Evaluation of total pH and solubre and ionic fluoride concentrations in dentifricies commercially available in Brazil - Bardal, Priscila Ariede Petinuci; Olympio, Kelly Polido Kaneshiro; Cardoso, Vanessa Eid da Silva; Bastos, José Roberto de Magalhães; Buzalaf, Marília Afonso Rabelo (Oral Health Preventive Dentistry, 2003)