A Study to Assess Efficacy of an Experimental Oral Rinse in Providing Long Term Relief From Dentinal Hypersensitivity

NCT03238352 | Completed Phase 2 Results FDA Drug FDA Device

• 1 other identifier: 207656
• Study Type: interventional
• Target: 89
• Locations: 1 country
• Sites: 1

Brief Summary

To investigate the efficacy of an experimental oral rinse, containing 1.5% potassium oxalate (KOX) and 0 parts per million (ppm) fluoride in relieving dentine hypersensitivity (DH) after 8 weeks use compared with a placebo oral rinse and a commercialized fluoride oral rinse.

Conditions

Dentin Sensitivity

Outcome Measures

Primary Outcomes (1)

• Change From Baseline in Schiff Sensitivity Score

  The examiner assessed the participant's response to an evaporative air stimulus for each tooth using the Schiff Sensitivity Scale which was scored as follows - 0: Participant did not respond to air stimulation; 1: Participant responded to air stimulus but does not request discontinuation of stimulus; 2: Participant responded to air stimulus and requested discontinuation or moves from stimulus; 3: Participant responded to stimulus, considered stimulus to be painful, and requested discontinuation of the stimulus. A reduction in Schiff Sensitivity score will be indicative of an improvement in sensitivity.

  Week 8

Secondary Outcomes (1)

• Change From Baseline in Tactile Threshold

  Week 8

Study Arms (3)

Test Product

EXPERIMENTAL

Participants will rinse twice daily (morning and evening) with 10 milliliters (mL) of oral rinse for 60 timed seconds and expectorate. No further rinsing with water will be permitted after use of the oral rinse.

Device: Potassium oxalate

Negative Control

OTHER

Participants will rinse twice daily (morning and evening) with 10 mL of oral rinse for 60 timed seconds and expectorate. No further rinsing with water will be permitted after use of the oral rinse.

Drug: Sodium fluoride

Placebo

PLACEBO COMPARATOR

Participants will rinse twice daily (morning and evening) with 10 mL of oral rinse for 60 timed seconds and expectorate. No further rinsing with water will be permitted after use of the oral rinse.

Other: Placebo

Interventions

Potassium oxalate DEVICE

Oral rinse containing 1.5 percent (%) KOX and 0 ppm fluoride

Test Product

Sodium fluoride DRUG

Oral rinse containing 0.02% weight by weight (w/w) sodium fluoride (NaF)

Negative Control

Placebo OTHER

Oral rinse containing 0% KOX and 0 ppm fluoride

Placebo

Eligibility Criteria

• Age: 18 Years - 65 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Demonstrates understanding of the study procedures, restrictions and willingness to participate as evidenced by voluntary written informed consent and has received a signed and dated copy of the informed consent form.
• Good general and mental health with, in the opinion of the investigator or medically qualified designee: a) No clinically significant and relevant abnormalities in medical history or oral Examination and b) Absence of any condition that would impact on the participant's safety or wellbeing or affect the individual's ability to understand and follow study procedures and requirements.
• Dental Health at Screening: a) Self-reported history of DH lasting more than six months but not more than 10 Years, b) Minimum of 20 natural teeth, c) Minimum of 4 accessible non-adjacent teeth (incisors, canines, premolars), preferably in different quadrants, that meet all of the following criteria: Signs of facial/cervical gingival recession and/or signs of erosion or abrasion (EAR), Tooth with MGI score =0 adjacent to the test area (exposed dentine) only and a clinical mobility of ≤1 and tooth with signs of sensitivity measured by qualifying evaporative air assessment (Schiff sensitivity score ≥ 2).
• Dental Health at Baseline: Minimum of two, non-adjacent accessible teeth (incisors, canines, premolars), that meet all of the following criteria: Tooth with signs of sensitivity, measured by qualifying tactile stimulus (Yeaple ≤20g) and evaporative air assessment (Schiff sensitivity score ≥ 2.
• Females of childbearing potential who are, in the opinion of the investigator, practicing a reliable method of contraception. Adequate contraception is defined as abstinence, oral contraceptive, either combined or progestogen alone or injectable progestogen or implants of levonorgestrel or estrogenic vaginal ring or percutaneous contraceptive patches or intrauterine device or intrauterine system or double barrier method (condom or occlusive cap \[diaphragm or cervical vault caps\] plus spermicidal agent \[foam, gel, film, cream, suppository\]) or male partner sterilization prior to the female participant's entry into the study, and this male is the sole partner for that participant).
• Participant will be current and regular (twice daily), users of an over the counter (OTC) Monograph or cosmetic oral rinse.
• Participant will be cell phone owners so that they can contactable by SMS.

You may not qualify if:

• A woman who is known to be pregnant or who is intending to become pregnant over the duration of the study.
• A woman who is breast-feeding.
• Known or suspected intolerance or hypersensitivity to the study materials (or closely related compounds) or any of their stated ingredients.
• Participation in another clinical study (including cosmetic studies) or receipt of an investigational drug within 30 days of the screening visit or previous participation in this study.
• Recent history (within the last year) of alcohol or other substance abuse.
• An employee of the sponsor or the study site or members of their immediate family.
• 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 xerostomia.
• Dental prophylaxis within 4 weeks of Screening.
• Tongue or lip piercing.
• Desensitizing treatment within 8 weeks of Screening (professional sensitivity, treatments and non-dentifrice sensitivity treatments).
• Gross periodontal disease, treatment of periodontal disease (including surgery) within 12 months of Screening, scaling or root planning within 3 months of Screening.
• Teeth bleaching and any teeth whitening procedures within 8 weeks of Screening.
• Tooth with evidence of current or recent caries, or reported treatment of decay within 12 months of Screening.
• Tooth with exposed dentine but with deep, defective or facial restorations, teeth used as abutments for fixed or removable partial dentures, dental implants, teeth with full crowns or veneers, orthodontic bands or cracked enamel. Sensitive teeth with contributing aetiologies other than erosion, abrasion or recession of exposed dentine.

Sponsors & Collaborators

• GlaxoSmithKline: lead

Study Sites (1)

GSK Investigational Site

Fort Wayne, Indiana, 46825, United States

Location

MeSH Terms

Conditions

Dentin Sensitivity

Interventions

Sodium Fluoride

Condition Hierarchy (Ancestors)

Tooth Diseases; Stomatognathic Diseases

Intervention Hierarchy (Ancestors)

Fluorides; Hydrofluoric Acid; Fluorine Compounds; Inorganic Chemicals; Sodium Compounds; Cariostatic Agents; Biomedical and Dental Materials; Manufactured Materials; Technology, Industry, and Agriculture

Results Point of Contact

• Title: GSK Response Center
• Organization: GlaxoSmithKline

GSKClinicalSupportHD@gsk.com

866-435-7343

Study Officials

• GSK Clinical Trials

  GlaxoSmithKline

  STUDY DIRECTOR

Publication Agreements

• PI is Sponsor Employee: No
• Restriction Type: OTHER
• Restrictive Agreement: Yes

Study Design

• Study Type: interventional
• Phase: phase 2
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: INVESTIGATOR
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: INDUSTRY
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: July 19, 2017
• First Posted: August 3, 2017
• Study Start: August 7, 2017
• Primary Completion: October 27, 2017
• Study Completion: October 27, 2017
• Last Updated: November 14, 2018
• Results First Posted: November 14, 2018

Record last verified: 2018-10

Locations

US (1)