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Assessment of Salivary Secretory Immunoglobulin A (sIg A) Level during Fixed Orthodontic Treatment

Author: Shaymaa Sh. Taha شيماء شاكر طه
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2016 Volume: 28 Issue: 3 Pages: 149-154
Publisher: Baghdad University جامعة بغداد


Background: The immune system of the oral cavity suffers alterations due to fixed orthodontic treatment which act aspotent stimulus for oral secretory immunity. The aims of this study are to estimate the effect of fixed orthodonticappliance on the level of salivary sIgA at different time intervals, and to verify the gender difference.Materials and method: The patient's history, clinical examination, and fixed orthodontic appliances were placed for30 Iraqi orthodontic adult patients had class II division 1 and/ or class I malocclusion (15 males and 15 females) aged18-25 years old. The unstimulated whole saliva was collected from each sample immediately before wearing fixedappliance (control group T0 as base line), and after 2 weeks (T1),1 month (T2), and 1year (T3) of wearing fixedorthodontic appliance. The levels of salivary sIgA were measured by Enzyme Linked Immunosorbant Assay kit (ELISA).Results: The mean value of salivary sIgA was elevated at T1 and reached the peak at T2 followed by declined at T3to reach near the normal value at T0 (base line). Repeated measure ANOVA test showed statistically highlysignificant difference among four time intervals. The Bonferroni test after repeated measure ANOVA test showedhighly statistical significant difference between each two time intervals except between T0 and T3 show significantdifference. In addition there were no significant gender differences.Conclusion: In this study one can conclude that fixed orthodontic appliance acts as an immunological stimulant inthe oral cavity that changes the level of salivary sIgA which evaluate the immunity status in the oral cavity

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