A Clinical Trial to Assess the Safety and the Anti-caries Efficacy of COL 101 (Arginine) Non-fluoride Dentifrices in Comparison With 0.24% Sodium Fluoride (1100 Ppm F) Dentifrice Control in 10 to 14-year-old Children

A Phase 2 Randomized, Double-blind, Active-controlled Multi-center Clinical Trial to Assess the Safety and the Anti-caries Efficacy of COL 101 (Arginine) Non-fluoride Dentifrices With 1.5%, 4.0% and 8.0% Arginine Each in Comparison With 0.24% Sodium Fluoride (1100 Ppm F) Dentifrice Control in 10 to 14-year-old Children

The objective of this study is to assess the safety and to evaluate the anti-caries efficacy of COL101 (arginine) non-fluoride dentifrices compared to a 0.24% sodium fluoride dentifrice in 10-14 year-old children over a one year period.

Study Overview

• Status: Completed
• Conditions: Dental Caries
• Intervention / Treatment: Drug: 0.24% Sodium Fluoride Dentifrice; Drug: 1.5% Arginine Dentifrice; Drug: 4.0% Arginine Dentifrice; Drug: 8.0% Arginine Dentifrice

Detailed Description

In this phase 2, double-blind, randomized, active-controlled multi-center study, 2025 subjects were randomized in a ratio of 1:1:1:1 into one of four parallel study groups (1.5% arginine dentifrice, 4.0% arginine dentifrice, 8.0% arginine dentifrice or 0.24% NaF dentifrice with no arginine). Subjects were asked to brush their teeth twice daily at home (unsupervised use) with the assigned dentifrice for a duration of 1 year. Measurements for efficacy, safety and assessment of product use compliance were conducted at baseline, 6 months (±1 month) and 1 year (±1 month). Additional safety evaluations including evaluation of oral soft and hard tissues, as well as product use compliance assessment was performed at 3 months and 9 months (±1 month). All subjects were monitored for adverse events (AEs) during the course of the study.

• Study Type: Interventional
• Enrollment (Actual): 2025
• Phase: Phase 2

Contacts and Locations

Study Locations

• Puerto Rico
  • San Juan, Puerto Rico
    • University of Puerto Rico School of Dental Medicine
• United States
  • California
    • Loma Linda, California, United States, 92350
      • Loma Linda University School of Dentistry
  • Florida
    • Gainesville, Florida, United States, 32610
      • University of Florida College of Dentistry
  • Indiana
    • Indianapolis, Indiana, United States, 46202-2876
      • Indiana University School of Dentistry
  • Massachusetts
    • Boston, Massachusetts, United States, 02111
      • Tufts University School of Dental Medicine
    • Boston, Massachusetts, United States, 02142
      • The Forsyth Institute
  • New York
    • Buffalo, New York, United States, 14214
      • University at Buffalo School of Dental Medicine
  • Pennsylvania
    • Philadelphia, Pennsylvania, United States, 19104-6003
      • University of Pennsylvania School of Dental Medicine
  • Texas
    • San Antonio, Texas, United States, 78229-3900
      • UT Health San Antonio School of Dentistry

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 10 years to 14 years (Child)
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

• Subjects meeting all criteria below will be included in the study:

  1. Subject assent and parental/guardian informed consent for voluntary participation.
  2. Willingness and ability to use the assigned products according to instructions, availability for all appointments and likelihood of completing the clinical trial.
  3. Children ages 10-14 years at baseline.
  4. Presence of permanent second molars or evidence of at least one permanent second molar erupting as indicated by cuspal break through the mucosa.
  5. Good general health as evidenced by a review of the medical history.
  6. Subjects who, at study entry, have present two or more active caries lesions (ICDAS scores of 2 or greater) in permanent teeth and previous caries experience (DMFT >1), D= Decayed is defined as ICDAS scores of 3 or greater

Exclusion Criteria:

• Subjects presenting any of the criteria below will be excluded from the study:

  1. Presence of fixed or removable prosthetic appliance or orthodontic treatment involving more than four permanent teeth.

  2. Use of medication that could increase the risk of developing dental caries, i.e.

     medications that reduce saliva flow and those with high sugar content.

  3. Long-term antibiotic therapy.
  4. Children with a confirmed diagnosis of cognitive and/or motor impairment.
  5. Severe malocclusion.
  6. Subjects who, at study entry, have present severe caries (ICDAS 5 or 6) on five or more permanent teeth.
  7. Evidence of moderate to severe periodontal disease.
  8. Participation in any other clinical study within the 30 days preceding the start of the clinical study.
  9. Known history of allergies or other adverse reactions to arginine, or oral care products, or their ingredients.
  10. Self-reported history of being currently pregnant, intending to become pregnant during the trial period or breast-feeding.

Study Plan

How is the study designed?

Design Details

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

Number of Arms

4

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: 0.24% Sodium Fluoride Dentifrice; Toothpaste	Drug: 0.24% Sodium Fluoride Dentifrice; Whole mouth brushing with a toothpaste, 2 times/day for 2 minutes each time for the duration of the study
Experimental: 1.5% Arginine Dentifrice; Toothpaste	Drug: 1.5% Arginine Dentifrice; Whole mouth brushing with a toothpaste, 2 times/day for 2 minutes each time for the duration of the study
Experimental: 4.0% Arginine Dentifrice; Toothpaste	Drug: 4.0% Arginine Dentifrice; Whole mouth brushing with a toothpaste, 2 times/day for 2 minutes each time for the duration of the study
Experimental: 8.0% Arginine Dentifrice; Toothpaste	Drug: 8.0% Arginine Dentifrice; Whole mouth brushing with a toothpaste, 2 times/day for 2 minutes each time for the duration of the study

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Incremental Subject-wise Decayed Missing or Filled Surfaces (DMFS) Score Between the Baseline and the Month 12 Visits	The Decayed Missing or Filled Surfaces (DMFS) score is a measure of the extent of dental caries for a subject, defined as the number of scorable tooth surfaces among the up to 128 examined surfaces in the subject's mouth that were determined by the examiner to be decayed, missing, or filled. This score can range between 0 and 128, with higher values indicating a greater level of disease (i.e., worse condition). The Incremental DMFS is defined as the change in DMFS score between two examinations performed at specified time points, calculated by subtraction.	Between the Baseline and the Month 12 visits

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Incremental Subject-wise Decayed Missing or Filled Surfaces (DMFS) Score Between the Baseline and the Month 6 Visits	The Decayed Missing or Filled Surfaces (DMFS) score is a measure of the extent of dental caries for a subject, defined as the number of scorable tooth surfaces among the up to 128 examined surfaces in the subject's mouth that were determined by the examiner to be decayed, missing, or filled. This score can range between 0 and 128, with higher values indicating a greater level of disease (i.e., worse condition). The Incremental DMFS is defined as the change in DMFS score between two examinations performed at specified time points, calculated by subtraction.	Between the Baseline and the Month 6 visits
Incremental Subject-wise Decayed Missing or Filled Surfaces (DMFS) Score Between the Month 6 and Month 12 Visits	The Decayed Missing or Filled Surfaces (DMFS) score is a measure of the extent of dental caries for a subject, defined as the number of scorable tooth surfaces among the up to 128 examined surfaces in the subject's mouth that were determined by the examiner to be decayed, missing, or filled. This score can range between 0 and 128, with higher values indicating a greater level of disease (i.e., worse condition). The Incremental DMFS is defined as the change in DMFS score between two examinations performed at specified time points, calculated by subtraction.	Between the Month 6 and the Month 12 visits
Incremental Subject-wise Decayed Missing or Filled Teeth (DMFT) Score Between the Baseline and the Month 6 Visits	The Decayed Missing or Filled Teeth (DMFT) score is a measure of the extent of dental caries for a subject, defined as the number of the up to 28 examined teeth in the subject's mouth on which the examiner determined at least one surface to be decayed, missing, or filled. This score can range between 0 and 28, with higher values indicating a greater level of disease (i.e., worse condition). The Incremental DMFT is defined as the change in DMFT score between two examinations performed at specified time points, calculated by subtraction.	Between the Baseline and the Month 6 visits
Incremental Subject-wise Decayed Missing or Filled Teeth (DMFT) Score Between the Baseline and the Month 12 Visits	The Decayed Missing or Filled Teeth (DMFT) score is a measure of the extent of dental caries for a subject, defined as the number of the up to 28 examined teeth in the subject's mouth on which the examiner determined at least one surface to be decayed, missing, or filled. This score can range between 0 and 28, with higher values indicating a greater level of disease (i.e., worse condition). The Incremental DMFT is defined as the change in DMFT score between two examinations performed at specified time points calculated by subtraction.	Between the Baseline and the Month 12 visits
Incremental Subject-wise Decayed Missing or Filled Teeth (DMFT) Score Between the Month 6 and the Month 12 Visits	The Decayed Missing or Filled Teeth (DMFT) score is a measure of the extent of dental caries for a subject, defined as the number of the up to 28 examined teeth in the subject's mouth on which the examiner determined at least one surface to be decayed, missing, or filled. This score can range between 0 and 28, with higher values indicating a greater level of disease (i.e., worse condition). The Incremental DMFT is defined as the change in DMFT score between two examinations performed at specified time points, calculated by subtraction.	Between the Month 6 and the Month 12 visits
Subject-wise Tallies of Clinically Significant International Caries Detection and Assessment System (ICDAS) Severity Score Progressions Between the Baseline and the Month 6 Visits	The ICDAS caries severity score is a parameter that reports the level of dental caries on each tooth surface using a 7-point ordinal scale ranging from 0 to 6, where higher scores are worse. When considering the time frame between two specified examinations, a clinically significant score progression is defined as a worsening from a score of 0 to a score of 2 or higher; from a score of 1 or 2 to a score of 3 or higher; or from a score of 3 or 4 to a score of 5 or 6. Surfaces with scores between 0 and 4 at the earlier examination are defined as being at risk for caries severity progression. For each subject, the number of at-risk tooth surfaces was recorded, as well as the number of those at-risk surfaces that presented a clinically significant caries severity progression between the two examinations. For each treatment group, the mean of the subject-wise percentages of at-risk surfaces exhibiting a clinically significant caries progression was calculated.	Between the Baseline and the Month 6 visits
Subject-wise Tallies of Clinically Significant International Caries Detection and Assessment System (ICDAS) Severity Score Progressions Between the Baseline and the Month 12 Visits	The ICDAS caries severity score is a parameter that reports the level of dental caries on each tooth surface using a 7-point ordinal scale ranging from 0 to 6, where higher scores are worse. When considering the time frame between two specified examinations, a clinically significant score progression is defined as a worsening from a score of 0 to a score of 2 or higher; from a score of 1 or 2 to a score of 3 or higher; or from a score of 3 or 4 to a score of 5 or 6. Surfaces with scores between 0 and 4 at the earlier examination are defined as being at risk for caries severity progression. For each subject, the number of at-risk tooth surfaces was recorded, as well as the number of those at-risk surfaces that presented a clinically significant caries severity progression between the two examinations. For each treatment group, the mean of the subject-wise percentages of at-risk surfaces exhibiting a clinically significant caries progression was calculated.	Between the Baseline and the Month 12 visits
Subject-wise Tallies of Clinically Significant International Caries Detection and Assessment System (ICDAS) Severity Score Progressions Between the Month 6 and the Month 12 Visits	The ICDAS caries severity score is a parameter that reports the level of dental caries on each tooth surface using a 7-point ordinal scale ranging from 0 to 6, where higher scores are worse. When considering the time frame between two specified examinations, a clinically significant score progression is defined as a worsening from a score of 0 to a score of 2 or higher; from a score of 1 or 2 to a score of 3 or higher; or from a score of 3 or 4 to a score of 5 or 6. Surfaces with scores between 0 and 4 at the earlier examination are defined as being at risk for caries severity progression. For each subject, the number of at-risk tooth surfaces was recorded, as well as the number of those at-risk surfaces that presented a clinically significant caries severity progression between the two examinations. For each treatment group, the mean of the subject-wise percentages of at-risk surfaces exhibiting a clinically significant caries progression was calculated.	Between the Month 6 and the Month 12 visits
Subject-wise Tallies of Clinically Significant International Caries Detection and Assessment System (ICDAS) Caries Severity Score Regressions Between the Baseline and the Month 6 Visits	The ICDAS caries severity score is a parameter that reports the level of dental caries on each tooth surface using a 7-point ordinal scale ranging from 0 to 6, where higher scores are worse. When considering the time frame between two specified examinations, a clinically significant score severity score regression on a tooth surface is defined as an improvement from a score of 2 or higher to a score of 0 or 1. Tooth surfaces for which the earlier score was between 2 and 6 are defined as being at risk for caries severity regression. For each subject, the number of at-risk tooth surfaces was recorded, as well as the number of those at-risk surfaces that presented a clinically significant caries severity regression between the two examinations. For each treatment group, the mean of the subject-wise percentages of at-risk surfaces exhibiting a clinically significant caries regression was calculated.	Between the Baseline and the Month 6 visits
Subject-wise Tallies of Clinically Significant International Caries Detection and Assessment System (ICDAS) Caries Severity Score Regressions Between the Baseline and the Month 12 Visits	The ICDAS caries severity score is a parameter that reports the level of dental caries on each tooth surface using a 7-point ordinal scale ranging from 0 to 6, where higher scores are worse. When considering the time frame between two specified examinations, a clinically significant score severity score regression on a tooth surface is defined as an improvement from a score of 2 or higher to a score of 0 or 1. Tooth surfaces for which the earlier score was between 2 and 6 are defined as being at risk for caries severity regression. For each subject, the number of at-risk tooth surfaces was recorded, as well as the number of those at-risk surfaces that presented a clinically significant caries severity regression between the two examinations. For each treatment group, the mean of the subject-wise percentages of at-risk surfaces exhibiting a clinically significant caries regression was calculated.	Between the Baseline and the Month 12 visits
Subject-wise Tallies of Clinically Significant International Caries Detection and Assessment System (ICDAS) Caries Severity Score Regressions Between the Month 6 and the Month 12 Visits	The ICDAS caries severity score is a parameter that reports the level of dental caries on each tooth surface using a 7-point ordinal scale ranging from 0 to 6, where higher scores are worse. When considering the time frame between two specified examinations, a clinically significant score severity score regression on a tooth surface is defined as an improvement from a score of 2 or higher to a score of 0 or 1. Tooth surfaces for which the earlier score was between 2 and 6 are defined as being at risk for caries severity regression. For each subject, the number of at-risk tooth surfaces was recorded, as well as the number of those at-risk surfaces that presented a clinically significant caries severity regression between the two examinations. For each treatment group, the mean of the subject-wise percentages of at-risk surfaces exhibiting a clinically significant caries regression was calculated.	Between the Month 6 and the Month 12 visits
Subject-wise Tallies of Clinically Significant International Caries Detection and Assessment System (ICDAS) Caries Activity Progressions Between the Baseline and the Month 6 Visits	The ICDAS caries activity score is a parameter that reports the presence of active dental caries on a tooth surface utilizing a binary categorical scale of 0 (no active caries present) or 1 (active caries present). A score of 0 is the more favorable outcome. When considering the time frame between two specified examinations, a clinically significant score progression is defined as a worsening from a score of 0 to a score of 1. Surfaces with a score of 0 at the earlier examination are defined as being at risk for caries activity progression. For each subject, the number of at-risk tooth surfaces was recorded, as well as the number of those at-risk surfaces that presented a clinically significant caries activity progression between the two examinations. For each treatment group, the mean of the subject-wise percentages of at-risk surfaces exhibiting a clinically significant caries activity progression was calculated.	Between the Baseline and the Month 6 visits
Subject-wise Tallies of Clinically Significant International Caries Detection and Assessment System (ICDAS) Caries Activity Progressions Between the Baseline and the Month 12 Visits	The ICDAS caries activity score is a parameter that reports the presence of active dental caries on a tooth surface utilizing a binary categorical scale of 0 (no active caries present) or 1 (active caries present). A score of 0 is the more favorable outcome. When considering the time frame between two specified examinations, a clinically significant score progression is defined as a worsening from a score of 0 to a score of 1. Surfaces with a score of 0 at the earlier examination are defined as being at risk for caries activity progression. For each subject, the number of at-risk tooth surfaces was recorded, as well as the number of those at-risk surfaces that presented a clinically significant caries activity progression between the two examinations. For each treatment group, the mean of the subject-wise percentages of at-risk surfaces exhibiting a clinically significant caries activity progression was calculated.	Between the Baseline and the Month 12 visits
Subject-wise Tallies of Clinically Significant International Caries Detection and Assessment System (ICDAS) Caries Activity Progressions Between the Month 6 and the Month 12 Visits	The ICDAS caries activity score is a parameter that reports the presence of active dental caries on a tooth surface utilizing a binary categorical scale of 0 (no active caries present) or 1 (active caries present). A score of 0 is the more favorable outcome. When considering the time frame between two specified examinations, a clinically significant score progression is defined as a worsening from a score of 0 to a score of 1. Surfaces with a score of 0 at the earlier examination are defined as being at risk for caries activity progression. For each subject, the number of at-risk tooth surfaces was recorded, as well as the number of those at-risk surfaces that presented a clinically significant caries activity progression between the two examinations. For each treatment group, the mean of the subject-wise percentages of at-risk surfaces exhibiting a clinically significant caries activity progression was calculated.	Between the Month 6 and the Month 12 visits
Subject-wise Tallies of Clinically Significant International Caries Detection and Assessment System (ICDAS) Caries Activity Regressions Between the Baseline and the Month 6 Visits	The ICDAS caries activity score is a parameter that reports the presence of active dental caries on a tooth surface utilizing a binary categorical scale of 0 (no active caries present) or 1 (active caries present). A score of 0 is the more favorable outcome. When considering the time frame between two specified examinations, a clinically significant score regression is defined as an improvement from a score of 1 to a score of 0. Surfaces with a score of 1 at the earlier examination are defined as being at risk for caries activity regression. For each subject, the number of at-risk tooth surfaces was recorded, as well as the number of those at-risk surfaces that presented a clinically significant caries activity regression between the two examinations. For each treatment group, the mean of the subject-wise percentages of at-risk surfaces exhibiting a clinically significant caries activity regression was calculated.	Between the Baseline and the Month 6 visits
Subject-wise Tallies of Clinically Significant International Caries Detection and Assessment System (ICDAS) Caries Activity Regressions Between the Baseline and the Month 12 Visits	The ICDAS caries activity score is a parameter that reports the presence of active dental caries on a tooth surface utilizing a binary categorical scale of 0 (no active caries present) or 1 (active caries present). A score of 0 is the more favorable outcome. When considering the time frame between two specified examinations, a clinically significant score regression is defined as an improvement from a score of 1 to a score of 0. Surfaces with a score of 1 at the earlier examination are defined as being at risk for caries activity regression. For each subject, the number of at-risk tooth surfaces was recorded, as well as the number of those at-risk surfaces that presented a clinically significant caries activity regression between the two examinations. For each treatment group, the mean of the subject-wise percentages of at-risk surfaces exhibiting a clinically significant caries activity regression was calculated.	Between the Baseline and the Month 12 visits
Subject-wise Tallies of Clinically Significant International Caries Detection and Assessment System (ICDAS) Caries Activity Regressions Between the Month 6 and the Month 12 Visits	The ICDAS caries activity score is a parameter that reports the presence of active dental caries on a tooth surface utilizing a binary categorical scale of 0 (no active caries present) or 1 (active caries present). A score of 0 is the more favorable outcome. When considering the time frame between two specified examinations, a clinically significant score regression is defined as an improvement from a score of 1 to a score of 0. Surfaces with a score of 1 at the earlier examination are defined as being at risk for caries activity regression. For each subject, the number of at-risk tooth surfaces was recorded, as well as the number of those at-risk surfaces that presented a clinically significant caries activity regression between the two examinations. For each treatment group, the mean of the subject-wise percentages of at-risk surfaces exhibiting a clinically significant caries activity regression was calculated	Between the Month 6 and the Month 12 visits

Collaborators and Investigators

• Sponsor: Colgate Palmolive
• Investigators: Study Director: Maria E Ryan, DDS PhD, Colgate-Palmolive Company

Study record dates

Study Major Dates

• Study Start (Actual): January 21, 2021
• Primary Completion (Actual): February 28, 2024
• Study Completion (Actual): February 28, 2024

Study Registration Dates

• First Submitted: February 8, 2021
• First Submitted That Met QC Criteria: February 10, 2021
• First Posted (Actual): February 11, 2021

Study Record Updates

• Last Update Posted (Actual): July 21, 2026
• Last Update Submitted That Met QC Criteria: July 20, 2026
• Last Verified: July 1, 2026

More Information

Terms related to this study

• Keywords: prevention; fluoride; caries; arginine; ICDAS; DMFS
• Additional Relevant MeSH Terms: Stomatognathic Diseases; Tooth Diseases; Tooth Demineralization; Dental Caries; Physiological Effects of Drugs; Anti-Infective Agents, Local; Anti-Infective Agents; Protective Agents; Cariostatic Agents; Listerine; Fluorides; Sodium Fluoride
• Other Study ID Numbers: CRO-2020-CAR-ARG-ED

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