[Pit and fissure sealant for caries prevention in 457 children in Uygur city: results of 2-year follow-up].

PURPOSE: To investigate the 2-year results of pit and fissure sealant in 457 children in Uygur city for caries prevention in the first permanent molars. METHODS: One thousand four hundred and ninety-nine newly erupted first permanent molars in 457 children between the ages of 7 and 9 in Uygur city underwent pit and fissure sealing using 3M Concisse sealant. The retention of sealants 6, 12 and 24 months after sealing was observed and the caries occurrence were recorded. The data was analyzed with SPSS 16.0 software package. RESULTS: The retention rate of pit and fissure sealant 6, 12 and 24 months after sealing was 98.33%, 92.71% and 88.93%, respectively. The frequency of dental caries was 0%, 0.63% and 1.15% respectively, which were significantly reduced compared with the average prevalence in China (P<0.05). CONCLUSIONS: Pit and fissure sealant is safe and effective in preventing dental decay in first permanent molar in Uygur children, which is worthy of wide clinical application. Supported by Comprehensive Intervention Pilot Project for Pediatric Oral Diseases in Middle and Western Area of China in 2010.

[A cross-sectional study on the current status of female infertility in three counties of Xinjiang Uygur Autonomous Region].

OBJECTIVE: To explore the distribution and factors associated with female infertility in 3 areas in Xinjiang Uygur Autonomous Region so as to provide rationales for the prevention, diagnosis and treatment of infertility. METHODS: A total of 1895 women of reproductive age were enrolled with a cluster random stratified sampling method. A questionnaire survey and pelvic examinations were conducted. The collected data were statistically analyzed. RESULTS: The prevalence of infertility in these three areas ranged from 7.5% (76/1014) to 26.2% (144/550) with an average of 15.2% (279/1835). The prevalence of infertility was the highest in Shan shan and it was related with its unique geographical environment and life style. The lower levels of education and income, the higher prevalence of infertility. The occurrence of infertility was also correlated with their residence, premarital sex, body mass index and some concurrent diseases. CONCLUSION: It is necessary to carry out further studies on healthful life styles and those factors associated with the morbidity of infertility. The prevalence of infertility may be reduced and local reproductive health improved by avoiding or reducing the adolescent premarital sex and unmarried abortion.