• Am. J. Med. · Mar 2024

    Multicenter Study

    Effect of periodontal treatment on reducing chronic inflammation in systemically healthy patients with periodontal disease: a multicenter study.

    • Shinji Matsuda, Tomoaki Shintani, Tsuyoshi Miyagawa, Hiromichi Yumoto, Yasutaka Komatsu, Nanae Dewake, Takanori Iwata, Takatoshi Nagano, Toshiya Morozumi, Ryoma Goto, Satsuki Kato, Masahiro Kitamura, Kitetsu Shin, Satoshi Sekino, Akiko Yamashita, Keiko Yamashita, Atsutoshi Yoshimura, Tsutomu Sugaya, Shogo Takashiba, Yoichiro Taguchi, Eiji Nemoto, Hiromi Nishi, Noriyoshi Mizuno, Yukihiro Numabe, and Hiroyuki Kawaguchi.
    • Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan. Electronic address: matsudas@hiroshima-u.ac.jp.
    • Am. J. Med. 2024 Mar 1; 137 (3): 273279.e2273-279.e2.

    BackgroundWe determined the effects and an accurate marker of periodontal treatment on serum interleukin (IL)-6 and high-sensitivity C-reactive protein (HsCRP) levels in systemically healthy individuals with periodontal disease.MethodsThis multicenter study included systemically healthy individuals with periodontal disease who received initial periodontal treatment and had no periodontal treatment history. Periodontal parameters, including periodontal inflamed surface area, masticatory efficiency, and periodontal disease classification; serum IL-6 and HsCRP levels; and serum immunoglobulin (Ig)G titers against periodontal pathogens were evaluated at baseline and after treatment. Subjects were classified as low or high responders (group) based on periodontal inflamed surface area changes.ResultsThere were 153 participants. Only periodontal inflamed surface area changes were markedly different between low and high responders. Periodontal treatment (time point) decreased both serum IL-6 and HsCRP levels. The interaction between group and time point was remarkable only for serum IL-6 levels. Changes in serum immunoglobulin (Ig)G titers against periodontal pathogens were not associated with IL-6 changes in high responders. We analyzed the indirect effect of serum anti-Porphyromonas gingivalis type 2 IgG titer changes using mediation analysis and found no significance. However, the direct effect of group (low or high responder) on IL-6 changes was considerable.ConclusionsPeriodontal treatment effectively decreased serum IL-6 levels, independent of periodontal pathogen infection, in systemically healthy individuals with periodontal disease.Copyright © 2023 The Authors. Published by Elsevier Inc. All rights reserved.

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