García-Espona Ignacio, Kanine-Ait-Zalim Ahmed Amine, Alarcón José Antonio, García-Espona Cristina, García-Espona Eugenia
Department of Stomatology, Section of Orthodontics, School of Dentistry, Campus Universitario de Cartuja s/n, University of Granada, Granada, Spain.
President of the Spanish Association of Orthodontists (AESOR), Madrid, Spain.
PLoS One. 2025 May 20;20(5):e0324810. doi: 10.1371/journal.pone.0324810. eCollection 2025.
Scientific contributions (lectures and posters) to the American Association of Orthodontists (AAO) annual sessions from 2013 to 2023 were investigated with the aims of analysing the contributions of each country and their efficiency, presentation trends, and gender differences during these years as well as the most frequent topics and their evolution. Official data were requested from and provided by the AAO secretary. The year and type of presentation; the name, country and gender of the first author; and the full title of the presentation were considered. In addition, six national indicators that could determine the quantity and quality of scientific production were obtained from the Our World in Data website with regard to the countries that made the greatest contributions to the AAO annual sessions. The USA featured the largest number of lecturers (69.44%), while the presentations of posters were more balanced among the 4 countries that exhibited the highest levels of production (i.e., Brazil, the USA, Mexico and South Korea). Brazil was the main country to perform above expectations. The COVID-19 pandemic resulted in a significant reduction in the number of poster presentations. The male/female ratio was close to 3:1 in terms of lectures and close to 1:1 in terms of posters. In 2023, women presented more posters than did men. The terms clear/aligners and digital were strongly present, and the terms maxillary, adults, and expansion were used increasingly frequently, while the use of the terms brackets or cephalometry decreased. American lecturers included terms that differentiated them from lecturers in other countries. The nationalities of lecturers are not closely related to those of posters, particularly with regard to the USA, Brazil, Canada, Mexico and Turkey. Research spending and economic level are the most significant factors with respect to the type and number of a country's contributions. Concerning gender, a clear imbalance in favour of men persists among lecturers. Increased distance from the USA makes it more difficult for women to serve as lecturers. An emergent paradigm shift in current topics towards a focus on the terms clear/aligners and digital in lectures is evident.
对2013年至2023年美国正畸医师协会（AAO）年会的科学贡献（讲座和海报）进行了调查，目的是分析各国的贡献及其效率、展示趋势、这些年的性别差异，以及最常见的主题及其演变。向AAO秘书请求并由其提供了官方数据。考虑了发表年份和类型、第一作者的姓名、国家和性别以及展示的完整标题。此外，从Our World in Data网站获取了六个国家指标，这些指标可以确定对AAO年会贡献最大的国家的科研产出数量和质量。美国的讲师人数最多（69.44%），而在产出水平最高的4个国家（即巴西、美国、墨西哥和韩国）中，海报展示更为均衡。巴西是表现超出预期的主要国家。COVID-19大流行导致海报展示数量大幅减少。讲座方面的男女比例接近3:1，海报方面接近1:1。2023年，女性展示的海报比男性多。“透明矫治器/隐形矫治器”和“数字化”等术语大量出现，“上颌”“成人”和“扩弓”等术语的使用频率越来越高，而“托槽”或“头影测量”等术语的使用减少。美国讲师使用的术语使其与其他国家的讲师有所区别。讲师的国籍与海报作者的国籍没有密切关系，特别是在美国、巴西、加拿大、墨西哥和土耳其方面。研究支出和经济水平是一个国家贡献的类型和数量的最重要因素。在性别方面，讲师中明显存在有利于男性的不平衡。与美国距离越远，女性担任讲师就越困难。当前主题出现了明显的范式转变，在讲座中越来越关注“透明矫治器/隐形矫治器”和“数字化”等术语。
