Association Between Salivary Carbonic Anhydrase 6 Levels and Early Childhood Caries in Children With Chronic Bronchial Asthma
Abstract Background and Aim: The aim of this study was to compare the level of a salivary marker (carbonic anhydrase 6 isoenzyme (CA6)) between children with and without bronchial asthma (BA) with dental caries to age and gender-matched non-asthmatic children with a similar caries profile. Materials and Methods: Saliva samples were collected from 80 children aged 6 to 8 years.The children were divided into four groups according to the presence of BA and caries: 1) high caries, presence of BA, 2) absence of caries, presence of BA, 3) high caries, absence of BA , 4) absence of caries, absence of BA . Differences in CA6 were compared among the groups using a One-Way ANOVA and Scheffe’s post hoc test. Separate regression models were developed to evaluate the impact of oral hygiene, dental caries and salivary pH on CA6 levels in children with and without BA. Results: Children with dental caries had a significantly higher CA6 level than their caries free healthy controls. Children with BA and dental caries had a significantly lower CA6 level than their caries free counterparts. The linear regression model showed dental caries had a significant inverse association with CA6 expression in children with BA but not in healthy children.Conclusion: CA6 may serve as a protective mechanism against dental caries in children with bronchial asthma.