Oral health status in preschool asthmatic children in Iran.

Asthma is a chronic inflammatory disorder of the airways, which is diagnosed by periodic symptoms of inflammation, bronchial spasm, and increased mucosal secretions. It has higher incidence among the preschool children. There are many contradictory reports based on the effect of asthma on oral health, however it has been hypothesized that asthma could lead to poor oral health. The objective of the present study was to investigate oral health indices in 44 preschool children of three to six years old with mild to moderate asthma and 46 matched healthy children in Tehran Children's Respiratory Center. Dental plaque, gingival inflammation, mouth breathing, and dental caries were evaluated by one trained examiner according to World Health Organization [WHO] criteria. Culture and colony counting of streptococcus mutans and lactobacillus species were carried out in saliva specimens of the patients. The effects of different factors on the colony counts were statistically analyzed using linear regression analysis. The level of mother's education and preexisting asthma disease in children had significant effect on the colony counts of streptococcus species whereas no factor was found to influence the number of lactobacillus counts significantly. The results indicated no significant differences between the children with asthma and those without asthma regarding (decayed, missing, filled, teeth) dmft index (mean of 3.34 in asthmatic children and 3.0 in the control group). Therefore, it can be deduced that the presence of asthma disease did not increase the probability of tooth decay.