Molars were randomly divided into four groups in order to receive topical treatment with the following fluorinated compounds: 1 silver ammonium fluoride, 2 difluorsilane, 3 acidulated phosphate fluoride and 4 a control group.
Se dividieron aleatoriamente en cuatro grupos para recibir tratamiento tópico con los siguientes productos fluorados: 1 fluoruro de plata amoniacal, 2 difluorsilano, 3 flúor fosfato acidulado y 4 un grupo control.