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Clinical Efficacy of a Toothpaste on Hypersensitivity Reduction (Yeaple)

This study has been completed.
ClinicalTrials.gov Identifier:
First Posted: December 29, 2009
Last Update Posted: December 10, 2013
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by (Responsible Party):
Colgate Palmolive
Tooth sensitivity reduction after dentifrices use

Condition Intervention
Hypersensitivity Device: Arginine/Calcium Carbonate Device: Mint Prophy paste - Fluoride free

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
Official Title: Clinical Efficacy of a Toothpaste on Hypersensitivity Reduction

Resource links provided by NLM:

Further study details as provided by Colgate Palmolive:

Primary Outcome Measures:
  • Tooth Hypersensitity to Touch Stimuli (Tactile) [ Time Frame: 12 weeks (Final) ]
    Units on a scale:Measured with an electronic force sensing probe(Yeaple Probe):10, 20, 30, 40,up to 50 grams of force are applied to hypersensitive tooth until pain is felt. This calibrated instrument measures grams of force applied to each tooth before pain is felt. This data is recorded as the hypersensitivity score. The lower the score, the higher the hypersensitivity.Changes in this score to potentially painful stimulus are determined based on how many grams of force can be applied before the subject reports feeling pain. Grams of force is therefore the unit measurement for sensitivity

  • Tooth Hypersensivity Stimuli to Air [ Time Frame: 12 weeks (Final) ]
    Units on a scale using Schiff Cold Air Sensitivity Scale. Response to a constant (duration, pressure, temperature, distance from target) jet of air applied to a hypersensitive tooth. According to this analog scale hypersensitivity scores for the stimulated tooth is 0, 1, 2 or 3(The lower the score, the lower the hypersensitivity). 0=No subject response to stimulus, 1=responds but will continue, 2=responds and moves or requests discontinuation, 3=Painful response to stimulus, discontinuation requested.

Enrollment: 79
Study Start Date: May 2008
Study Completion Date: August 2008
Primary Completion Date: August 2008 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Placebo Comparator: Nupro C Prophylaxis paste
Fluoride Free
Device: Mint Prophy paste - Fluoride free
one application
Other Name: Nupro C Prophylaxis paste - Fluoride free
Experimental: ProClude Prophylaxis paste
Device: Arginine/Calcium Carbonate
One application


Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 70 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Male and female subjects, ages 18-70, inclusive.
  • Availability for the three month duration of the study.
  • Two sensitive teeth, which must be anterior to the molars, and demonstrate cervical erosion/abrasion or gingival recession.
  • Qualifying response to tactile stimuli (Yeaple probe) as defined by a score between 10-50gms. of force.
  • Qualifying response to the air blast stimuli as defined by a score of 2 or 3 on the Schiff Cold Air Sensitivity Scale.
  • Subjects need to satisfy the qualifying response to stimuli for both the parameters assessed (tactile or air) on two teeth to be entered into the study.
  • Good general health with no known allergies to products being tested.
  • Use of a non-desensitizing dentifrice for three months prior to entry into the study.
  • Signed Informed Consent Form.

Exclusion Criteria:

  • Gross oral pathology, chronic disease, or history of allergy to test products.
  • Advanced periodontal disease or treatment for periodontal disease (including surgery) within the past twelve months.
  • Sensitive teeth with mobility greater than one.
  • Teeth with extensive/defective restorations (including prosthetic crowns), suspected pulpitis, caries, cracked enamel, or used as abutments for removable partial dentures.
  • Subjects that began to take anticonvulsants, antihistamines, antidepressants, sedatives, tranquilizers, anti-inflammatory drugs, or daily analgesics within one month prior to the start of the study or who have to start taking these during the course of the study.
  • Participation in a desensitizing dentifrice study or regular use of a desensitizing dentifrice within the past three months.
  • Current participation in any other clinical study.
  • Pregnant or lactating subjects.
  • Allergies to oral care products, personal care consumer products, or their ingredients.
  • Medical condition which prohibits not eating/drinking for 4 hours.
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01040169

United States, California
Jacobsen Dental Clinic
San Francisco, California, United States, 94115
Sponsors and Collaborators
Colgate Palmolive
Principal Investigator: Thomas Schiff, DMD
  More Information

Responsible Party: Colgate Palmolive
ClinicalTrials.gov Identifier: NCT01040169     History of Changes
Other Study ID Numbers: CRO-0308-SF-PROC-SEN-ED
First Submitted: September 27, 2008
First Posted: December 29, 2009
Results First Submitted: September 27, 2008
Results First Posted: December 29, 2009
Last Update Posted: December 10, 2013
Last Verified: November 2013

Additional relevant MeSH terms:
Immune System Diseases
Calcium Carbonate
Cariostatic Agents
Protective Agents
Physiological Effects of Drugs
Molecular Mechanisms of Pharmacological Action
Gastrointestinal Agents