The objective of these two six-week , double-blind clinical studies was to compare the extrinsic stain prevention ( Study # 1 ) and stain removal ( Study # 2 ) efficacy of a new dentifrice ( Colgate Total Advanced Toothpaste ) containing 0.3 % triclosan / 2.0 % polyvinylmethyl ether/maleic acid ( PVM/MA ) copolymer/0 .243 % sodium fluoride in a 17 % dual silica base , to a commercially available fluoride dentifrice without tooth whitening ingredients ( Crest Cavity Protection Toothpaste ) containing 0.243 % sodium fluoride in a silica base .
