Effect of dentifrices with different pH and fluoride concentrations on fluoride levels in biofilm and nails: an RCT - Campos, Fernanda de Araújo Trigueiro; Caldas, Aparecida Tharlla Leite de; Santos, Carlus Alberto Oliveira dos; Silva, Silmara Andrade; Vieira, Andre Parente de Sá Barreto; Viana Filho, José Maria Chagas; Buzalaf, Marília Afonso Rabelo; Sampaio, Fábio Correia; Cardoso, Cristiane de Almeida Baldini (Brazilian Oral Research, 2022)