[Serum's immunoglobulins in dental caries with or not dental alloy]

In 51 individuals with dental caries (mean age +/- SE, 30, 12 +/- 1, 43) were determined the serum's immunoglobulins IgA, IgG, IgM and the ration IgG/IgA. The levels of them were compared with the levels of immunoglobulins of 53 individuals (mean age +/- SE 36, 78 +/- 1, 86) with no significant difference (p greater than 0.1). Also, no significant difference (p greater than 0.1) was observed between the levels of immunoglobulins of the two subgroups, one with dental caries only (n = 32) and another with dental caries and alloy (n = 19). When in the two subgroups was taken care the dental caries degree the mean levels of the above parameters were differenciated. The mean level of IgG was significant lower in the subgroup with high caries degree without alloy (p less than 0.01) comparing with low caries degree. This difference was not observed between the subgroups where there was dental alloy. Also lower mean level of IgA was observed in the subgroup with high caries experience without prosthesis in contrast with the subgroup where there was dental alloy where the mean level of IgA was higher comparing these with the corresponding comparing subgroups. These differences were not significant (p greater than 0.1). The charge of the IgG/IgA ration was similarly lower in the subgroup with or without dental alloy. Also no significant was found between the levels of IgA, IgG, IgM, in relation to preexisting dental alloy or not. Our results show that the levels of IgA, IgG, IgM, can be affected not only of the dental caries degree but also of the preexisting dental alloy.