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 SnF@ dentifrice ( Oral-B Pro-Expert , @ % SnF@ plus @ % NaF ) or the marketed @ % NaF with @ % triclosan/copolymer dentifrice control ( Colgate Total Advanced ) .