Toothpaste is great for teeth. Polident® is better for dentures.

Toothpaste is abrasive. Dentures are softer than teeth, and toothpaste can scratch them. Odor-causing bacteria can grow in scratches. You can't see those microscopic scratches, but they are the perfect breeding grounds for bacteria. Polident® is not abrasive and gets your dentures clean and fresh and kills 99.9% of odor-causing bacteria.

Bacterial growth on denture material brushed with ordinary toothpaste.
Bacterial growth on denture material brushed with Polident solution.