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Objective@#To understand the level and current status of oral health knowledge among people aged 35-44 years in Guangdong Province and to provide a reference for oral health education in Guangdong Province.@*Methods@#An equal-sized, stratified, multistage, random sampling design was applied to obtain representative sample groups consisting of 288 Guangdong residents aged 35-44 years in four urban areas and four rural areas with a gender ratio of one to one. According to the Guideline of the 4th National Oral Health Survey, a questionnaire survey was conducted, and a statistical analysis of the questionnaire responses related to oral health knowledge was performed.@*Results@#In total, 288 people participated in the survey, of which 95.8 percent were aware that “Oral health is very important to their own lives, and the prevention of oral diseases depends on themselves first”, 76.0% recognized that “Regular oral examination is very necessary”, and 66.7% disagreed that “Teeth were innate and had little to do with their own protection”. The percentages of participants that agreed with the statements “Eating sugar can cause dental caries”, “Oral disease may affect general health”, “Bacteria may cause dental caries” and “Bacteria may cause gum inflammation” were 87.2%, 84.7%, 80.9%, and 80.2%, respectively. However, the rates of awareness that teeth could be protected by fluoride and by pit and fissure sealant were only 36.8% and 18.8%, respectively.@*Conclusion@#General knowledge of oral health care was relatively high among adults aged 35-44 years in Guangdong Province, but knowledge of fluoride, pit and fissure sealing and caries prevention was relatively low. Oral health education should be continuously improved, especially regarding the popularization of oral health knowledge.
ABSTRACT
Objective@# Assessing the effect of pit and fissure sealing on children’mandibular first molar in four years follow-up.@*Methods@#The second grade pupils of five primary schools in Guangzhou were given pit and fissure sealing, 733 teeth were performed pit and fissure sealant. The retention rate of the sealant and caries incidence of the mandibular first molar were analysed in four years follow-up. @*Results @# In four years follow-up, the retention rate of mandibular first molar was 57.16%. In terms of the caries incidence, the sealing group was 9.82%, while the unsealing group was 15.77%(χ2 = 7.045, P < 0.05). The decrease rate of caries in the sealing group was 37.73%, the caries incidence for the shallow pit and fissure group was 7.76%, no statistical differentce could be found two groups (χ2 = 0.844,P = 0.358).@*Conclusion@#Caries incidence of mandibular first molar obviously decreased 4 years later after the pit and fissure sealing.
ABSTRACT
Objective @# To know the influencing factors of dental caries in first permanent molars among children aged 10-12 years old in Guangzhou, and to give references for dental caries prevention.@*Methods @#The samples were selected by stratified random sampling method. Oral health examination and questionnaires were applied to all the 18 656 children who were 5 or 6-grade in 149 primary schools. @*Results @#The prevalence of dental caries in first permanent molars was 18.19%. Girls accouted for 19.96%, which was significantly higher than that of boys (16.71%) (χ2 = 32.817, P< 0.001). Multiple regression analyses were used to investigate the influencing factors of dental caries in first permanent molars. After controlling school cluster and other factors, household register, gender, pit and fissure sealant, consumption of sweets and chocolates, consumption of sweet milk were influencing factors of permanent teeth caries. And household register, gender, pit and fissure sealant, consumption of sweets and chocolates were associated with mean DMFT.@*Conclusion @#school oral health education should focus on the consumption of sugars and cares should be put into the differences between urban and rural area. In addition, strengthening publicity of the sealant retention project,raising public awareness, and improving sealant retention quality are necessary to ensure the anti-caries effect.