FlashWater Hypochlorous Acid Solution Featured in Peer-Reviewed Periodontitis Biofilm Research

Flashwater Biological Technology’s hypochlorous acid solution was used in a peer-reviewed study exploring a potential anti-biofilm approach for periodontitis. The research article, titled “Hypochlorous acid solution serves as a potential anti-biofilm therapy for periodontitis via targeting quorum sensing of periodontal pathogens,” was published in the Journal of Oral Microbiology in September 2025 and is publicly available through PubMed Central, an archive maintained by the U.S. National Library of Medicine.

The study was conducted by researchers affiliated with the Affiliated Stomatological Hospital of Nanjing Medical University, the State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, and the Jiangsu Province Engineering Research Center of Stomatological Translational Medicine.

Investigating a Major Challenge in Periodontal Care

Periodontitis is a chronic inflammatory condition associated with pathogenic biofilms that form around the teeth and supporting tissues. These structured microbial communities can be more resistant to antimicrobial treatment than free-floating bacteria, creating challenges for effective biofilm control—particularly in areas that are difficult to reach through mechanical instrumentation alone.

The researchers investigated hypochlorous acid solution as a potential adjunctive approach because of its antimicrobial properties and reported biocompatibility profile. According to the paper, hypochlorous acid stock solutions at concentrations of 500 mg/L and 2,000 mg/L were supplied by Flashwater Biological Technology in Nantong, China, and diluted to the concentrations required for the experiments.

Laboratory and Animal-Model Evaluation

The study combined laboratory experiments with an animal model of periodontitis. In vitro testing examined the effects of hypochlorous acid solution on both single-species and multi-species periodontal pathogenic biofilms. The bacterial models included Porphyromonas gingivalis, Fusobacterium nucleatum, Prevotella intermedia, and Enterococcus faecalis.

Researchers assessed biofilm biomass, metabolic activity, structure, bacterial viability, cellular compatibility, oxidative stress, and quorum-sensing activity. They also compared the hypochlorous acid solution with a 0.25% sodium hypochlorite solution in parts of the study.

For the in vivo component, the research team used a rat periodontitis model to evaluate changes in alveolar bone resorption and periodontal inflammation after localized treatment. The authors reported that the hypochlorous acid solution reduced bone resorption and inflammatory indicators under the tested experimental conditions.

Key Findings Reported by the Researchers

The study reported several notable observations:

• Hypochlorous acid solution inhibited the growth of the periodontal pathogens tested, with results varying by concentration and bacterial species.
• It reduced biofilm biomass and metabolic activity in both single-species and multi-species models.
• Microscopic imaging showed concentration-dependent disruption of established biofilm structures.
• Compared with 0.25% sodium hypochlorite under the study conditions, the hypochlorous acid solution demonstrated better biocompatibility in the evaluated periodontal cell models.
• The researchers observed increased reactive oxygen species and changes in genes associated with oxidative stress and biofilm virulence.
• Hypochlorous acid solution inhibited autoinducer-2 activity and downregulated genes related to quorum sensing—a bacterial communication process involved in biofilm formation and behavior.
• In the rat model, treatment was associated with reduced alveolar bone loss and periodontal inflammation.

Based on these findings, the authors concluded that hypochlorous acid solution may offer a promising anti-biofilm strategy for periodontal therapy, including as a potential adjunct for biofilms in areas that are difficult to access with instruments. Further clinical research in humans will be necessary to establish clinical efficacy, optimal protocols, and safety for specific applications.

Supporting Scientific Exploration of Hypochlorous Acid

The publication contributes to the expanding scientific discussion surrounding hypochlorous acid and its potential use in oral-care and biofilm-control settings. For FlashWater, the use of its hypochlorous acid solution in this independent academic study reflects the relevance of consistent solution technology to ongoing research in microbiology and dentistry.

FlashWater remains committed to supporting responsible scientific investigation and quality-focused hypochlorous acid solutions for research and professional applications.

Read the Original Research

Article: Hypochlorous acid solution serves as a potential anti-biofilm therapy for periodontitis via targeting quorum sensing of periodontal pathogens

Journal: Journal of Oral Microbiology, Volume 17, Issue 1 (2025)

DOI: 10.1080/20002297.2025.2557959

PubMed Central: PMC12434847

Editorial and Compliance Note

This article summarizes findings from an independent preclinical study. The research included in vitro experiments and an animal model; it does not establish efficacy in humans. Availability of an article through PubMed Central does not constitute endorsement by the U.S. National Library of Medicine, the National Institutes of Health, or any other U.S. government agency. Product descriptions should not be interpreted as medical advice or as claims that a product is approved to diagnose, treat, cure, or prevent disease.