Z3® Tartar and Stain Tablets, once dissolved, are the most convenient and safe way to clean dentures, bridges and appliances. This patented technology gives you a highly concentrated. Z3® Tartar and Stain remover that is safe and effortless to use. There is no mixing or measuring—just add 1 tablet to 5 oz (148mL) of water and your solution is made for the day Effervescent ultrasonic cleaner.