Abstract
Data regarding the quality of information (QOI) related to orthodontic clear aligners (OCAs) on the internet are lacking. The aim of the present investigation was to assess the quality and readability of websites providing information regarding OCAs to prospective patients. Three search terms were entered separately into three search engines. Four validated QOI instruments were used to determine the QOI and readability of the content contained within the websites that satisfied predetermined criteria. Descriptive statistical analyses and intrarater testing for DISCERN scores were calculated. Forty-nine websites satisfied inclusion/exclusion criteria. General dentists (44.9%) and specialist orthodontists (26.5%) authored the majority of websites. One website contained the Health on the Net (HON) code seal. Cohen's kappa for DISCERN scores was good (0.87). The overall mean (SD) DISCERN score was 38.55 (8.00)/80, range 26-60. The websites authored by 'Direct-to-consumer' OCA providers recorded the lowest DISCERN mean score (33/80). One website contained all four Journal of the American Medical Association (JAMA) benchmarks. The mean (SD) Flesch Reading Ease score was 53.92 (9.08), range 36-82.5. The QOI of the website content related to OCAs is poor and is 'fairly difficult' to read. Website authors should consider using QOI instruments and readability tools to enable the delivery of evidence-based and easily readable information regarding OCAs to prospective patients.
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