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VOLUME 23 , ISSUE 12 ( December, 2022 ) > List of Articles


Molecular Iodine Mouthrinse Antimicrobial Activity Against Periodontopathic Bacteria

Thomas E Rams, Jacqueline D Sautter, Seunghwa S Shin

Keywords : In vitro, Laboratory research, Molecular iodine, Mouthrinse, Periodontal pathogens, Periodontitis

Citation Information : Rams TE, Sautter JD, Shin SS. Molecular Iodine Mouthrinse Antimicrobial Activity Against Periodontopathic Bacteria. J Contemp Dent Pract 2022; 23 (12):1183-1189.

DOI: 10.5005/jp-journals-10024-3447

License: CC BY-NC 4.0

Published Online: 13-04-2023

Copyright Statement:  Copyright © 2022; The Author(s).


Aim: This study compared two molecular iodine mouthrinses for their in vitro bactericidal effects against subgingival biofilm bacteria from severe periodontitis patients. Materials and methods: In a subgingival biofilm eradication assay, dilution aliquots of subgingival microbial specimens from 32 adults with severe periodontitis were mixed in vitro with either a mouthrinse containing 100 parts per million (ppm) molecular iodine (Iorinse®) or one containing 150 ppm molecular iodine (iClean®), followed by mouthrinse neutralization after 60 seconds with 3% sodium thiosulfate. The mixtures, along with unexposed subgingival biofilm aliquots, were inoculated onto enriched Brucella blood agar and incubated anaerobically for 7 days to quantitate total viable bacterial counts and selected red/orange complex periodontal pathogens (Porphyromonas gingivalis, Tannerella forsythia, Prevotella intermedia/nigrescens, Parvimonas micra, Campylobacter rectus, and Fusobacterium nucleatum). Results: Both molecular iodine mouthrinses significantly reduced total viable bacterial counts in the subgingival biofilm samples, with iClean® providing significantly greater in vitro suppression than Iorinse®. Both molecular iodine mouthrinses also significantly reduced total red/orange complex periodontal pathogens, with significantly greater suppression also exhibited by iClean®. Conclusion: The molecular iodine mouthrinses exerted marked bactericidal activity in vitro against human subgingival biofilm microbial species, including red/orange complex periodontal pathogens associated with severe periodontitis, with iClean® providing significantly better antimicrobial activity than Iorinse®. Clinical significance: These findings suggest potential value of molecular iodine mouthrinses in the treatment and prevention of periodontal diseases.

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