5 for 2800 yen! 10 for 5000 yen! Cutona dental mouthpieces (3-step ver. 2) supervised by a dentist. Features: This product is designed for teeth grinding, teeth alignment, and oral care. Contents: Includes three types of mouthpieces with different hardness levels: soft, regular, and hard, along with a dedicated case. How to use: Gradually get used to each step over about a month to slowly proceed with care. Benefits: Reduces stress on teeth and jaws, and supports comfortable sleep. Cautions: This product is not a medical device and does not treat diseases. If you experience any abnormalities, discontinue use and consult a doctor. Teeth grinding, orthodontics, cosmetic dentistry, teeth alignment