Abstract：Objective To explore the influence factors and controlling measure of saprodontia in preschoolers. Methods Totally 785 preschoolers were selected with cluster sampling method, and information on children and their family was recorded by self-control questionnaire scale. The influence factors were analyzed by SPSS 20.0, and both protective factors and risk factors were established by logistic regression. Results There were 737 valid questionnaire scales in all, and the recovery rate was 93.9%, with the saprodontia rate 38.5% and the saprodontia average 2.53. Children age, birth body mass, gestation length, feeding patterns, sweetmeat and beverages frequency, brush teeth age, brush teeth frequency, oral inflammation during pregnancy, gestational diabetes mellitus, calcium supplement during pregnancy, parent saprodontia and whether to do children's oral examination regularly were all influence factors of saprodontia (P<0.05). The aged five and above, low birth weight infant, frequent sweetmeat, brushing frequency less than one time a day, oral inflammation during pregnancy and parent saprodontia were risk factors for children saprodontia (P<0.05). And breast feeding, calcium supplement in gestation period and do children′s oral examination regularly were all protection factors for children saprodontia (P<0.05). Conclusion Children have high caries rate, and increasing health promotion and improving the nursing care awareness of parents is one of the effective means to control children's dental caries.
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