| Summary: | Objective: Several studies have reported that low levels of vitamin D (25(OH)D) are associated with an increased risk of dental caries and that optimal levels may offer protection. This study aimed to assess the relationship between serum and saliva 25(OH)D levels and caries among young children. Study design: A total of 120 healthy children were recruited; 93 with caries and 27 caries-free. Dental caries status was evaluated using decayed, missing and filled in primary teeth (dmft) index. Blood and unstimulated whole saliva samples were collected. Laboratory analysis was performed using Enzyme-Linked Immunosorbent Assay Kit. Data were analyzed with descriptive statistics, bivariate and Spearman’s rank correlation analysis. Results: There were no significant associations between serum and saliva 25(OH)D levels and caries status (P > 0.05). Levels of 25(OH)D in serum were significantly higher than levels found in saliva (P < 0.05), and a correlation between serum and saliva 25(OH)D levels was observed (P < 0.05). Conclusions: The association between serum and saliva 25(OH)D and dental caries in young children was inconclusive. However, a positive and significant correlation was observed between serum and saliva 25(OH)D levels. Further studies are warranted to investigate the definite relation between 25(OH)D levels and dental caries and using saliva 25(OH)D as a non-invasive alternative method over blood samples. © 2021, MRE Press. All rights reserved.
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