Molar grinder is an instrument used to relieve bruxism, which can reduce the tension of mandibular muscles, thus reducing the occurrence of molars. When using the grinding machine, you should choose the mode that suits you and adjust the water temperature. In addition, the correct use methods include: don't eat lying down, sit down and have adults watching; Don't eat broken grinding rods; Choose a mild grinding rod; Choose a grinding rod with appropriate length.