Abstract
The periodontal index (PI), the number of decayed, missing and filled teeth (DMF), fluid flow rates of stimulated parotid secretions, and parotid IgA concentrations were recorded in 27 young males. Values for the parotid IgA secretion rates were calculated from IgA concentrations and fluid flow rates. Variations in IgA secretion rates were found between different individuals; these were independent of fluid flow rate and thus reflected true differences in glandular IgA output. A statistically significant, negative correlation was found between the DMF score and IgA secretion rate. Conversely, the PI score tended to be positively correlated with the concentration and secretion rate of parotid IgA. It is suggested that the simultaneous presence of both diseases may obscure the basic relationship of parotid IgA with either disease.
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