Short-term efficacy of vacuum-formed maintainer for deciduous second molar space maintenance in the mixed dentition: a single-centre, randomized controlled clinical trial - Barros, Sérgio Estelita Cavalcante; Siqueira, Simone Pinheiro; Janson, Guilherme; Chiqueto, Kelly Fernanda Galvão (Orthodontics and Craniofacial Research, 2021)