Last updated: 03/10/2021 06:30:34
A Study to Investigate the Stain and Plaque Removal Capability of Two Experimental Potassium Nitrate Dentifrices
EudraCT ID
Not applicable
EU CT Number
Not applicable
Trial status
Completed
Completed
Trial overview
Official title: A Randomized, Examiner-blind, Proof of Principal Study to Investigate the Stain and Plaque Removal Capability of Two Experimental 5% Potassium Nitrate Dentifrices in Healthy Subjects with the Propensity for Extrinsic Dental Stain
Trial description: The purpose of this study is to determine whether spherical silica can achieve similar or greater extrinsic dental stain and plaque removal, in comparison to dentifrices containing higher concentrations of standard abrasive silica, and how the addition of 5% sodium tripolyphosphate (STP) enhances cleaning capability.
Primary purpose:
Treatment
Trial design:
Parallel Assignment
Masking:
Double (Investigator, Outcomes Assessor)
Allocation:
Randomized
Primary outcomes:
Change from baseline in overall Macpherson Modification of the Lobene Stain Index (MLSI) at 8 weeks.
Timeframe: Baseline, Week 8 post treatment administration
Secondary outcomes:
Change from baseline in overall MLSI after 8 weeks (Test product 1 versus [vs.] Reference product 1)
Timeframe: Baseline, Week 8 post treatment administration
Change from baseline in overall MLSI after 8 weeks (Test product 2 vs. Reference product 2)
Timeframe: Baseline, Week 8 post treatment administration
Interventions:
Drug: 5% KNO3 / 0.2542% NaF dentifrice with 0.5% spherical silica
Drug: 5% KNO3 / 0.2542% NaF dentifrice with 1% spherical silica and 5% STP
Drug: 5% KNO3 / 0.2542% NaF dentifrice with 6% abrasive silica
Drug: 5% KNO3 / 0.2543% NaF dentifrice with 16% abrasive silica and 5% STP
Enrollment:
123
Observational study model:
Not applicable
Primary completion date:
2017-02-12
Time perspective:
Not applicable
Clinical publications:
Mason S, Young S, Araga M, Butler A, Lucas R, Milleman JL, Milleman KR. Stain control with two experimental dentin hypersensitivity toothpastes containing spherical silica: a randomised, early-phase development study. BDJ Open. 2019 Jun 6;5:8. doi: 10.1038/s41405-019-0016-x. eCollection 2019. PMID:31231545
Medical condition
Oral Hygiene
Product
GSK1562496, potassium nitrate, potassium nitrate/sodium fluoride, potassium nitrate/sodium fluoride/sodium tripolyphosphate, sodium fluoride
Collaborators
Not applicable
Study date(s)
September 2017 to December 2017
Type
Interventional
Phase
2
Participation criteria
Sex
Female & Male
Age
18 - 65 years
Accepts healthy volunteers
Yes
- Evidence of a personally signed and dated informed consent document indicating that the participant has been informed of all pertinent aspects of the study before any assessment is performed.
- Male and female participants who, at the time of screening, are between the ages of 18 and 65 years, inclusive.
- Participants who are investigational site staff members directly involved in the conduct of the study and their family members, site staff members otherwise supervised by the investigator, or participants who are GSK employees directly involved in the conduct of the study.
- Participation in another clinical study or receipt of an investigational drug(s) within 30 days prior to study entry and/or during study participation.
Inclusion and exclusion criteria
Inclusion criteria:
- Evidence of a personally signed and dated informed consent document indicating that the participant has been informed of all pertinent aspects of the study before any assessment is performed.
- Male and female participants who, at the time of screening, are between the ages of 18 and 65 years, inclusive.
- Participants who are willing and able to comply with scheduled visits, treatment plan, and other study procedures.
- Good general and mental health with, in the opinion of the investigator or medically qualified designee no clinically significant and relevant abnormalities of medical history or oral examination which could impact study outcomes.
- Good general and mental health with, in the opinion of the investigator or medically qualified designee an absence of any condition that would impact on participant safety or wellbeing, or affect the participant’s ability to understand and follow study procedures and requirements.
- In the opinion of the investigator or medically qualified designee, at screening, participants must have good oral health.
- In the opinion of the investigator or medically qualified designee, at screening, participants must have at least 20 natural teeth including the 12 anterior teeth, gradable for Turesky Plaque Index (TPI) (Gradable teeth are those where restorative materials cover less than 25% of the tooth surface to be graded).
- In the opinion of the investigator or medically qualified designee, at screening, participants must have the facial surfaces of at least 4 of the anterior teeth, gradable for the MLSI.
- In the opinion of the investigator or medically qualified designee, at screening, participants must have the presence of extrinsic dental stain (judged to be formed due to dietary factors) on the facial surfaces of the anterior teeth, as determined from a visual MLSI stain assessment.
- In the opinion of the investigator, at Visit 2, participants must have a sufficient level of extrinsic dental stain (in the opinion of the examiner) on the facial surfaces of the scorable anterior (maxillary and mandibular) teeth.
- At Visit 3, a minimum overall pre-brushing plaque score (TPI) of ≥2.0.
Exclusion criteria:
- Participants who are investigational site staff members directly involved in the conduct of the study and their family members, site staff members otherwise supervised by the investigator, or participants who are GSK employees directly involved in the conduct of the study.
- Participation in another clinical study or receipt of an investigational drug(s) within 30 days prior to study entry and/or during study participation.
- Participants who have previously been enrolled in this study.
- Acute or chronic medical or psychiatric condition or laboratory abnormality that may increase the risk associated with study participation or investigational product administration or may interfere with the interpretation of study results and, in the judgment of the investigator, would make the participant inappropriate for entry into this study.
- Any condition which, in the opinion of the investigator, causes xerostomia.
- Pregnant female participants.
- Breastfeeding female participants.
- Known or suspected intolerance or hypersensitivity to the study materials (or closely related compounds) or any of their stated ingredients.
- Unwilling or unable to comply with the lifestyle guidelines described in this protocol.
- Recent history (within the last year) of alcohol or other substance abuse.
- Participant is unwilling to abstain from tobacco or nicotine-containing product use (including E-cigarettes) during the treatment evaluation period.
- Participants using the following mouth rinses, or taking the medications listed below: a) Regular use of mouthwashes containing ingredients that are known to impart staining. For example, chlorhexidine, essential oils or cetylpyridinium chloride (CPC). b) Use of a chlorhexidine, essential oil or CPC containing mouthwash within 14 days of Visit 2 or throughout the study. c) Current use of Listerine, or any antimicrobial mouth rinse. d) Use of minocycline, tetracycline or doxycycline within 30 days prior to screening. e) Use of minocycline, tetracycline or doxycycline between the screening and baseline visits. f) Daily doses of a medication and/or traditional/herbal ingredients which, in the opinion of the investigator, may affect study outcomes. For example, drugs or supplements containing metal ions known to impart staining to the enamel.
- Participants who have the following dental exclusions: a) Received a dental prophylaxis within 8 weeks of screening. b) Gross periodontal disease, treatment of periodontal disease (including surgery) within 12 months of screening, scaling or root planning within 3 months of screening. c) Dental conditions / disease requiring immediate treatment. d) Used any professionally dispensed or over the counter bleaching/ whitening products (excluding daily use whitening dentifrices) within the past 3 months.
- Participants who have the following specific dental exclusions for assessment teeth: a) Any tooth which, in the opinion of the investigator, appears to be non-vital based on changes in the intrinsic colour. b) Tooth with evidence of current or recent caries, or reported treatment of decay in 12 months of screening. c) Tooth with exposed dentine which, in the opinion of the investigator, could impact grading of extrinsic dental stain; tooth with deep, defective or facial restorations; tooth used as an abutment for fixed or removable partial dentures; tooth with full crown or veneer, orthodontic bands or cracked enamel. d) Tooth with surface irregularities, discoloration due to trauma, tetracycline stain, restorations, or hypo or hyperplasic areas which, in the opinion of the investigator, would prevent consistent grading of extrinsic dental stain. e) High levels of calculus deposits which might interfere with plaque assessments at the discretion of the investigator. f) Presence of orthodontic bands or appliances, extensive crowns, partial dentures, or fixed retainers.
- Any participant who, in the judgment of the investigator, should not participate in the study.
Trial location(s)
Location
GSK Investigational Site
Fort Wayne, Indiana, United States, 46825
Status
Study Complete
Study documents
Clinical study report
Available language(s): English
Protocol
Available language(s): English
Statistical analysis plan
Available language(s): English
If you wish to request for full study report, please contact - [email protected]
Results overview
Results posted on ClinicalTrials.gov
Recruitment status
Completed
Actual primary completion date
2017-02-12
Actual study completion date
2017-02-12
Plain language summaries
Plain language summaries of clinical trial results for Phase 2-4 clinical trials that were initiated on or after January 2022 will be posted by GSK within one year following study completion.
Additional information about the trial
Participate in clinical trial
Additional information
Stain control with two experimental dentin hypersensitivity toothpastes containing spherical silica: a randomized, early-phase development study
Click hereAccess to clinical trial data by researchers
Visit website