假牙（义齿）有活动的和固定的两种。一般牙齿缺失颗数少，前后有健康邻牙时，适宜镶固定假牙。固定假牙镶配后，坚固舒适，一般没有异物感，也不需（不能）取下清洗，可与对待健牙一样刷牙、漱口。如果缺失牙齿较多，则必须镶活动假牙。活动假牙可以是单颗的、多颗的，也可以 Dentures (dentures) are active and fixed in both. The number of missing teeth in general, before and after the health of adjacent teeth, suitable for setting fixed denture. After the fixed dentures are fitted, they are firm and comfortable, generally do not have the foreign body sensation, and do not need (can not be removed) for cleaning. They can brush their teeth and gargle like the healthy teeth. If there are more missing teeth, the denture must be inserted. Activities dentures can be single, multiple, it can be