start-ver=1.4
cd-journal=joma
no-vol=13
cd-vols=
no-issue=5
article-no=
start-page=577
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2025
dt-pub=20250306
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Efficacy of Oral Intake of Hydrogen-Rich Jelly Intake on Gingival Inflammation: A Double-Blind, Placebo-Controlled and Exploratory Randomized Clinical Trial
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Background/Objectives: Initiation and progression of periodontal disease include oxidative stress. Systemic application of antioxidants may provide clinical benefits against periodontal disease including gingivitis. Recently, a jelly containing a high concentration of hydrogen (40 ppm) was developed. We hypothesized that oral intake of this hydrogen-rich jelly may be safe and effective on gingivitis. This clinical trial was designed to investigate the safety and efficacy of oral intake of hydrogen-rich jelly against gingival inflammation. Methods: Participants with gingivitis were instructed to orally ingest 30 g of hydrogen-rich jelly (experimental group) or placebo jelly (control group) three times a day for 14 consecutive days. The primary outcome of this trial was the percentage of bleeding on probing (BOP) sites. Secondary outcomes were oral parameters, serum reactive oxygen metabolites, antioxidant capacity, oxidative index, concentrations of cytokine (interleukin [IL]-1ƒÀ, IL-6, IL-10, IL-17, and tumor necrosis factor-alpha) in gingival crevicular fluid, and adverse events. For all parameters, Mann?Whitney U test was used for comparison between experimental and control groups. Analysis of covariance, controlling for baseline periodontal inflamed surface area, was performed to evaluate the association between the effect of the hydrogen-rich jelly and gingival inflammation. Results: In the experiment and control groups, the percentage of sites with BOP and PISA significantly decreased at the end of the experiment compared to the baseline. However, no significant differences were found between groups (p > 0.05). Conclusions: Administration of hydrogen-rich jelly for 14 days decreased gingival inflammation. However, no significant differences were identified compared to the control group.
en-copyright=
kn-copyright=

en-aut-name=MaruyamaTakayuki
en-aut-sei=Maruyama
en-aut-mei=Takayuki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=TakayamaEiji
en-aut-sei=Takayama
en-aut-mei=Eiji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=TokunoShinichi
en-aut-sei=Tokuno
en-aut-mei=Shinichi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=MoritaManabu
en-aut-sei=Morita
en-aut-mei=Manabu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=EkuniDaisuke
en-aut-sei=Ekuni
en-aut-mei=Daisuke
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

affil-num=1
en-affil=Department of Preventive Dentistry, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
kn-affil=

affil-num=2
en-affil=Department of Oral Biochemistry, Asahi University School of Dentistry
kn-affil=

affil-num=3
en-affil=Graduate School of Health Innovation, Kanagawa University of Human Services
kn-affil=

affil-num=4
en-affil=Department of Oral Health, Takarazuka University of Medical and Health Care
kn-affil=

affil-num=5
en-affil=Department of Preventive Dentistry, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
kn-affil=
en-keyword=periodontal disease
kn-keyword=periodontal disease
en-keyword=oxidative stress
kn-keyword=oxidative stress
en-keyword=hydrogen
kn-keyword=hydrogen
en-keyword=randomized controlled trial
kn-keyword=randomized controlled trial
END