ssociation between industry support and the reporting of study outcomes in randomized clinical trials of dental implant research from the past 20 year

Autor(es)

Dini, Caroline ^[1] ; Alves Pereira, Marta Maria ^[2] ; Silva Souza, Joao Gabriel ^{[1, 3, 4]} ; Shibli, Jamil A. ^[3] ; Avila, Erica Dorigatti ^[2] ; Barao, Valentim Adelino R. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Campinas UNICAMP, Dept Prosthodont & Periodontol, Piracicaba Dent Sch, Av Limeira 901, BR-13414903 Piracicaba, SP - Brazil

^[2] Sao Paulo State Univ UNESP, Dept Dent Mat & Prosthodont, Sch Dent Araraquara, Araraquara, SP - Brazil

^[3] Univ Guarulhos, Dept Periodontol & Oral Implantol, Dent Res Div, Guarulhos - Brazil

^[4] Fac Ciencias Odontol FCO, Dent Sci Sch, Montes Claros, MG - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH; v. 24, n. 1 JAN 2022.
• Citações Web of Science: 0

Resumo

Background Industry support is a significant funding source in implant dentistry research, not only to provide regulatory processes, but also to validate and promote products through randomized clinical trials (RCTs). However, industry funding should not affect scientific outcomes. Purpose The aim of this study was to investigate whether there is an association between industry support for RCTs in implant dentistry and a greater chance of the reporting of positive outcomes, and whether there are other funding tendencies. Materials and Methods Randomized clinical trials from five implant dentistry journals were reviewed. Data were extracted, and descriptive and inferential statistical analyses (alpha = 0.05), including bivariate and multivariable logistic regression, and Spearman's correlation were performed. Results Two hundred eleven RCTs were included. Industry-funded and -unfunded studies presented similar outcomes, in terms of positive and negative results (p >= 0.05). North American and European countries received more industry funding, as did high-income countries, which showed well-established collaboration with each other. Clinical Oral Implants Research and Clinical Implant Dentistry and Related Research published 83.6% of industry-funded articles. Industry-funded studies from middle-income countries established more international collaborations with high-income countries than did unfunded studies. Citation numbers were similar for funded and unfunded studies. The chance of RCTs being industry-funded was higher for high-income (odds ratio {[}OR] = 3.00; 95% confidence interval {[}CI], 0.99-9.32; p = 0.05) and North American articles (OR = 3.40; 95% CI, 1.37-8.42; p = 0.008) than in lower-middle-income and other continents, respectively. Higher industry funding was associated with specific topics such as ``surgical procedures,{''} ``prosthodontics topics,{''} and ``implant macrodesign{''} (OR = 4.7; 95% CI, 1.45-15.20; p = 0.010) and with the increase in numbers of institutions (OR = 1.52; 95% CI, 1.16-2.0; p = 0.002). Conclusion The available evidence suggests no association between industry funding and greater chances of the reporting of positive outcomes in implant dentistry RCTs. A strong association was identified in industry trends concerning geographic origins, higher numbers of institutions, and specific research topics. (AU)

• Processo FAPESP: 20/05234-3 - Desenvolvimento de um novo hidrogel termosensitivo para liberação controlada de drogas direcionado a prevenção e ao tratamento de inflamações peri-implantares
• Beneficiário: Caroline Dini
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 20/05231-4 - Desenvolvimento de um novo hidrogel termosensitivo para liberação controlada de drogas direcionado a prevenção e ao tratamento de inflamações peri-implantares
• Beneficiário: Valentim Adelino Ricardo Barão
• Modalidade de apoio: Auxílio à Pesquisa - Regular