Test on a New Experimental Mouth Rinse for Relieving Tooth Sensitivity

Dentin Sensitivity Clinical Trial

Official title:

Assessment of a Potassium Oxalate Containing Formulation for the Relief of Dentinal Hypersensitivity

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT02113579
• Other study ID #: KOXDHY0009
• Status: Completed
• Phase: N/A
• First received: April 8, 2014
• Last updated: May 26, 2015
• Start date: March 2014
• Est. completion date: May 2014

Study information

• Verified date: May 2015
• Source: Johnson & Johnson Consumer and Personal Products Worldwide
• Contact: n/a
• Is FDA regulated: No
• Health authority: United States: Food and Drug Administration
• Study type: Interventional

Clinical Trial Summary

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 participants, and check for sensitive teeth.

During the first 2 weeks, participants will brush their teeth 2 times a day with the fluoride toothpaste provided.

Then, if they qualify to continue in the study, participants will be assigned to one of two treatment groups for the last 4 weeks. Both groups will use assigned toothpaste currently sold on the market. Both groups will each have an investigative mouth rinse to use as well. Participants will have an equal chance of being assigned to any one of the three groups.

For the next 4 weeks, participants will use their assigned products according to the directions provided. At Visit 1, participants will be supervised while they brush their teeth to ensure they understand the directions. They will also have supervised use of the products at Visit 2.

Results will be analyzed to assess whether the mouthwashes help to reduce tooth sensitivity during the study.

Description:

This study will consist of run-in and treatment phases. To qualify for the study, participants 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 participants will use a sodium fluoride dentifrice. At the start of the first phase, participants 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.

Participants 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. Participants who continue to qualify through Baseline will be randomly assigned to one of two treatment groups.

During the four-week treatment period, all participants will brush their teeth twice daily for at least one minute in their usual manner, with their assigned toothpaste. After brushing, participants will rinse with water, and then rinse with 10 mL of their assigned experimental mouth rinse for 60 seconds.

The study duration is approximately six weeks with each participant visiting the clinical site four times.

Adverse events will be observed and collected by querying each participant at each visit for new or continuing symptoms.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 375
• Est. completion date: May 2014
• Est. primary completion date: May 2014
• Accepts healthy volunteers: No
• Gender: Both
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Males and females at least 18 years of age in 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 study

• Females of childbearing potential must be using a medically-acceptable method of birth control for at least one month prior to Visit 1 and agree to continue using this method during their participation in the study. Acceptable methods for this study include:

• Abstinence

• Birth control pills, patches, vaginal rings, implants or injections

• Intrauterine device

• Double barrier method (condom/diaphragm or cervical cap with spermicide)

• Bilateral tubal ligation

• Hysterectomy

• Ovariectomy

• Male partner vasectomy

• Willingness to use the assigned products according to instructions, availability for appointments, and likelihood of completing the clinical study.

• A minimum of 2 natural premolars, canines, and/or incisors teeth with decay-free scorable facial/buccal surfaces which must present cervical abrasion, and/or erosion and/or gingival recession.

• A minimum of two eligible teeth (premolars, canines and/or incisors) with a Screening (-2 weeks Baseline) and Baseline cold air stimulus Visual Analogue Scale (VAS) score of 40 - 80 mm on a 100 mm VAS scale, tactile sensitivity score between 10 - 30 grams after application of the Yeaple probe and a tactile (Yeaple probe) VAS of 40 -80 mm on a 100 mm VAS scale.

• No more than two eligible teeth per quadrant each separated by 2 other teeth must be selected.

• Absence of significant oral soft tissue pathology, based on the dentist's visual examination and at the discretion of the investigator.

• Adequate oral hygiene (i.e. brush teeth daily and exhibit no signs of oral neglect).

• Absence of severe marginal gingivitis, moderate/advanced periodontitis (ADA Type III, IV) based on a clinical examination and discretion of the Investigator.

• Absence of extensive absence of extensive calculus above the gum line.

Exclusion Criteria:

• Volunteers who report history or presence of kidney disorders, kidney stones, have celiac disease, inflammatory bowel disease (ulcerative colitis or Crohn's disease), chronic pancreatitis, have had intestinal or weight-loss surgery, or if have stomach or intestinal problems that keep them from absorbing certain foods or nutrients.

• Volunteers with eating disorders, uncontrolled Gastroesophageal reflux disease GERD or Acid Reflux, excessive dietary or environmental exposure to acids, or other systemic conditions that are predisposing to dentinal hypersensitivity.

• Volunteers with chronic medical debilitating disease associated with constant or intermittent episodes of daily pain.

• Long-term daily use (= 7 consecutive days) of analgesics and any other drugs that at the discretion of the Investigator would compromise the response of the hypersensitivity assessments.

• Volunteers who have been using any home-care bleaching, whitening products or have had a professional bleaching treatment within 4 weeks of the Screening visit.

• Use of desensitizing agents whether prescribed or over-the-counter within eight weeks prior to screening visit (any sensitivity toothpastes such as Crest Sensitivity, Sensodyne, Crest Pro-Health, Colgate Sensitivity Relief, any mouthwash and oral care products used for the treatment of dentinal hypersensitivity).

• Volunteers who during the study will receive dental treatment which may affect their dentinal hypersensitivity condition (i.e., oral prophylaxis). Emergency treatment will be allowed.

• Those with a known allergy to study products' ingredients.

• Those requiring antibiotic premedication prior to invasive dental procedures.

• Participation in a dental clinical study involving oral care products within the past 30 days.

• Self reported pregnancy or lactation (this criterion is due to oral tissue changes related to pregnancy and nursing which can affect interpretation of study results)

• Teeth that are grossly carious, orthodontically banded, abutment teeth for fixed or removable prostheses, crowned teeth, or third molars will not be included in the study.

• Periodontal surgery and orthodontic treatment within previous 3 months.

• Extensive restorative treatment (i.e. extensively restored teeth or teeth with restoration(s) extending into the test area) at the discretion of the Investigator.

• Dental prophylaxis within 2 weeks prior to Screening visit.

• Teeth or periodontium with pathology or defect likely to cause pain.

• Teeth with clinical mobility > grade 1.

• Relative, partner or staff of any clinical research site personnel

• Participation in any clinical study within 30 days of Visit 1.

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Outcomes Assessor), Primary Purpose: Treatment

Related Conditions & MeSH terms

• Dentin Sensitivity

Intervention

Device:
• Experimental Mouth Rinse 12027-033
After brushing for at least one-minute using at least one-inch strip of toothpaste, rinse with water and then rinse 60 seconds with 10mL of mouth rinse, twice daily.

Other:
• Placebo Mouth Rinse
After brushing for at least one-minute using at least one-inch strip of toothpaste, rinse with water and then rinse 60 seconds with 10mL of mouth rinse, twice daily.

Locations

Country	Name	City	State
United States	Salus Research, Inc.	Fort Wayne	Indiana
United States	Silverstone	Las Vegas	Nevada

Sponsors (1)

Lead Sponsor	Collaborator
Johnson & Johnson Consumer and Personal Products Worldwide

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Percentage of Subjects With Reduction From Baseline by at Least 30% in Mean Cold Air VAS Stimulus 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. A participant was considered an individual success if the participant's mean cold air stimulus VAS score at Week 4 was at least 30% lower than the participant's mean baseline cold air stimulus VAS score.	4 Weeks	No
Secondary	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	No
Secondary	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, at each visit.	4 Weeks	No
Secondary	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	No
Secondary	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, at each visit.	2 Weeks	No
Secondary	Percentage of Subjects With Reduction From Baseline by at Least 30% in Mean Cold Air VAS Stimulus 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. A participant was considered an individual success if the participant's mean cold air stimulus VAS score at Week 2 was at least 30% lower than the participant's mean baseline cold air stimulus VAS score.	2 Weeks	No
Secondary	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	No
Secondary	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	No
Secondary	Global Subjective VAS Score at Week 2	At each visit, participants rated their perception of the pain/discomfort experienced 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. Participants were instructed as follows:"Please rate the intensity of the pain/discomfort you have experienced in the last two weeks when drinking cold/hot beverages and/or foods, eating sweet and sour foods, breathing cold air, brushing your teeth or performing any habits/behaviors that elicit your dentinal hypersensitivity pain/discomfort since you have been using the product." The dental recorder measured the length of the line from 0 to the participant's line and recorded the VAS score in mm.	2 Weeks	No
Secondary	Global Subjective VAS Score at Week 4	At each visit, participants rated their perception of the pain/discomfort experienced 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. Participants were instructed as follows:"Please rate the intensity of the pain/discomfort you have experienced in the last two weeks when drinking cold/hot beverages and/or foods, eating sweet and sour foods, breathing cold air, brushing your teeth or performing any habits/behaviors that elicit your dentinal hypersensitivity pain/discomfort since you have been using the product." The dental recorder measured the length of the line from 0 to the participant's line and recorded the VAS score in mm.	4 Weeks	No