[A national survey on dentin hypersensitivity in Chinese urban adults].

Objective: To investigate the prevalence of dentin hypersensitivity in Chinese urban adults aged between 20 - 69 years old and the factors related to dentin hypersensitivity.

Methods: The Chinese national survey on dentin hypersensitivity was conducted in 20 - 69 years old adults in six representative cities, Beijing, Shanghai, Guangzhou, Wuhan, Chengdu, and Xi'an in 2008. A multi-stage stratified randomizing sampling method was used.

[A study of oral health behaviors among 65 to 74 years old people in Shanxi province].

Purpose: To assess the oral health behaviors among 65 to 74 years old people in Shanxi province, and provide a base line for oral health service.

Methods: Four hundred and five old people aged from 65 to 74 in Shaanxi province was selected according to the Third National Oral Health Investigation Criteria and the oral health behaviors of them were investigated by questionnaire. SPSS 13.

Dental fluorosis in children in areas with fluoride-polluted air, high-fluoride water, and low-fluoride water as well as low-fluoride air: a study of deciduous and permanent teeth in the Shaanxi province, China.

Objective: The aim of the study was to assess dental fluorosis (DF) in the deciduous and permanent teeth of children in areas with high-F coal (area A) and high-F water (area C) compared to children from area B, with low-F water and coal.

Material And Methods: 596 children were examined. DF was assessed by TF-score.

Dental fluorosis and dental caries in permanent teeth: rural schoolchildren in high-fluoride areas in the Shaanxi province, China.

Objectives: To study the dental fluorosis and caries in the permanent teeth of 12 to 13-year-old children in fluorosis-endemic areas; to assess the relationship between fluorosis and the fluoride content of the drinking water and the relationship between caries and the fluoride content of the water; finally, to analyze the effect of fluoride intake and water stored in clay pots on dental fluorosis.

Material And Methods: 477 children were divided into 5 groups (A to E) according to the fluoride concentration of the waters, i.e.

[Effect of drinking water change upon the dental fluorosis].

Objective: To assess changes in prevalence and degree of dental fluorosis in individuals born before and after the introduction of water with 1.2 mg/L fluoride instead of water with 2.0-10.