Correlation between Streptococci Mutans and salivary IgA in relation to some oral parameters in saliva of children
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Abstract
The aim of this study was to investigate the relationship between salivary Streptococcus Mutans (SM) count and S IgA in stimulated whole saliva in children with primary dentition compared to those with permanent teeth in relation to some oral hygiene parameters.
Material and methods: Stimulated whole saliva was collected from 50 children (25 with primary dentation and 25 with permanent teeth). Salivary flow rate and pH was measured. Oral hygiene index (OHI) and gingival inflammation was assessed using classical method. S IgA level was measured using an immunoassay kit and SM count was determined by culture media.
Results: Mean salivary flow rate, pH and S IgA were significantly higher among children with permanent teeth compared to those with primary dentition.
Compared to primary dentition, permanent dentition was associated with a significantly reduced mean plaque index, increased mean gingival index and reduced mean salivary SM count.
Although plaque index showed a statistically significant positive correlation with SM count, gingival index showed a weak negative correlation with bacterial count.
S IgA, PH and flow rate showed a statistically significant moderately strong negative correlation with bacterial count.
Conclusion: This study showed a clear correlation between count of SM in stimulated whole saliva and both SIgA and plaque index.
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