Dentinal Hypersensitivity Reduction Efficacy Study

Inclusion Criteria:

• Male and female subjects, ages 18-70, inclusive.

• Availability for the eight-week duration of the study.

• Two sensitive teeth, which must be anterior to the molars, and demonstrate cervicalerosion/abrasion or gingival recession.

• Qualifying response to tactile stimuli (Yeaple probe) as defined by a score between 10-50 gms. of force.

• Qualifying response to the air blast stimuli as defined by a score of 2 or 3 on theSchiff Cold Air Sensitivity Scale.

• Subjects need to satisfy the qualifying response to stimuli for both the parametersassessed (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 thestudy.

• Signed Informed Consent Form.

Exclusion Criteria:

• Gross oral pathology, chronic disease, or history of allergy to test products. 2.Advanced periodontal disease or treatment for periodontal disease (includingsurgery) within the past twelve months.

• Sensitive teeth with a mobility greater than one.

• Teeth with extensive/defective restorations (including prosthetic crowns), suspectedpulpitis, caries, cracked enamel, or used as abutments for removable partialdentures.

• Current use of anticonvulsants, antihistamines, antidepressants, sedatives,tranquilizers, anti-inflammatory drugs, or daily use of analgesics.

• Participation in a desensitizing dentifrice study or regular use of a desensitizingdentifrice 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 theiringredients.

• Medical condition which prohibits not eating/drinking for 4 hours.