Accepted Article This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1111/jcpe.13083 This article is protected by copyright. All rights reserved. Article type: Original Research Articles Effect of mHealth in improving oral hygiene: a systematic review with meta-analysis M. P. Toniazzo 1 , D. Nodari 1 , F.W.M.G. Muniz 2 , P. Weidlich 1 1- Department of Periodontology, Federal University Rio Grande do Sul, Porto Alegre, Brazil 2- Department of Periodontology, Federal University Pelotas, Pelotas, Brazil Running title: mHealth for oral hygiene Key-words: mHealth, mobile app, text messages, oral condition, behavior change. Address for correspondence: Patricia Weidlich Federal University of Rio Grande do Sul- Department of Conservative Dentistry Rua Ramiro Barcelos, 2492 – Santa Cecilia Porto Alegre, RS, Brazil Zip code: 90035-003 Tel: +55 51 3308-5318 Email: patricia.weidlich@ufrgs.br