|nr = not reported. = association not found. = association found. |
63% Caucasian; 22% Asian; 15% Afro-Caribean.
Cases diagnosed as adult periodontitis.
Cases diagnosed as mixed periodontitis status.
An association with periodontitis was found for combined genotype: carriage of R-allele for IL1A 889, IL-1B +3954, and IL1RN in a subgroup of patients being nonsmokers, and at the same time culture negative for P. gingivalis and A. actinomycetemcomitans.