Image

Comparative Effects of Two Oral Antiseptics Used as an Adjuvant in the Treatment of Periodontitis

Comparative Effects of Two Oral Antiseptics Used as an Adjuvant in the Treatment of Periodontitis

Recruiting
18 years and older
All
Phase N/A

Powered by AI

Overview

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.

Description

  • Aim: To compare the effects of 2 formulations of antiseptics on clinical efficacy (reduction of gingival inflammation and plaque) and oral microbiome when used as an adjuvant in periodontal treatment.
  • Hypothesis: HA: The study mouthwash (CLX 0.12% + CPC 0.05%) when used as an adjunct to step 1 periodontal therapy, is non-inferior to control mouthwash (CHX 0.2%) in terms of inflammation and plaque control.
  • Primary outcome: Changes in full mouth Bleeding on Probing (BoP) at 2 months after 21 days daily use of test mouthwash as an adjunct to step 1 periodontal therapy compared to active control.
  • Secondary outcome:

Changes in BoP at 21 days after baseline. Changes in Löe and Silness Gingival Index at 21 days and 2 months after baseline.

Changes in modified O'Leary plaque index and Turesky modification of Quigley-Hein plaque index at 21 days, 2 months after baseline.

Changes in Tongue Coating Index and Lobene Stain Index at 14, 21 days and 2 months after baseline.

Pocket probing depth (PPD) and clinical attachment level (CAL) changes 2 months after baseline.

Subgingival microbiological changes at 21 days and 2 months after baseline. Gingival cervical fluid volume and inflammatory biomarker profile changes at 21 days and 2 months.

Taste alteration and mucosal irritation at 14 days, 21 days and 2 months after baseline.

Changes in patient-reported outcome measures at 21 days and 2 months after baseline

Eligibility

Inclusion Criteria:

  • Consenting patients with at least 6 evaluable teeth in each quadrant, including minimum 1 molar and 1 premolar.
  • Generalized stage II-III periodontitis patients.
  • Baseline BOP \> 25%.
  • No known allergy or adverse effects to CHX or CPC
  • Non-smokers, non-orthodontic patients, no concurrent or past antibiotics/medication known to affect periodontal status (i.e. calcium antagonists, phenytoin)/anti-inflammatory therapy (i.e. NASIDs) in the last 3 months, pregnant/breastfeeding, compliance to study procedures.
  • ASA class I-II patients.
  • Either non-diabetic or with controlled diabetes (HbA1C\<7).
  • Normal/Elevated blood pressure (AHA - Systolic \<130mmHg; Diastolic \<80mmHg).
  • No radiation/chemotherapy in the past 5 years
  • No immunosuppression including drug induced immunosuppression.
  • No participation in other clinical studies in the last 4 weeks.
  • No administration of CHX or CPC in the last 3 months
  • No periodontal treatment in the last 3 months.

Exclusion Criteria:

  • Unable to provide written consent.
  • Non-compliant study procedures.
  • Patients with medical (including psychiatric) and pharmacotherapeutic histories that, in the investigator's opinion, may compromise the protocol.
  • Patients requiring antibiotics prophylaxis for dental procedures.
  • Patients with self-reported pregnancy or patients who are breastfeeding.
  • Patients with history of use of systemic antibiotics, in combination with any form of periodontal treatment, within the past 3 months.
  • Patients with uncontrolled endocrine disease.
  • Patients who are not compliant with the review protocol, leading to deviation of more than 1 week.
  • Patients requiring the admission of systemic antibiotics, in combination with any form of dental treatment, during the study period.

Study details
    Periodontitis
    Periodontitis Stage II
    Periodontitis Stage III

NCT06967402

The University of Hong Kong

27 June 2026

Step 1 Get in touch with the nearest study center
We have submitted the contact information you provided to the research team at {{SITE_NAME}}. A copy of the message has been sent to your email for your records.
Would you like to be notified about other trials? Sign up for Patient Notification Services.
Sign up

Send a message

Enter your contact details to connect with study team

Investigator Avatar

Primary Contact

  Other languages supported:

First name*
Last name*
Email*
Phone number*
Other language

FAQs

Learn more about clinical trials

What is a clinical trial?

A clinical trial is a study designed to test specific interventions or treatments' effectiveness and safety, paving the way for new, innovative healthcare solutions.

Why should I take part in a clinical trial?

Participating in a clinical trial provides early access to potentially effective treatments and directly contributes to the healthcare advancements that benefit us all.

How long does a clinical trial take place?

The duration of clinical trials varies. Some trials last weeks, some years, depending on the phase and intention of the trial.

Do I get compensated for taking part in clinical trials?

Compensation varies per trial. Some offer payment or reimbursement for time and travel, while others may not.

How safe are clinical trials?

Clinical trials follow strict ethical guidelines and protocols to safeguard participants' health. They are closely monitored and safety reviewed regularly.
Add a private note
  • abc Select a piece of text.
  • Add notes visible only to you.
  • Send it to people through a passcode protected link.