Evaluation of lymphocyte populations and subpopulations extracted from inflamed periodontal tissues.

The aim of the present study was evaluation the distribution of B- and T-cells and T-cell subsets in periodontal tissues from patients with different periodontitis forms. Periodontal tissue samples were collected from group P patients during routine surgical procedures, while from group C during tooth extraction for orthodontic or prosthetic purposes. Directly after collection, tissue samples were placed in a criostat or fixed in 10% buffered formalin for 24 h at room temperature. Following fixation the material was embedded in paraffin and subjected to routine histological techniques. Examinations of B- and T-lymphocytes populations and T-lymphocytes subsets were made with the use of immunohistochemical method. In C group single T and B lymphocytes were found in histological examination in pocket epithelium zones. In early onset periodontitis (EOP) patients in inflammatory infiltration lymphocytes T were dominating while in adult periodontitis (AP) patients dominating were B lymphocytes. Mean CD4/CD8 ratio in control group was 1.7 and in EOP and AP patients 1.1 and 2.6 respectively.