NCT01827670 - Investigating the Efficacy of a Dentifrice in Providing Long Term Relief From Dentinal Hypersensitivity | Crick

Overview

Clinical studies have demonstrated long term relief from dentine hypersensitivity with twice daily brushing of a toothpaste containing stannous fluoride in comparison to marketed (negative) controls. The aim of this study is to evaluate the effectiveness of a stannous fluoride dentifrice in the treatment of dentinal hypersensitivity compared to a marketed (negative) control, over a period of 56 days (8 weeks) with twice daily brushing.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Enrollment

119

Conditions

Dentine Hypersensitivity

Interventions

Stannous fluorideDRUG

Test dentifrice containing 0.454% SnF

Sodium monofluorophosphateDRUG

Control dentifrice containing 0.76% w/w Sodium Monofluorophosphate \[1000 parts per million (ppm) fluoride\]

Eligibility

Sex: ALLMin age: 18 YearsMax age: 65 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Participants with self-reported history of dentinal hypersensitivity lasting more than 6 months but not more than 10 years. * Participants with minimum of 20 natural teeth. * At screening, a minimum of two accessible teeth (incisors, canines, premolars) that meet all of the following criteria. 1. Teeth showing signs of facial/cervical gingival recession and/or signs of erosion or abrasion. 2. Teeth with Gingival Index score ≤1 and a clinical mobility of ≤1. 3. Teeth that are determined to be sensitive by the subject following a 1 second air blast to the cervical margin. Exclusion Criteria: * Presence of chronic debilitating disease which, in the opinion of the investigator, could affect study outcomes. * Any condition which, in the opinion of the investigator, causes dry mouth. * Tooth with evidence of current or recent caries, or reported treatment of decay in 12 months of screening. * Participant using of a desensitising dentifrice within 6 weeks of screening

Locations (1)

Salus Research, Inc.

Fort Wayne, Indiana, United States

Outcomes

Primary Outcomes

Mean Change From Baseline in Schiff Sensitivity Score

The examiner conducted the evaporative air sensitivity assessment and scored the subject's response to the sensitivity stimulus using the four-point categorical Schiff Sensitivity Scale (SSS). Score 0 = Subject does not respond to air stimulus Score 1 = Subject responds to air stimulus, but does not request discontinuation of stimulus Score 2 = Subject responds to air stimulus, and requests discontinuation or moves from stimulus Score 3 = Subject responds to air stimulus, considers stimulus to be painful, and requests discontinuation

Time frame: Baseline-Week 8

Secondary Outcomes

Mean Change From Baseline in Schiff Sensitivity Score

The examiner conducted the evaporative air sensitivity assessment and scored the subject's response to the sensitivity stimulus using the four-point categorical Schiff Sensitivity Scale (SSS). Score 0 = Subject does not respond to air stimulus Score 1 = Subject responds to air stimulus, but does not request discontinuation of stimulus Score 2 = Subject responds to air stimulus, and requests discontinuation or moves from stimulus Score 3 = Subject responds to air stimulus, considers stimulus to be painful, and requests discontinuation

Time frame: Baseline-Week 4

Mean Change From Baseline in Tactile Sensitivity

The examiner assessed the tactile sensitivity of eligible teeth using a Yeaple probe. The constant pressure applied by Yeaple probe probe allowed the examiner to vary the force applied to the dentin surface from 10g to an upper threshold of 80g, in increments of 10g. The greater the pressure the participant was able to tolerate, the less sensitive the tooth was considered. Testing began at 10g and increased by 10g, with each successive challenge, until either a "yes" response (pain was elicited) was recorded or the maximum force has been reached.

Time frame: Baseline-Week 8

Mean Change From Baseline in Tactile Sensitivity

The examiner assessed the tactile sensitivity of eligible teeth using a Yeaple probe. The constant pressure applied by Yeaple probe probe allowed the examiner to vary the force applied to the dentin surface from 10g to an upper threshold of 80g, in increments of 10g. The greater the pressure the participant was able to tolerate, the less sensitive the tooth was considered. Testing began at 10g and increased by 10g, with each successive challenge, until either a "yes" response (pain was elicited) was recorded or the maximum force has been reached.