Abstract:

Objective    Through the analysis of epidemic situation of dental caries in preschool children aged 3-5 years in Baotou city，to discuss the relationship between caries situation and the degree of dental caries activity. Methods    Totally 379 children（male 196，female 183）were selected in 5 kindergartens for dental caries examination with random choice. The dental caries rate，decayed or filled teeth（dft）and caries severity index（CSI）were calculated. Caries activity（CAT） was measured by caries activity test. Results    The caries rates，dental filling teeth（dft）and caries severity index（CSI）respectively were 56.20%，3.82 and 10.11 in 3-5 years old children in Baotou city. There was no statistically significant difference between male and female（P > 0.05）. The incidence of caries，dft and CSI had no statistically significant difference in all age groups（P < 0.05）. There was no difference in dft and CSI when CAT were at the degree from 0 to 1and from 2 to 3 when each two groups were compared（P > 0.05）. Others had statistically significant difference（P < 0.05）. CAT was positively correlated with dft and CSI at each degree（r = 0.394 and 0.363，P < 0.05）. Conclusion    Caries activity test can reflect the degree of decay effectively and accurately. It is important to screen for high-risk caries patients in children. Reasonable prevention and treatment measures should be developed in response to the caries situation in school-aged children in Baotou city，in order to lay a solid foundation for preventing caries in children.

Key words: caries, preschoolers, caries activity

摘要：

目的    通过对包头市3 ~ 5岁学龄前儿童龋病流行现状分析，探讨患龋情况、龋蚀程度与龋病活跃性的关系。方法    于2015年10月至2016年1月选取包头市5所幼儿园中的379名儿童（男196名、女183名）进行口腔卫生检查，计算患龋率、龋补牙数（dft）、龋蚀严重指数（CSI），并应用龋活跃性试验检测龋活跃度（CAT）。结果          包头市3 ~ 5岁儿童患龋率、乳牙龋补牙数（dft）和龋蚀严重指数（CSI）分别为56.20%、3.82和10.11；男女之间的患龋率、dft、CSI差异无统计学意义（P > 0.05）；各年龄组间患龋率、dft、CSI差异有统计学意义（P < 0.05）；经两两比较CAT在0 ~ 1度、2 ~ 3度间dft和CSI差异无统计学意义（P > 0.05），其余差异均有统计学意义（P < 0.05）；CAT各度与dft、CSI呈正相关关系（r = 0.394和0.363，均P < 0.05）。结论    龋活跃性试验能够有效准确地反映龋蚀程度，对筛选高危患龋风险儿童具有重要临床意义；针对包头市学龄前儿童患龋情况，应制定合理的预防诊疗措施，因地制宜为儿童口腔健康奠定坚实基础。

关键词: 龋病, 学龄前儿童, 龋活跃性