- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01426360
Instant and Lasting Relief Effects of Strontium Chloride/Potassium Nitrate Dentifrice on Dentin Hypersensitivity
A Randomized, Double-blind Clinical Trial to Assess the Instant and Lasting Relief Effects of a Dentifrice Containing 2% Strontium Chloride and 5% Potassium Nitrate on Dentin Hypersensitivity
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
Sichuan
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Chengdu, Sichuan, China, 610041
- the State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, China
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- good oral and general health
- possessing at least two teeth (incisors, cuspids, bicuspids and first molars with exposed cervical dentin) with hypersensitivity on facial surfaces which satisfied a tactile hypersensitivity stimulus score of 10-50 grams of force (Yeaple probe) and an air blast stimulus score of 2 or 3(Schiff Cold Air Scale)
- provided informed consent and were available for the study duration
Exclusion Criteria:
- progressive periodontitis, with teeth that had extensive restoration, suspected pulpitis, caries, cracked enamel or that were used as abutments for removable partial dentures,
- had hypersensitive teeth with a mobility greater than one
- had received periodontal treatment including surgery during the last year
- had used any other anti-hypersensitivity dentifrice or taken part in any other clinical trial, used any desensitizing agents during the last three months, or allergic to the ingredients of the dentifrices were excluded
- pregnant or breastfeeding women
- had taken the following drugs during the last month: anticonvulsants, antihistamines, antidepressants, sedatives, tranquilizers, anti-inflammatory drugs or daily analgesics
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: strontium chloride/potassium nitrate dentifrice
|
use the dentifrice to brush teeth twice daily for 3 days
|
Placebo Comparator: control dentifrice
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use the dentifrice to brush teeth twice a day for one minute for 3 days
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Tactile Hypersensitivity Scores Immediately After Topical Dentifrice Use
Time Frame: immediately after dentifrice use
|
Immediately after dentifice use, tactile hypersensitivity assessments were done using an Electronic Force Sensing Probe (Yeaple Probe Model 200A, Xinix Research Inc., USA).
Scores were recorded in terms of a quantified force applied by a #19 explorer tip.
After presetting the probe to 10 grams, the tip of the probe was run across the exposed dentin perpendicular to the examined surface.
Subsequent passes were made, each time the applied force was increased by 10 grams, until the subject indicated that he/she was experiencing discomfort, or until the maximum force of 50 grams had been reached.
|
immediately after dentifrice use
|
Air Blast Hypersensitivity Scores Immediately After Topical Dentifrice Use
Time Frame: immediately after dentifrice use
|
The tooth was isolated. Air was delivered from a standard dental unit air syringe and directed at the exposed buccal surface of the hypersensitive tooth for 1 second. The Schiff Cold Air Sensitivity Scale was used to assess the subjects' response. 0 - Subject does not respond to air stimulus;
|
immediately after dentifrice use
|
Tactile Hypersensitivity Score After 3 Days of Dentifrice Use
Time Frame: 3 days after dentifrice use
|
After 3 days, tactile hypersensitivity assessments were done using an Electronic Force Sensing Probe (Yeaple Probe Model 200A, Xinix Research Inc., USA).
Scores were recorded in terms of a quantified, reproducible force applied by a #19 explorer tip.
After presetting the probe to 10 grams, the tip of the probe was run across the exposed dentin perpendicular to the examined surface.
Subsequent passes were made, each time the applied force was increased by 10 grams, until the subject indicated that he/she was experiencing discomfort, or until the maximum force of 50 grams had been reached.
|
3 days after dentifrice use
|
Air Blast Hypersensitivity Score 3 Days After Dentifrice Use
Time Frame: 3 days after dentifrice use
|
After 3 days, tooth was isolated. Air was delivered from a standard dental unit air syringe and directed at exposed buccal surface of the hypersensitive tooth for 1 second. The Schiff Cold Air Sensitivity Scale was used to assess the subjects' response. 0 - Subject does not respond to air stimulus;
|
3 days after dentifrice use
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Hongchun Liu, Ph.D., Department of Preventive Dentistry,Guanghua College of Stomatology,Sun Yat-sen University
Publications and helpful links
General Publications
- Fu Y, Li X, Que K, Wang M, Hu D, Mateo LR, DeVizio W, Zhang YP. Instant dentin hypersensitivity relief of a new desensitizing dentifrice containing 8.0% arginine, a high cleaning calcium carbonate system and 1450 ppm fluoride: a 3-day clinical study in Chengdu, China. Am J Dent. 2010 May;23 Spec No A:20A-27A.
- Liu H, Hu D. Efficacy of a commercial dentifrice containing 2% strontium chloride and 5% potassium nitrate for dentin hypersensitivity: a 3-day clinical study in adults in China. Clin Ther. 2012 Mar;34(3):614-22. doi: 10.1016/j.clinthera.2012.01.027. Epub 2012 Mar 3.
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- DH-38
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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