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NCT Number: NCT07255040

A Clinical Study to Evaluate the Effectiveness of an Experimental Toothpaste in Improving Gum Health and Reducing Plaque Accumulation

The aim of this 24-week clinical study is to evaluate the ability of an experimental dentifrice containing 0.454 percent (%) weight by weight (w/w) Stannous fluoride (SnF2); to improve gingival health, plaque reduction and prevention of plaque accumulation compared with a regular fluoride dentifrice (negative control) in participants with mild to moderate gingivitis.

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Key information

Conditions

Dental Plaque Dental Deposits Gingival Diseases Gingivitis Infections Mouth Diseases Periodontal Diseases Stomatognathic Diseases Tooth Diseases

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Salus Research, Inc.

Fort Wayne, Indiana, 46825, United States

Location status: Recruiting

Location contact

Jeffery L Milleman

CONTACT

[email protected]

About this study

This will be a single-center, 24-week, randomized, controlled, single blind (examiner only), 3-treatment arms, parallel group, stratified study, to evaluate the efficacy of using an experimental dentifrice containing 0.454% w/w Stannous fluoride, twice daily in reducing gingivitis and plaque accumulation in a population with clinically measurable level of gingivitis. The clinical efficacy of the experimental dentifrice will be compared to a commercially available regular fluoride dentifrice as negative control. In addition, a marketed dentifrice containing 0.454% w/w SnF2 is included as positive control to provide a well-established benchmark. Approximately 300 participants (approximately 100 per group) will be randomized to ensure approximately 270 evaluable participants (approximately 90 per group) complete the study.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Participant provision of a signed and dated informed consent document indicating that the participant has been informed of all pertinent aspects of the study before any assessment is performed.
  • Participant is of either sex and any gender who, at the time of screening, is at least 18 years old, inclusive.
  • A participant who is willing and able to comply with scheduled visits, treatment plan and other study procedures.
  • A participant in good general and mental health with, in the opinion of the investigator or medically qualified designee, no clinically significant or relevant abnormalities in medical history or upon oral examination, or condition, that would impact the participant 's safety, wellbeing or the outcome of the study, if they were to participate in the study, or affect the individual's ability to understand and follow study procedures and requirements.

Exclusion criteria

  • A participant who is an employee of the investigational site, either directly involved in the conduct of the study or a member of their immediate family; or an employee of the investigational site otherwise supervised by the investigator; or a Haleon employee directly involved in the conduct of the study or a member of their immediate family.
  • A participant who has participated in other studies (including non-medicinal studies) involving investigational product(s) within 30 days prior to study entry and/or during study participation.
  • A participant with, in the opinion of the investigator or medically qualified designee, an acute or chronic medical, psychiatric condition or laboratory abnormality or any other clinical serious or unstable conditions (example, cardiovascular diseases, diabetes, liver disorders, and kidney disorders) that may increase the risk associated with study participation or investigational product administration or may interfere with the interpretation of study results and, in the judgment of the investigator or medically qualified designee, would make the participant inappropriate for entry into this study.
  • A female participant who is a pregnant (self-reported) or intending to become pregnant over the duration of the study or who is breastfeeding.
  • A participant with known or suspected intolerance or hypersensitivity to the study materials (or closely related compounds) or any of their stated ingredients.
  • A participant unwilling or unable to comply with the Lifestyle Considerations described in this protocol.
  • A participant who is a current smoker or an ex-smoker (including vaping) who stopped within 6 months of Screening or who is using smokeless forms of tobacco (example, chewing tobacco, gutkha, pan containing tobacco, nicotine-based e-cigarettes).
  • A participant who is diagnosed with xerostomia or is taking any medication that in the view of the investigator is causing xerostomia.
  • A participant who has a medical condition which could have directly influenced gingival bleeding (example, type 2 diabetes) or who has a bleeding disorder that could have affected study outcomes and/or participant safety.
  • A participant who has a recent history (within the last year) of alcohol or other substance abuse.
  • A participant who has a severe oral condition (example, acute necrotizing ulcerative gingivitis or oral or peri-oral ulceration including herpetic lesions) that could, in the opinion of the investigator, compromise study outcomes or the oral health of the participant/examiner if they participate in the study.
  • Presence of a tongue or lip piercing, or any other oral feature that could interfere with the usage of a toothbrush.
  • Dental Exclusions:
  • A participant who has active caries that could, in the opinion of the investigator, compromise study outcomes or the oral health of the participant if they participate in the study.
  • A participant who has dentures (partial or full).
  • A participant who has fixed orthodontic appliances or is undergoing active or recent (within 3 months of Screening) orthodontic treatment, which in the opinion of the investigator, could interfere with study procedures, assessments or outcomes.
  • A participant who has other orthodontic devices (example, bands, fixed retainers, or removable retainers) that could, in the opinion of the investigator, interfere with study procedures, assessment or outcomes.
  • A participant who has numerous restorations in a poor state of repair.
  • A participant who has any dental condition (example, overcrowding) that could, in the opinion of the investigator, compromise study outcomes or the oral health of the participant if they participate in the study.
  • A participant who has had dental prophylaxis within 12 weeks of Screening.
  • A participant who has had teeth bleaching within 12 weeks of Screening.
  • A participant who has high levels of extrinsic stain or calculus deposits, in the opinion of the investigator, that could have interfered with plaque assessments.
  • A participant who has previously been enrolled in this study.
  • A participant who, in the opinion of the investigator or medically qualified designee, should not participate in the study.

Treatment and study plan

Test Dentifrice

Drug

Experimental dentifrice containing 0.454% w/w SnF2.

Parodontax Complete Protection

Drug

Marketed dentifrice containing 0.454% w/w SnF2.

Colgate Cavity Protection

Drug

Marketed regular fluoride dentifrice.

Primary outcomes

  1. Number of Bleeding Sites (Overall) at Week 24

    Time frame: Week 24

    Number of bleeding sites will be assessed using the bleeding index (BI) assessment. BI will be assessed for all evaluable surfaces of the facial and lingual/palatal gingiva, six sites per tooth. The probe will be inserted approximately 1 millimeter (mm) into the gingival sulcus and moved around the tooth from the distal interproximal area to the mesial interproximal area, gently stretching the gingival epithelium. The number of bleeding sites for each participant will be calculated as the number of tooth sites with bleeding observed immediately on probing or within 30 seconds of probing.

Secondary outcomes

  1. Number of Bleeding Sites (Overall) at Weeks 1, 4 and 12

    Time frame: Weeks 1, 4 and 12

    Number of bleeding sites will be assessed using the BI assessment. BI will be assessed for all evaluable surfaces of the facial and lingual/palatal gingiva, six sites per tooth. The probe will be inserted approximately 1 mm into the gingival sulcus and moved around the tooth from the distal interproximal area to the mesial interproximal area, gently stretching the gingival epithelium. The number of bleeding sites for each participant will be calculated as the number of tooth sites with bleeding observed immediately on probing or within 30 seconds of probing.

  2. Number of Bleeding Sites (Interproximal) at Weeks 1, 4 and 12

    Time frame: Weeks 1, 4 and 12

    Number of bleeding sites will be assessed using the BI assessment. BI will be assessed for all evaluable surfaces of the facial and lingual/palatal gingiva, six sites per tooth. The probe will be inserted approximately 1 mm into the gingival sulcus and moved around the tooth from the distal interproximal area to the mesial interproximal area, gently stretching the gingival epithelium. The number of bleeding sites for each participant will be calculated as the number of tooth sites with bleeding observed immediately on probing or within 30 seconds of probing.

  3. Number of Bleeding Sites (Interproximal) at Week 24

    Time frame: Week 24

    Number of bleeding sites will be assessed using the BI assessment. BI will be assessed for all evaluable surfaces of the facial and lingual/palatal gingiva, six sites per tooth. The probe will be inserted approximately 1 mm into the gingival sulcus and moved around the tooth from the distal interproximal area to the mesial interproximal area, gently stretching the gingival epithelium. The number of bleeding sites for each participant will be calculated as the number of tooth sites with bleeding observed immediately on probing or within 30 seconds of probing.

  4. Mean BI (Overall) at Weeks 1, 4, 12 and 24

    Time frame: Weeks 1, 4, 12 and 24

    The BI is an invasive assessment of gingival bleeding. BI will be assessed for all evaluable surfaces of the facial and lingual/palatal gingiva, six sites per tooth. The probe will be inserted approximately 1 mm into the gingival sulcus and moved around the tooth from the distal interproximal area to the mesial interproximal area, gently stretching the gingival epithelium. Gingival bleeding will be scored on a 3-points scale with scores ranging from 0 to 2, where 0=Absence of bleeding on probing, 1=Bleeding observed within 30 seconds of probing, 2=Bleeding observed immediately on probing. Mean BI will be calculated by taking the average over all tooth sites assessed for a participant. Lower score indicates improvement in the symptoms.

  5. Mean BI (Interproximal) at Weeks 1, 4, 12 and 24

    Time frame: Weeks 1, 4, 12 and 24

    The BI is an invasive assessment of gingival bleeding. BI will be assessed for all evaluable surfaces of the facial and lingual/palatal gingiva, six sites per tooth. The probe will be inserted approximately 1 mm into the gingival sulcus and moved around the tooth from the distal interproximal area to the mesial interproximal area, gently stretching the gingival epithelium. Gingival bleeding will be scored on a 3-points scale with scores ranging from 0 to 2, where 0=Absence of bleeding on probing, 1=Bleeding observed within 30 seconds of probing, 2=Bleeding observed immediately on probing. Mean BI will be calculated by taking the average over all tooth sites assessed for a participant. Lower score indicates improvement in the symptoms.

  6. Mean Modified Gingival Index (MGI) (Overall) at Weeks 1, 4, 12 and 24

    Time frame: Weeks 1, 4, 12 and 24

    The MGI assessment is a non-invasive evaluation which focuses on the visual symptoms of gingivitis (for example, redness, texture, edema). The MGI will be assessed on the buccal and lingual marginal gingiva and interdental papillae of all scorable teeth. Three scores will be recorded buccally/labially and three scores lingually/palatally using a 5-point scale ranging from 0 to 4, where 0 = Absence of inflammation, 1= Mild inflammation: slight change in color, little change in texture of any portion of the marginal or papillary gingival unit, 2=Mild inflammation: criteria as [1] but involving the entire marginal or papillary gingival unit, 3=Moderate inflammation: glazing, redness, edema, and/or hypertrophy of the marginal or papillary gingival unit, 4=Severe inflammation: marked redness, edema and/or hypertrophy of the marginal or papillary gingival unit, spontaneous bleeding, congestion, or ulceration. Lower score indicates improvement in the symptoms.

  7. Mean MGI (Interproximal) at Weeks 1, 4, 12 and 24

    Time frame: Weeks 1, 4, 12 and 24

    The MGI assessment is a non-invasive evaluation which focuses on the visual symptoms of gingivitis (for example, redness, texture, edema). The MGI will be assessed on the buccal and lingual marginal gingiva and interdental papillae of all scorable teeth. Three scores will be recorded buccally/labially and three scores lingually/palatally using a 5-point scale ranging from 0 to 4, where 0 = Absence of inflammation, 1= Mild inflammation: slight change in color, little change in texture of any portion of the marginal or papillary gingival unit, 2=Mild inflammation: criteria as [1] but involving the entire marginal or papillary gingival unit, 3=Moderate inflammation: glazing, redness, edema, and/or hypertrophy of the marginal or papillary gingival unit, 4=Severe inflammation: marked redness, edema and/or hypertrophy of the marginal or papillary gingival unit, spontaneous bleeding, congestion, or ulceration. Lower score indicates improvement in the symptoms.

  8. Mean Turesky Plaque Index (TPI) (Overall) at Weeks 1, 4, 12 and 24

    Time frame: Weeks 1, 4, 12 and 24

    TPI will be used to assess plaque on all gradable teeth. The plaque will first be disclosed using a plaque disclosing dye solution. The TPI will be assessed on the facial and lingual surfaces of each scorable tooth. Three scores will be recorded buccally/labially and three scores lingually/palatally. Disclosed plaque will be scored on a scale ranging from 0-6, where 0=No plaque, 1=Separate flecks of plaque at the cervical margin, 2=Thin continuous band of plaque (up to 1 mm) at the cervical margin, 3=Band of plaque wider than 1 mm but covering less than (<)1/3 of the tooth surface, 4=Plaque covering greater than or equal to (>=)1/3 but <2/3 of the tooth surface, 5=Plaque covering >=2/3 of the tooth surface. Lower score indicates improvement in the symptoms.

  9. Mean TPI (Interproximal) at Weeks 1, 4, 12 and 24

    Time frame: Weeks 1, 4, 12 and 24

    TPI will be used to assess plaque on all gradable teeth. The plaque will first be disclosed using a plaque disclosing dye solution. The TPI will be assessed on the facial and lingual surfaces of each scorable tooth. Three scores will be recorded buccally/labially and three scores lingually/palatally. Disclosed plaque will be scored on a scale ranging from 0-6, where 0=No plaque, 1=Separate flecks of plaque at the cervical margin, 2=Thin continuous band of plaque (up to 1 mm) at the cervical margin, 3=Band of plaque wider than 1 mm but covering <1/3 of the tooth surface, 4=Plaque covering >=1/3 but <2/3 of the tooth surface, 5=Plaque covering >=2/3 of the tooth surface. Lower score indicates improvement in the symptoms.

  10. Change in Mean TPI From Pre to Post Single Brush at Baseline

    Time frame: Pre to Post Brushing at Baseline

    TPI will be used to assess plaque on all gradable teeth. The plaque will first be disclosed using a plaque disclosing dye solution. The TPI will be assessed on the facial and lingual surfaces of each scorable tooth. Three scores will be recorded buccally/labially and three scores lingually/palatally. Disclosed plaque will be scored on a scale ranging from 0-6, where 0=No plaque, 1=Separate flecks of plaque at the cervical margin, 2=Thin continuous band of plaque (up to 1 mm) at the cervical margin, 3=Band of plaque wider than 1 mm but covering <1/3 of the tooth surface, 4=Plaque covering >=1/3 but <2/3 of the tooth surface, 5=Plaque covering >=2/3 of the tooth surface. Lower score indicates improvement in the symptoms. Change in TPI will be calculated by subtracting pre brushing TPI score from post brushing TPI score at Baseline.

Study contacts

Contact information is provided by the study sponsor or research team.

Haleon Response Center

CONTACT

[email protected]

+441932959500

Sponsors and collaborators

Lead sponsor

HALEON

Industry

Registry information

Official study title

A 24-Week, Randomised, Controlled, Examiner-blind, Clinical Study to Evaluate the Efficacy of an Experimental Stannous Fluoride Dentifrice in Improving Gingival Health and Reducing Plaque Accumulation

Important dates

Study start
2025
Primary completion
2026
Study completion
2026
First posted
Nov 28, 2025
Registry last updated
Dec 19, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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