The aims of this cross-sectional study were to investigate the regulatory compliance of Dutch practice websites offering orthodontic services, readability of the available treatment information, website design as well as possible relationship with practice location and professional qualification of practitioners. A comprehensive Internet search was performed using the Google search engine and five relevant terms in Dutch. Eligibility screening of the first 50 results of each search led to the final inclusion of 111 websites. The content of the selected websites was evaluated in terms of compliance to international regulations on ethical advertising guidelines (CED), treatment information text readability using Flesch Reading Ease Score (FRES), and website design using the BDC assessment tool. Reporting of websites according to CED guidelines covered on average 85% of the mandatory items. No significant differences were observed between dental and orthodontic practices, and between practices located in densely and sparsely populated regions (P > 0.05). The mean FRES of the displayed information indicated difficult-to-understand text. BDC scores of multi-location practices were significantly higher than the rest (P < 0.006). The websites of orthodontic practices in The Netherlands do not fully comply with CED guidelines on ethical advertising. Readability of the displayed information and website technical performance needs to be further optimized.

中文翻译：

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荷兰正畸实践网站的信息价值和设计。

这项横断面研究的目的是调查提供正畸服务的荷兰执业网站的法规遵从性，可用治疗信息的可读性，网站设计以及与执业地点和执业者专业资格的可能关系。使用Google搜索引擎和五个荷兰语相关术语进行了全面的Internet搜索。对每个搜索的前50个结果进行资格筛选导致最终纳入111个网站。所选网站的内容经过以下方面的评估：符合国际道德广告准则（CED），使用Flesch Reading Ease Score（FRES）的治疗信息文字可读性以及使用BDC评估工具的网站设计。根据CED指南报告的网站平均覆盖了强制性项目的85％。在牙科和正畸实践之间以及在人口稠密和稀疏地区的实践之间均未观察到显着差异（P> 0.05）。显示信息的平均FRES表示难以理解的文本。多地点实践的BDC得分显着高于其余（P <0.006）。荷兰的牙齿矫正实践网站不完全符合CED道德广告指南。显示信息的可读性和网站技术性能需要进一步优化。以及位于人口稠密和人口稀少地区的实践之间（P> 0.05）。显示信息的平均FRES表示难以理解的文本。多地点实践的BDC得分显着高于其余（P <0.006）。荷兰的牙齿矫正实践网站不完全符合CED道德广告指南。显示信息的可读性和网站技术性能需要进一步优化。以及位于人口稠密和人口稀少地区的实践之间（P> 0.05）。显示信息的平均FRES表示难以理解的文本。多地点实践的BDC得分显着高于其余（P <0.006）。荷兰的牙齿矫正实践网站不完全符合CED道德广告指南。显示信息的可读性和网站技术性能需要进一步优化。