Tooth Erosion Clinical Trial
Official title:
Study to Investigate the Intial Stages of Enamel Erosion in Vivo
Verified date | June 2016 |
Source | GlaxoSmithKline |
Contact | n/a |
Is FDA regulated | No |
Health authority | United Kingdom: Independent Ethics Committee |
Study type | Interventional |
This exploratory study is designed to help develop a clinical model to measure the earlier stages of dietary acid medicated enamel loss. The study will use fluoride as positive control to explore the validity of this design.
Status | Completed |
Enrollment | 30 |
Est. completion date | November 2015 |
Est. primary completion date | November 2015 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | Both |
Age group | 18 Years to 70 Years |
Eligibility |
Inclusion Criteria: - 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. - Aged at least 18 years - Good general and mental health with, in the opinion of the investigator or medically qualified designee no clinically significant and relevant abnormalities in medical history or upon oral examination. - Absence of any condition that would impact the participant's safety or well-being, or affect the participant's ability to understand and follow study procedures and requirements. - Two anterior maxillary teeth, without signs of toothwear or exposed dentine, facial restorations, abutments for fixed or removable partial dentures, full crowns or veneers, orthodontic bands or cracked enamel that would interfere with the study evaluations. Exclusion Criteria: - Pregnant or breast feeding women - 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 - Recent history (within the last year) of alcohol or other substance abuse - Presence of a disease or medication which in the opinion of the investigator, will impact on assessments - Gross periodontal disease, treatment of periodontal disease (including surgery) within 12 months of screening, scaling or root planing within 3 months of screening - Surface irregularities, discoloration due to trauma, restorations and hypo or hyperplasic areas which, in the opinion of the investigator or dental assessor, would prevent accurate impressions and grading - Daily doses of a medication which, in the opinion of the investigator, could impact the assessment, for example acidic medications - Any condition that would impact on the subject's safety or wellbeing or affect the individual's ability to understand and follow study procedures and requirements |
Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Single Blind (Outcomes Assessor), Primary Purpose: Basic Science
Country | Name | City | State |
---|---|---|---|
United Kingdom | GSK Investigational Site | Bristol |
Lead Sponsor | Collaborator |
---|---|
GlaxoSmithKline |
United Kingdom,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Change from pre-acid challenge (baseline) tooth impression grading score immediately following an acid challenge | The impressions of the tooth surface were analysed using scanning electron microscopy (SEM) to investigate changes in the enamel surface topography to determine degree of early stage enamel erosion. Interrogation of the tooth surface via impressions using SEM followed by visual image analysis was used to investigate the enamel surface topography. The Images were graded as follows: - No signs of surface erosive wear (no evidence of the "lock and key" structure) - Early signs of erosive surface changes - Mild signs of erosive surface changes (early signs of the "lock and key" structure). - Moderate signs of erosive surface changes - Severe signs of erosive surface changes ("lock and key" structure and enamel "pits") X - Not evaluable |
At 30 minutes post dietary acid challenge | No |
Secondary | Change from pre-acid challenge (baseline) tooth impression grading score following 2, 4, and 7 hours post acid challenge | The impressions of the tooth surface were analysed using scanning electron microscopy (SEM) to investigate changes in the enamel surface topography to determine degree of early stage enamel erosion. Interrogation of the tooth surface via impressions using SEM followed by visual image analysis was used to investigate the enamel surface topography. The Images were graded as follows: - No signs of surface erosive wear (no evidence of the "lock and key" structure) - Early signs of erosive surface changes - Mild signs of erosive surface changes (early signs of the "lock and key" structure). - Moderate signs of erosive surface changes - Severe signs of erosive surface changes ("lock and key" structure and enamel "pits") X - Not evaluable |
Upto 7 hours | No |
Secondary | Change from pre-acid challenge (baseline) tooth impression grading score immediately following brushing with a fluoride toothpaste. | The impressions of the tooth surface were analysed using scanning electron microscopy (SEM) to investigate changes in the enamel surface topography to determine degree of early stage enamel erosion. Interrogation of the tooth surface via impressions using SEM followed by visual image analysis was used to investigate the enamel surface topography. The Images were graded as follows: - No signs of surface erosive wear (no evidence of the "lock and key" structure) - Early signs of erosive surface changes - Mild signs of erosive surface changes (early signs of the "lock and key" structure). - Moderate signs of erosive surface changes - Severe signs of erosive surface changes ("lock and key" structure and enamel "pits") X - Not evaluable. Change from Baseline in Grading Score of SEM of Tooth Impression immediately following brushing was tested for product containing fluoride only i.e. Test Product |
Baseline to immediately following brushing | No |
Secondary | Change from Baseline of Salivary Calcium Concentration at 30 mins and 7 hours post dietary acid challenge | Saliva stored at 0 - 20°C was used for determining calcium concentration | Upto 7 hours | No |
Secondary | Change from Baseline of pH Measurement at 30 mins and 7 hours post dietary acid challenge | Saliva stored at 0 - 20°C was used for determining pH | Upto 7 hours | No |
Secondary | Change from baseline of buffering ability measurement at 30 mins and 7 hours post dietary acid challenge | Saliva stored at 0 - 20°C was used for determining buffering capacity. | upto 7 hours | No |
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