[Metabolites differences between plaque biofilms of children with different levels of dental caries].

Purpose: To explore the differences between plaque biofilms of children with different caries activities via metabolomics.

Methods: A case-control study was conducted to investigate the oral health-related behaviors of children in caries-free (CF), low level of early childhood caries(LECC) and high level of early childhood caries (HECC) groups and to collect supragingival plaque biofilms. Untargeted metabolomics was used to detect the compositions of plaque biofilm metabolites in three groups.