Objective: This study aimed to test the reliability of food consumption frequency questionnaire and to determine the status of dental caries as well as the relationships of food consumption frequency with dental caries status in adolescents aged 15 – 16 years old in Jakarta.

Method: 471 adolescents randomly selected from 11 high schools in Jakarta was involved in this study. Clinical examination was performed by single examiner using DMFT index. Food Frequency Questionnaire (FFQ) by Pieper undergone forward-backward translation to Indonesian version was self-administered.

Result: Dental caries prevalence in this population was 75.4% with mean DMFT 2.72. The reliability test of FFQ resulting in ICC=0.940. Carbonated drinks and chips’ consumption frequency have significant relationship with dental caries status (p=0.031 and p=0.012)

Conclusion: The FFQ used in this study is a reliable tool to obtain data of food consumption frequency. The dental caries status of adolescents in Jakarta is considered moderate based on WHO classification. Only two types of foods in this study which have significant relationships between food consumption frequency and dental caries status in adolescents.