When wearing a complete denture for the first time, you must first build up the confidence in using the denture, and try to practice using the denture in your mouth. When wearing dentures for the first time, there will be a foreign body sensation, even inability to swallow saliva, nausea and vomiting, and unclear pronunciation. These must be mentally prepared before wearing them; secondly, correct the protruding or lateral mandible caused by long-term missing teeth Chewing habits; with regard to eating problems, it is not advisable to wear dentures to chew food too early. A few days before the first wearing, you should practice wearing dentures to do median bite and pronunciation. After you get used to it, use your dentures to chew food. Start to eat small pieces of soft food first. The chewing action should be slow. Use the back teeth on both sides to chew food. After a period of exercise, gradually eat normal food. In addition, dentures should be removed after meals, rinsed with cold water or brushed with a toothbrush before putting them on, so as to prevent food residues from accumulating on the tissue surface of the dentures, irritating the oral mucosa and affecting tissue health. Also apply a soft brush to the upper palate and lingual face. When sleeping, the dentures should be removed and soaked in cold water, so that the tissues in the edentulous jaw support area can get a proper rest, which is beneficial to the health of the tissues. Dentures should be brushed thoroughly with toothpaste at least once a day, preferably after every meal. Special care should be taken when brushing, so as not to fall on the ground and break.