Journal of Prevention and Treatment for Stomatological Diseases ›› 2020, Vol. 28 ›› Issue (5): 273-278.doi: 10.12016/j.issn.2096-1456.2020.05.001

• Expert Forum • Previous Articles     Next Articles

The prevalence of dental caries in urban areas is lower than that in rural areas--analysis of changes in the epidemiological characteristics of caries in urban and rural areas

HUANG Shaohong(),WU Linmei   

  1. Stomatological Hospital, Southern Medical University, Guangzhou 510280, China.
  • Received:2019-11-25 Revised:2020-02-19 Online:2020-05-20 Published:2020-04-24
  • Contact: Shaohong HUANG E-mail:hsh.china@tom.com

Abstract:

As one of the most common chronic diseases of the oral cavity, caries gradually accumulate over the lifetime and affect approximately 80% of the world population. The epidemiological characteristics of the disease are specific in terms of regional distribution, temporal distribution and population distribution. Caries prevalence and mean decayed, missing and filled permanent teeth (mean DMFT) scores are the most commonly used indexes in oral epidemiology. Caries prevalence is used to describe the frequency of caries over a certain period of time. In addition, DMFT scores reflect the severity of caries in the population. The caries prevalence and the severity of caries are assessed as part of a dynamic process. In developing countries, caries prevalence is higher among urban populations than among rural populations. Currently, the epidemic characteristics of caries in urban and rural areas are changing, and the caries prevalence of urban residents is lower than that of rural residents. This article is a chronological review of the Oral Health Epidemiological Surveys of China from 1983 to 2015, the Preventive Dentistry study and other related studies. It is concluded that the epidemic characteristics of caries in urban and rural areas in China have changed from a higher caries prevalence in urban areas compared to that in rural areas to a lower caries prevalence in urban areas compared to that in rural areas. Several factors, such as the dynamic development of differences in dietary habits, economic levels and access to oral medical resources of urban and rural residents might have led to changes in caries prevalence in urban and rural areas. The caries prevalence of rural residents has increased greatly, which indicates that the caries prevention efforts of the relevant departments should be focused more on rural areas in the future.

Key words: dental caries, mean DMFT, caries prevalence, oral epidemiology, survey, prevention, urban, rural, China

CLC Number: 

  • R780.1

Figure 1

Permanent teeth caries prevalence among the 12-year-old population in urban and rural areas from 1983 to 2015 in China"

Figure 2

Permanent teeth mean DMFT among the 12-year-old population in urban and rural areas from 1983 to 2015 in China"

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