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Study identifier: NCT06967402 Synced from ClinicalTrials.gov · July 28, 2026
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Comparative Effects of Two Oral Antiseptics Used as an Adjuvant in the Treatment of Periodontitis

Condition: Periodontitis · Periodontitis Stage II · Periodontitis Stage III  ·  Sponsor: The University of Hong Kong

PhaseNA
Planned participants60
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

The focus of this study is on two types of mouthwashes - one containing a chlorhexidine (CHX) at 0.2% (CHX), and the other one containing CHX at a lower concentration of 0.12% with cetylpyridinium chloride (CPC). Both mouthwashes are used to help in the treatment of gum disease. CHX has been known for a long time for its effectiveness against plaque and mouth inflammation. It could inhibit and even kill them. However higher concentrations of CHX comes with unwanted side effect including altered taste, teeth staining and irritation in the mouth. Interestingly, these side effects seem to occur less frequently when a lower concentration CHX solution is used. CPC also combats bacteria by adhering quickly to the surfaces inside your mouth, although it has less substantivity than CHX, it has been shown to reduce plaque and gum inflammation effectively, and it typically causes fewer side effects than CHX. We hypothesize that this new formulation of CHX 0.12%+CPC mouthwash is non-inferior to CHX 0.2% in terms of its anti-plaque and anti-inflammatory properties while presenting with less side effects after 21 days of use. Microbiological samples and fluids from periodontal pockets will be collected before and after treatment for analysis of microbiological effects.

This description comes directly from the study's public registry record.

Talk to the study team

Melissa Fok, BDS, MDS (Perio), PhD  ·  +85228590495  ·  melfok@hku.hk

Amy Wong  ·  85228590485  ·  ammmymei@hku.hk

Always discuss trial participation with your own doctor first.

Locations (1)

HKU Faculty of Dentistry, IAD - Clinical Research CentreHong Kong, Hong KongRecruiting

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Source record: clinicaltrials.gov/study/NCT06967402