There are significance of incidence rate of tooth-missing and dental prosthesis of different aged, gender, income, culture background in residents.Dentition defect is 91.8%, edentia is 8.2%.

• 不同年龄、不同性别、不同经济收入、不同文化程度居民的牙齿缺失和修复率均有显著差异，其中牙列缺损佔91.；8%25，牙列缺失为8