OBJECTIVES: To describe the oral health status of Chinese @entity1 and adults at national level in relation to location and province and to highlight changes in @entity1547 experience. DESIGN: Cross-sectional study, oral epidemiological survey based on WHO methodology, clinical examinations. SETTING: National survey by National Committee for Oral Health. SUBJECTS: Representative samples of provinces, districts, townships; cluster sampling including subjects aged 5,12,15,18, 35-44 and 65-74. Each age group consisted of 23,452 @entity1 , i.e. total of 140,712 individuals. RESULTS: At age 5, 76.6% were affected by @entity1547 and mean dmft was 4.5. Mean DMFT varied from 1.0 in 12-year-olds, 1.4 in 15-year-olds, 1.6 in 18-year-olds, 2.1 in 35-44-year-olds to 12.4 in 65-74-year-olds. In adults, @entity1547 experience was higher in females than in males. The effect of urbanisation on @entity1547 prevalence in @entity1 varied by province and age. Among adolescents and young adults @entity1547 levels were high in urban areas while @entity1547 experience was high for old-age @entity1 of rural areas. At national level, changes in @entity1547 prevalence of 12- and 15-year-olds were small. However, some provinces with extensive oral health programmes (e.g. Love Teeth Day) showed declining @entity1547 experience whereas provinces with limited preventive activities had increasing levels of @entity1547 . For all age groups, @entity548 and calculus were most frequent. Severe periodontal conditions were relatively rare. CONCLUSION: The systematic implementation of preventive oral care and community-oriented health programmes are needed for the continuous promotion of oral health in China.

The second national survey of oral health status of XXXX and adults in China.

@entity1 :: ('9606', 'Species') :: ['participants', 'children', 'people'] @entity1547 :: ('MESH:D003731', 'Disease') :: ['caries', 'dental caries'] @entity548 :: ('MESH:D006470', 'Disease') :: ['gingival bleeding']
@entity1 :: (9606,Species) :: ['children']
