Gingival crevicular fluid volume and periodontal parameters alterations after use of conventional and self-ligating brackets - Bergamo, Ana Zilda Nazar; Nelson Filho, Paulo; Romano, Fábio Lourenço; Silva, Raquel Assed Bezerra da; Saraiva, Maria da Conceicao Pereira; Silva, Léa Assed Bezerra da; Matsumoto, Mirian Aiko Nakane (Journal of Orthodontics, 2016)