Clinical importance of neuregulin‐4 and its receptor ErbB4 in periodontal disease pathogenesis

Objective The aim of this clinical trial was to evaluate the levels of Neuregulin‐4 (Nrg4), Erb‐b2 receptor tyrosine kinase 4 (ErbB4), interleukin (IL)‐6, IL‐10, nitric oxide synthase (NOS)‐2, and arginase (Arg)‐1 in periodontal health and disease. Materials and Methods This study includes systemically healthy 20 periodontally healthy (H), 20 gingivitis (G), 20 stage II periodontitis (P1), and 20 stage III periodontitis (P2) subjects....