关键词: 低龄儿童龋, 机制, 预防

Abstract: Early childhood caries（ECC）is a relatively common prevalent chronic oral disease in children. ECC not only affects the children′s chewing function，but also adversely affects the permanent teeth，oral and maxillofacial development，and even the whole body health. The pathogenesis of ECC involves many factors，such as eating habits，oral hygiene and bacterial infection. Personalized risk assessment for children at this stage，and targeted preventive measures or early treatment for high -risk factors，which are conducive to controlling the occurrence and development of caries and promoting children′s oral health. This article combines the four-united factors of caries to make a review of the research progress on the mechanism and prevention strategies for ECC.

Key words: early childhood caries, mechanism, prevention