Crest Cavity Protection Toothpaste. Keep your mouth clean and healthy with this Crest Cavity Protection Toothpaste. It freshens breath and leaves a crisp feeling of baking soda and peroxide. With clinically proven flouristat, it fights tartar and prevents cavities by strengthening weak spots. It comes in a handy 6.4 oz tube making it ideal for traveling or use at home. This Crest cavity toothpaste pack of 3. It whitens teeth to give you a more confident smile.