Correlation of the Apgar Score with Dental Caries in 3- to 5-year-old Iranian Children.

Background: Dental caries is a serious health condition in children. Poor diet, poor oral hygiene, and unique anatomy of the primary teeth can all contribute to the development of caries in primary teeth. Developmental structural defects in teeth during the fetal period and the first year after birth are believed to increase caries susceptibility. This study aimed to assess the correlation of the Apgar score with dental caries in 3- to 5-year-old Iranian children.

Methods: This retrospective, descriptive, cross-sectional study was conducted at the Pediatric Dental Clinic of Tehran Dental School in 2022. A total of 123 eligible children between 3-5 years were enrolled. The parents were requested to fill out a checklist regarding the information of demographics, birth and infancy condition and Apgar score of children. The children underwent clinical dental examination, and their dmft was recorded. Data were analyzed by the Pearson and regression tests. P values < 0.1 were considered statistically significant.

Results: The Pearson test showed that the 1-minute (P = 0.000) and 5-minute (P = 0.000) Apgar scores had a significant correlation with dmft. The regression analysis of demographic and birth factors revealed significant correlations between duration of breastfeeding (P = 0.066) and age of initiation of toothbrushing (P = 0.019) with dmft. Also, birth weight (P = 0.026) and mother's educational level (P = 0.090) had significant correlations with the Apgar score.

Conclusion: The results indicated a significant correlation between the Apgar score and dental caries. Thus, newborns with lower Apgar scores are recommended to receive more regular oral and dental care services.