Improved. Kills 99.9% of odor-causing bacteria and other microorganisms. Cleans metal partial surfaces and orthodontic retainers. Micro clean formula. For your oral health. Why clean dentures with Polident instead of toothpaste? Dentures are a lot softer than teeth. Toothpaste contains abrasives that can scratch dentures. Bacteria can grow in scratches, which can cause bad breath. Improved Polident microclean formula kills 99.9% of odor-causing bacteria and other microorganisms. Denture hygiene is an important part of good oral health. Use Polident instead of toothpaste everyday for a clean denture and healthy mouth. Polident kills bacteria brushing can miss.