Association between Dental Caries and Passive Smoking and Its Related Factors in Children Aged 3–9 Years Old

AIMS: Dental caries is the most common chronic and infectious childhood disease. Several studies have investigated the side effects of cigarette smoke on oral health. Caries appear to be higher in children exposed to environmental cigarette smoke, but this relationship has not yet been established. The purpose of this study was to investigate the relationship between dental caries and passive smoker children aged 3–9 years old. MATERIALS AND METHODS: This descriptive analytical study was performed on 75 children aged from 3 to 9 years. The study included two groups (first group: control, second group: passive smoker). Demographic data, frequency of toothbrushing and using toothpaste, sugar consumption, and number of dental visits were recorded in a questionnaire. Then, the children were examined, and dmft and DMFT index and plaque index were recorded. Children’s saliva was then collected and sent to the laboratory for determination of cotinine levels. Then, the relationship between passive smoker and caries index and other factors were statistically analyzed. RESULTS: Studying dmft and DMFT, it was found that except for component M (Missing) which was zero in both groups, the other components of these two indices were significantly higher in the group exposed to passive smoker. Plaque index and salivary cotinine level were also significantly different in the two groups and were lower in the control group. CONCLUSION: According to the results of this study, children exposed to passive smoker have a higher rate of caries than other children. It seems that it is primarily due to its effect on increasing plaque accumulation and then the effect of passive smoker on the physiological structures of the mouth and so on. CLINICAL SIGNIFICANCE: We can perform preventive care for children if we know that passive smoking may cause more dental caries. HOW TO CITE THIS ARTICLE: Mosharrafian S, Lohoni S, Mokhtari S. Association between Dental Caries and Passive Smoking and Its Related Factors in Children Aged 3–9 Years Old. Int J Clin Pediatr Dent 2020;13(6):600–605.