Abstract
Objective To describe the dental caries status of preschool children in Hong Kong and factors which affect their caries status.
Design 658 preschool children aged 4 to 6 years from six randomly selected kindergartens in Hong Kong were surveyed in December 1997. A questionnaire to investigate possible explanatory variables for caries status was completed by their parents. Dental caries was diagnosed according to the criteria recommended by the World Health Organization (1997).
Result Caries experience as measured by the mean number of decayed, missing and filled primary teeth (dmft) of the 4-, 5-, and 6-year-old children were found to be 0.9, 1.8, and 3.3 respectively. Overall, 61% of the children had a zero dmft score. Children born in Mainland China had a higher mean dmft score (4.6) than those born in Hong Kong (1.4). Statistically significant correlations were found between the children's dental caries status and their oral health practices as well as their socio-economic background. Parents' education level, dental knowledge and attitudes were also associated with the children's dental caries experience.
Conclusion In general, the caries status of Hong Kong Chinese preschool children was similar to that of children in industrialised countries and was better than that of children in the nearby areas. However, special dental programmes should be made available to children from lower socio-economic classes and new immigrants from Mainland China because they are the high risk groups for caries in Hong Kong.
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References
Evans R W, Lo E C M, Lind O P . Changes in dental health status in Hong Kong after 25 years of water fluoridation. Community Dent Health 1987; 4: 383–394.
Lo E C M, Evans R W, Lind O P . Dental caries status and treatment needs of the permanent dentition of 6-12-year-olds in Hong Kong. Community Dent Oral Epidemiol 1990; 18: 9–11.
Chan J C Y, So F H C, Yu F S H . Oral health survey on primary school children in Hong Kong. Hong Kong: Department of Health, 1997.
Wong K K . Report of a dental survey in Hong Kong. Hong Kong: Department of Health, 1968.
Wei S H Y, Holm A K, Tong L S M, Yuen S W H . Dental caries prevalence and related factors in 5-year-old children in Hong Kong. Pediatric Dent 1993; 15: 116–119.
Chan D Y H . Oral health survey for kindergarten children. Hong Kong: Department of Health, 1992.
Wong M C M, Schwarz E, Lo E C M . Patterns of dental caries severity in Chinese kindergarten children. Community Dent Oral Epidemiol 1997; 25: 343–347.
World Health Organisation. Oral health surveys – basic methods. 4th ed. Geneva: World Health Organisation, 1997.
Hinds K, Gregory J R . National diet and nutrition survey: children aged 1Þ to 4Þ years vol. 2: Report of the dental survey. London: HMSO, 1999.
Wright F A C, Deng H, Shi S T . The dental health status of 6-year-old and 12-year-old Beijing school children in 1987. Community Health 1989; 6: 121–130.
Songpaisan Y, Davies G N . Dental caries experience in the Chiangmai/ Lamphun provinces of Thailand. Community Dent Oral Epidemiol 1989; 17: 131–135.
Davenport E S . Caries in the preschool child: aetiology. J Dent 1990; 18: 300–303.
Holm A K . Caries in the preschool child: international trends. J Dent 1990; 18: 291–295.
Burt B A . Trends in caries prevalence in North American children. Int Dent J 1994; 44(Sup 1): 403–413.
Cahen P M, Obry-Musset A M, Grange D, Frank R M . Caries prevalence in 6- to 15-year-old French children based on the 1987 and 1991 national surveys. J Dent Res 1993; 72: 1581–1587.
Pitts N B, Palmer J D . The dental caries experience of 5-year-old children in Great Britain. Surveys coordinated by the British Association for the Study of Community Dentistry in 1993/94. Community Dent Health 1995; 12: 52–58.
Milen A . Caries in deciduous teeth and public dental care in Finland. Proc Finn Dent Soc 1984; 80 (Sup 7-8): 1–49.
Infante P F, Russell A L . An epidemiologic study of dental caries in preschool children in the United States by race and socioeconomic level. J Dent Res 1974; 53: 393–396.
Holm A K . A longitudinal study of dental health in Swedish children aged 3-5 years. Community Dent Oral Epidemiol 1975; 3: 228–236.
Winter G B . Prediction of high caries risk--diet, hygiene and medication. Int Dent J 1988; 38: 227–230.
Holm A K, Blomquist H K, Crossner C G, Grahnen H and Samuelson G . A comparative study of oral health as related to general health, food habits and socioeconomic conditions of 4-year-old Swedish children. Community Dent Oral Epidemiol 1975; 3: 34–39.
Blinkhorn A S . The caries experience and dietary habits of Edinburgh nursery school children. Br Dent J 1982; 152: 227–230.
Evans R W, Lo E C, Darvell B W . Determinants of variation in dental caries experience in primary teeth of Hong Kong children aged 6-8 years. Community Oral Epidemiol 1993; 21: 1–3.
Stecksen Blicks C, Holm A K . Between-meal eating, toothbrushing frequency and dental caries in 4-year-old children in the north of Sweden. Int J Paediatr Dent 1995; 5: 67–72.
Petersen P E . Oral Health Behavior of 6 years old Danish children. Acta Odont Scand 1992; 50: 57–64.
Poulsen V J . Caries risk children in Danish child dental health service: A health sociological and epidemiological evaluation. Copenhagen: Royal Dental College, 1988.
Wang N J . Dental caries and resources spent for dental care among immigrant children and adolescents in Norway. Int Dent J 1996; 46: 86–90.
Grindefjord M, Dahllof G, Modeer T . Caries development in children from 2.5 to 3.5 years of age: a longitudinal study. Caries Res 1995; 29: 449–454.
Neiderud J, Birkhed D, Neiderud A M . Dental health and dietary habits in Greek immigrant children in southern Sweden compared with Swedish and rural Greek children. Swed Dent J 1991; 15: 187–196.
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The authors would like to thank Ms May Wong for her advice in statistical analysis and Ms Alice Kan for her secretarial assistance.
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Chu, C., Fung, D. & Lo, E. Dental caries status of preschool children in Hong Kong. Br Dent J 187, 616–620 (1999). https://doi.org/10.1038/sj.bdj.4800347
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DOI: https://doi.org/10.1038/sj.bdj.4800347
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