Dentures are easy to cause adverse effects or harm to the body at night, such as denture stomatitis, aggravate the burden of the abutment teeth and accidental swallowing of dentures and so on. 1. Denture stomatitis: refers to the wearing of dentures after contact with the gum mucosa is prone to inflammation, mucosal redness and swelling, often accompanied by dry mouth, oral pain and other symptoms. 2. Burden of abutment teeth: dentures have been hanging on abutment teeth during the day, when dentures are under force, the force will be transmitted downward to the abutment teeth, resulting in a certain burden, and removing dentures at night can let the abutment teeth get enough rest to avoid aggravating the burden. 3. Accidental swallowing of dentures: If dentures are not removed before going to bed at night, there is a possibility that individual dentures may fall out and be swallowed accidentally, resulting in tracheal blockage, and in severe cases, there is a risk of asphyxiation. Patients using dentures should also pay attention to keep the dentures hygiene and cleanliness, light wear and light removal, while regularly to the hospital for follow-up, after a long period of time need to re-formulate the dentures.