Bad breath, dry mouth or bad odor complaints are not directly related to zirconium dental crowns. These undesirable situations occur only in case of poor oral hygiene. Inadequate brushing and lack of oral care practices can cause tartar accumulation and gum diseases over time. The accumulation of tartar will indirectly affect the zirconium dental crowns and this will cause more food residues or bacteria accumulation around the teeth. Zirconium teeth do not cause bad breath in individuals who regularly brush, floss and use an interdental brush.