Mackert J R, Leffell M S, Wagner D A, Powell B J
Department of Restorative Dentistry, School of Dentistry, Medical College of Georgia, Augusta 30912-1254.
J Am Dent Assoc. 1991 Mar;122(3):49-53. doi: 10.14219/jada.archive.1991.0095.
The claim that mercury from dental amalgam produces "reduced immunocompetence" was examined by measuring the levels of the three major populations of lymphocytes on 37 subjects--21 with amalgam restorations and 16 without. The results of this study show no indication that amalgam restorations affect the human immune system nor do they support the "reduced immunocompetence" claim.