A Test on a New Experimental Mouth Rinse for Relieving Tooth Sensitivity

Study Overview
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Brief Summary
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This study is for people with sensitive teeth and involves going to the dentist for 4 visits over 6 weeks. At each visit the dentist will look at the mouth, teeth, tongue and gums of subjects, and check for sensitive teeth. During the first 2 weeks, participants will brush their teeth two times a day with the fluoride toothpaste provided. Then, if they qualify to continue in the study, participants will be assigned to a treatment group. All the groups will get toothpaste currently sold on the market, and one group will get a mouthwash with an experimental ingredient to use as well. Subjects will have an equal chance of being assigned to any one of the three groups. For the next 4 weeks, subjects will use their assigned products according to the directions provided. At Visit 1 subjects will be supervised while they brush their teeth to ensure they understand the directions. They will also have supervised use of the product at Visit 2. We will see if the mouthwash helps to reduce tooth sensitivity during the study.

Detailed Description
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This study will consist of run-in and treatment phases. To qualify for the study, subjects must meet the inclusion/exclusion criteria and return tactile sensitivity scores within protocol-specified parameters at both the screening and baseline visits. Run-in will consist of a 2-week period during which subjects will use a sodium fluoride dentifrice. At the start of the first phase, subjects will attend a Screening Visit. They will participate in the informed consent process, complete a medical/dental history, and be evaluated for tactile sensitivity to Yeaple probe and response to a cold air stimulus. Subjects who qualify through screening will begin a run-in period that will last approximately two weeks. The run-in period will be followed by a Baseline visit. Subjects who continue to qualify through Baseline will be randomized to one of three treatment groups. During the four-week treatment period, all subjects will brush their teeth twice daily for at least one minute in their usual manner, with their assigned toothpaste. After brushing, subjects assigned to the mouth rinse group will rinse with water, and then rinse with 10 mL of the experimental mouth rinse for 60 seconds. The study duration is approximately six weeks with each subject visiting the clinical site six times. Adverse events will be observed and collected by querying each subject at each visit for new or continuing symptoms.

Official Title
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Evaluation of an Experimental Mouth Rinse Device for Relieving Dentinal Hypersensitivity

Conditions
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Dentin Sensitivity

Intervention / Treatment
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* Device: Mouth Rinse
* Drug: Fluoride Toothpaste
* Drug: Potassium Nitrate Toothpaste


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Good general and oral health without any known allergy to commercial dental products or cosmetics Evidence of a personally signed and dated informed consent document indicating the subject (or legally acceptable representative) has been informed of all pertinent aspects of the trial Willingness to use the assigned products according to instructions, availability for appointments, and likelihood of completing the clinical trial Dental condition appropriate for inclusion in the trial according to protocol-specified parameters and the professional opinion of the investigator Adequate oral hygiene (i.e. brush teeth daily and exhibit no signs of oral neglect Exclusion Criteria: Medical condition or history, or use of drugs or treatments that could possibly compromise the safety of the research subject or the interpretation of results, per protocol or in the opinion of the investigator Use of home-care bleaching, whitening products or professional bleaching treatment within a protocol-specified time period Use of desensitizing agents within a protocol-specified time period Participation in a dental clinical trial involving oral care products within a protocol-specified time period

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Mouth Rinse<br>Twice daily for 28 days, brush in usual manner for at least one minute using at least a one-inch strip of Fluoride Toothpaste provided. Rinse with water after brushing teeth. Then rinse for 60 seconds with 10 mL of the experimental Mouth Rinse 12027-033 (KOX). | Device: Mouth Rinse<br>* Mouth rinse 12027-033 used twice daily for 28 days after brushing.<br>Drug: Fluoride Toothpaste<br>* Fluoride Toothpaste used daily for 28 days.<br>* Other names: Colgate® Cavity Protection Regular;|
| Active Comparator: Fluoride Toothpaste<br>Twice daily for 28 days, brush in usual manner for at least one minute using at least a one-inch strip of the Fluoride Toothpaste (NEG) provided. | Drug: Fluoride Toothpaste<br>* Fluoride Toothpaste used daily for 28 days.<br>* Other names: Colgate® Cavity Protection Regular;|
| Active Comparator: Potassium Nitrate Toothpaste<br>Twice daily for 28 days, brush in usual manner for at least one minute using at least a one-inch strip of the Potassium Nitrate Toothpaste (POS) provided. | Drug: Potassium Nitrate Toothpaste<br>* Potassium Nitrate Toothpaste used daily for 28 days.<br>* Other names: Sensodyne® Original;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Mean Tactile Sensitivity Score at Week 4 | Tooth sensitivity was measured using a Yeaple probe. The force at which discomfort was felt by the participant was recorded on a scale of 10-80 grams. The score for each participant was calculated by averaging the scores for all study teeth for that participant. | 4 weeks | 
| Mean Tactile Sensitivity Score at Week 2 | Tooth sensitivity was measured using a Yeaple probe. The force at which discomfort was felt by the participant was recorded on a scale of 10-80 grams. The score for each participant was calculated by averaging the scores for all study teeth for that participant. | 2 weeks | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Mean Tactile Sensitivity VAS Score at Week 2 | Tooth sensitivity was measured using a Visual Analogue Scale (VAS). At each visit, participants rated their perception of the pain/discomfort experienced from the Yeaple probe by marking a single vertical line on a VAS scale from 0 to 100 mm, where 0 = No Pain/Discomfort and 100 = Intense Pain/Discomfort. The dental recorder measured the length of the line from 0 to the participant's line and recorded the VAS score in mm. The investigator recorded a VAS score of 0 mm for participants who did not experience discomfort at the maximum force of 80 grams. The score for each participant was calculated by averaging the scores for all study teeth for that participant. | 2 weeks | 
| Mean Tactile Sensitivity VAS Score at Week 4 | Tooth sensitivity was measured using a Visual Analogue Scale (VAS). At each visit, participants rated their perception of the pain/discomfort experienced from the Yeaple probe by marking a single vertical line on a VAS scale from 0 to 100 mm, where 0 = No Pain/Discomfort and 100 = Intense Pain/Discomfort. The dental recorder measured the length of the line from 0 to the participant's line and recorded the VAS score in mm. The investigator recorded a VAS score of 0 mm for participants who did not experience discomfort at the maximum force of 80 grams. The score for each participant was calculated by averaging the scores for all study teeth for that participant. | 4 weeks | 
| Mean Cold Air Stimulus VAS Score at Week 2 | Tooth sensitivity was measured using a Cold Air Stimulus. When being assessed, participants rated their perception of the pain/discomfort experienced when cold air was directed at the exposed root of each tooth by marking a single vertical line on a Visual Analogue Scale (VAS) scale from 0 to 100 mm, where 0 = No Pain/Discomfort and 100 = Intense Pain/Discomfort. The dental recorder measured the length of the line from 0 to the participant's line and recorded the VAS score in mm. The score for each participant was calculated by averaging the scores for all study teeth for that participant. | 2 weeks | 
| Mean Cold Air Stimulus VAS Score at Week 4 | Tooth sensitivity was measured using a Cold Air Stimulus. When being assessed, participants rated their perception of the pain/discomfort experienced when cold air was directed at the exposed root of each tooth by marking a single vertical line on a Visual Analogue Scale (VAS) scale from 0 to 100 mm, where 0 = No Pain/Discomfort and 100 = Intense Pain/Discomfort. The dental recorder measured the length of the line from 0 to the participant's line and recorded the VAS score in mm. The score for each participant was calculated by averaging the scores for all study teeth for that participant. | 4 weeks | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Tooth Sensitivity