24) and the highest total AAS (67.0), while European Journal of Orthodontics had the highest mean AAS (3.8). All the top-3 articles were published in Cochrane Database of Systematic Reviews. Significant positive associations were found among high impact factors (P<0.05), high level of evidence (P<0.001) and the AAS. Conclusions: Publishing more high-impact articles and high level of evidence articles improved the international social impact of orthodontic research from China. As a valuable supplement to citation counts, Altmetric measures had practical values in dental research area.目的： 通过补充计量学工具评价和分析近5年我国学者发表于国际期刊的口腔正畸研究论文的社会影响力，探索补充计量学在口腔医学科研评估中的应用价值。 方法： 通过Altmetric Explorer平台检索PubMed数据库中发表于2012年1月至2016年12月期间、至少1个作者单位来自我国、与口腔正畸学基础或临床相关且已获有效Altmetric关注度评分（Altmetric attention score，AAS）的研究论文，同时排除非研究性文章（述评、新闻、编者的话）。由两位研究人员通过阅读文题和摘要，独立进行文献的排除、纳入，确认排除与正畸无关的研究论文及撤稿论文，并进行数据提取，如有异议通过讨论达成共识。采用线性回归分析AAS与影响因子、证据等级等潜在影响因素的相关性。 结果： PubMed数据库中符合检索条件的864篇文献中，206篇获得AAS，最终纳入160篇文献进行分析。近5年我国学者口腔正畸研究论文的AAS平均为2.7分（95%置信区间为2.0~3.4分）。获得AAS文章数量最多（24篇）且AAS累计分数最高（67.0分）的期刊为American Journal of Orthodontics and Dentofacial Orthopedics，文章AAS平均分数最高（3.8分）的期刊为European Journal of Orthodontics。AAS分数最高的3篇论文均发表于Cochrane Database of Systematic Reviews。根据多元线性回归，高影响因子（P<0.05）和高证据等级（P<0.001）均与论文AAS呈显著正相关。 结论： 增加高影响因子期刊论文和高证据等级论文的发表有利于提升国际期刊上我国学者口腔正畸研究论文的社会影响力。补充计量学作为传统文献计量学的补充，在口腔医学研究领域具有现实应用价值。.