Using information and communication technologies (ICTs) to solve the repressed demand for primary dental care in the Brazilian Unified Health System due to the COVID-19 pandemic: a randomized controlled study protocol nested with a before-and-after study including economic analysis - Natal, Karina Haibara; Machado, Thais Gomes; Bracco, Fabiana; Lemos, Luiz Ivan; Vigano, Maria Eduarda; Machado, Gabriela Manco; Vargas, Jhandira Daibelis Yampa; Raggio, Daniela Prócida; Mendes, Fausto Medeiros; Imparato, José Carlos Pettorossi; Lucena, Edson Hilan Gomes de; Cavalcanti, Yuri Wanderley; et al. (BMC Oral Health, 2022)