Clinical Evaluation of a Toothpaste for Dental Plaque Reduction and Prevention of Gum Problems

September 21, 2026 updated by: Colgate Palmolive

Clinical Evaluation of a Stannous Fluoride Toothpaste Versus a 67% Bicarbonate Toothpaste and Colgate Cavity Protection Toothpaste for Dental Plaque Reduction and Prevention of Gum Problems: a Six-month Clinical Study in Italy

Qualified subjects will be enrolled and randomized to either one of the three study groups described above based on their initial modified gingivitis and plaque scores. Subjects will be instructed to use the products according to the instructions provided. Subjects will return to the dental office for evaluation after three months and six months of product use. All subjects will be followed for adverse events throughout the study.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

120

Phase

  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

  • Italy
    • Rome
      • Roma, Rome, Italy, 00187
        • Recruiting
        • Clinica Odontoiatrica Montesani
        • Contact:
        • Principal Investigator:
          • Luigi Montesani, MD, DDS

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Subjects, ages 18-70, inclusive.
  • Availability for the six-month duration of the study.
  • Good general health.
  • Initial gingivitis index of at least 1.5 as determined by the use of the Modified Gingivitis Index.
  • Initial plaque index of at least 1.5 as determined by the use of the Modified Quigley-Hein Plaque Index.
  • Signed Informed Consent Form

Exclusion Criteria:

  • Orthodontic bands.
  • Tumor(s) of the soft or hard tissues of the oral cavity.
  • Advanced periodontal disease (purulent exudate, tooth mobility), and/or
  • Extensive loss of periodontal attachment or alveolar bone.
  • Five or more carious lesions requiring immediate restorative treatment
  • Use of antibiotics any time during the one month prior to entry into the study.
  • Participation in any other clinical study or test panel within the one month prior to entry into the study.
  • Received a dental prophylaxis in the two weeks prior to your initial examination.
  • History of allergies to oral care/personal care consumer products or their ingredients.
  • Having taken any prescription medicines that might interfere with the study outcome.
  • If you with an existing medical condition which prohibits you from not eating or drinking for periods of up to 4 hours.
  • Self-reported pregnant or breast feeding an infant.
  • History of drug abuse

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Test 1 toothpaste

Approximately, 1.5 grams (full ribbon covering the head of toothbrush) of toothpaste shall be used for each brushing, 2 times daily (morning and evening) for 2 minutes each time
Drug: 0.45% SnF HW with NaF (1450 F)

toothpaste
Active Comparator: Positive Control

Approximately, 1.5 grams (full ribbon covering the head of toothbrush) of toothpaste shall be used for each brushing, 2 times daily (morning and evening) for 2 minutes each time
Drug: 67% Bicarbonate with NaF (1400 F)

toothpaste
Active Comparator: Negative Control

Approximately, 1.5 grams (full ribbon covering the head of toothbrush) of toothpaste shall be used for each brushing, 2 times daily (morning and evening) for 2 minutes each time
Drug: Colgate Cavity Protection Toothpaste

Toothpaste with MFP/NaF (1450 F)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Lobene Modified Gingivitis Assessment
Time Frame: Baseline, 3 month, 6 month

Modified Gingivitis Index score from 0 to 4 will be assigned by the examining dentist to all tooth surfaces using a dental light and dental mirror. A whole mouth mean score for each subject will be determined by adding the values given by the examining dentist to each scoreable surface and dividing that number by the total number of surfaces scored
Baseline, 3 month, 6 month
Saxton Gingival Bleeding Assessment
Time Frame: Baseline, 3 month, 6 month

Gingival bleeding is assessed 30 seconds after probing; a score of 0 represents an absence of bleeding, a score of 1 is given if bleeding is observed within 30 seconds after probing and a score of 2 is given if bleeding is observed immediately on probing
Baseline, 3 month, 6 month
Modified Quigley-Hein Plaque Index
Time Frame: Baseline, 3 month, 6 month

First using a red dye solution to disclose the plaque, a Modified Quigley-Hein Plaque Index score of 0 to 5 will be assigned to all scoreable disclosed tooth surfaces using a dental light and dental mirror. A whole mouth score for each subject will be determined by adding the values given by the dental examiner to each scoreable surface and dividing that number by the total number of surfaces scored.
Baseline, 3 month, 6 month

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Colgate Palmolive

Investigators

  • Principal Investigator: Luigi Montensani, DDS, Clinica Odontoiatrica Montesani

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

July 20, 2026

Primary Completion (Estimated)

January 1, 2027

Study Completion (Estimated)

January 1, 2027

Study Registration Dates

First Submitted

September 21, 2026

First Submitted That Met QC Criteria

September 21, 2026

First Posted (Actual)

September 25, 2026

Study Record Updates

Last Update Posted (Actual)

September 25, 2026

Last Update Submitted That Met QC Criteria

September 21, 2026

Last Verified

September 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CRO-2026-07-PGN-GAD-ITA-YPZ

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

Yes

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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