Dental health checkups of children were conducted in Tianjin, China (central and suburban areas of the city). The prevalence of dental disease in Tianjin was compared with that in Japan as reported in a 1999 survey report. The following results were obtained. 1. There was no marked difference in the prevalence of dental disease between central and suburban areas of Tianjin. 2. The caries incidence ratio and the average number of decayed teeth per child were significantly higher in Tianjin than in Japan, but the treated teeth rate was significantly lower in Tianjin than in Japan. This indicates that the treatment of dental caries is not sufficient in China. 3. Dental caries tended to be more severe among Japanese than Chinese children. As the economy develops and living conditions change in China, dental caries may become more prevalent there, coming to resemble Japan's present condition. Follow-up sur-veys are needed.
The Prevalence of Dental Disease in the Children of Tianjin, China : Comparison of Tianjin (central and suburban areas) with Japan
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