Random assignment to one of two dentifrice test groups via age , gender , and thermal sensitivity of enrolled test teeth was performed at baseline , with subjects assigned to twice-daily unsupervised brushing with either the marketed SnF2 dentifrice ( Oral-B Pro-Expert , 0.454 % SnF2 plus 0.077 % NaF ) or the marketed 0.32 % NaF with 0.3 % triclosan/copolymer dentifrice control ( Colgate Total Advanced ) .