Abstract: Objective: To study the intervention effect of cement caries in the elders of Yitian community in Shenzhen, Futian District. Methods: From January 2013 to January 2015, 100 elders with aged 65 in Yitian community of Futian district were randomly divided into intervention group (n=50) and the control group (n=50). A baseline survey was conducted to understand the root caries in older adults and to assess the risk during the process of social health center physical examination for 65-year-old or older each year. The intervention group was given comprehensive intervention with health education combined with the glass ion diaphragm, while the control group received no intervention. The effect of root caries prevention in two groups after 18 months' followed up was observed. Results: The main factors affecting the incidence of root caries in the elderly were the factors such as eating sweets, brushing teeth before going to bed and brushing frequency, the success rate of root surface caries prevention in the elderly of intervention group (92.0%) was significantly higher than that of control group (64.0%), which was significant statistical difference (P<0.05). Conclusion: Health education combined root surface coated glass ion diaphragm intervention can effectively improve the community elderly root caries prevention effect. For the influence factors of root surface caries in the elderly, the elderly should be instructed to pay attention to the improvement of daily habits, strengthened health education guidance, and taken root surface coated glass ion coating protective measures at the same time, with aim to maximally reduce the incidence of senile cement caries.

Key words: Cement caries , The elderly, Health education , Glass ion diaphragm