关键词: 替牙期, 牙齿健康, 儿童

Abstract: Objective To understand the current situation of children's oral replacement period,common dental health problems and influencing factors,and parents' knowledge of children's dental health,so as to provide basis for scientific maintenance of children's oral health. Methods A cross-sectional study was performed to select 1 023 children aged 4 to 7 years as participants in Qiqihar from January to May in 2019 by a stratified cluster sampling method. Common oral health problem and the influencing factors were investigated. Results A total of 435(42.52%) children were in the teeth replacement period in this survey. And 875 children took oral examination,founding that 266(30.4%) had dental caries. Logistic regression analysis showed that high frequency of drinks such as intake of juice(OR=2.254,95%CI:1.185—2.289,P＜0.05),often snacking before bed (OR=2.515,95%CI:1.437—4.403,P＜0.05) and no oral care after eating (OR=2.490,95%CI:1.412—4.390,P＜0.05) were the influencing factors of dental caries. Eating candy≥3 times/d(OR=3.924,95%CI:1.264—12.184,P＜0.05) and dessert for 1-2 times/d(OR=3.378,95%CI:1.219—9.361,P＜0.05) may be risk factors for children to enter teething earlier. Conclusions Some children's dental replacement period is earlier. Family factors,eating habits and lifestyle are the factors influencing children's dental health. Thus,parents are supposed to improve the understanding of children's oral health in order to protect children's oral health scientifically and reasonably.

Key words: dental replacement period, oral health, children