Core Viewpoint - Dental caries is a common oral disease affecting children's health and development, with a high prevalence rate of 45% among primary school students in Wenhui District, Weihai City, highlighting the need for effective preventive measures [1] Group 1: Prevalence and Impact - The prevalence of dental caries among primary school students in Wenhui District is reported to be 45%, with over 80% of cases attributed to fissure caries in permanent molars, posing a significant health threat to children and adolescents [1] Group 2: Preventive Measures - The fissure sealing technique is recognized as the most scientific method for preventing dental caries, and since 2019, Wenhui District has implemented a comprehensive dental caries prevention and treatment project for children [1] - The Wenhui District Dental Hospital serves as the designated medical institution for this project, providing free fissure sealing for first permanent molars to second-grade students across the district [1] Group 3: Implementation and Results - As of this year, the project has reached 9 primary schools, completing fissure sealing treatment for nearly 700 eligible children, with the work now in the final stages [1] - The fissure sealing process is conducted in stages: sealing of primary molars at ages 3-4, first permanent molars at ages 6-8, and second permanent molars at ages 11-13, primarily focusing on the first permanent molars [1] - The technique involves applying a protective agent on the tooth surface to create a barrier, which is non-invasive, painless, and does not damage tooth structure, resulting in high acceptance among children [1]