Complete dentures Edentulous jaws There are not any natural tooth and root of tooth on the dental arch Complete dentures is mucosa support denture.character1、Caries 2、periodontal disease3、General disease、injuryCause of disease1、cariesCause of disease2、periodontal diseaseCause of disease3、trauma and tumor Cyst of jawsCause of disease1.Old people is more than the other people2.Woman man3.maxilla mandibleSpongy substance of bonescortex of boneDisease incidence1. patients face、chewing function，and h
