Dental Plaque
Conditions
Keywords
Enzymes, Dental plaque, Gingivitis, Oral microbiome
Brief summary
The purpose of the study is to assess the effect of enzyme containing lozenges on dental plaque accumulation in healthy adults.
Detailed description
The purpose of the study is to examine the clinical effects of lozenges containing three extracellular matrix-degrading enzymes on dental plaque accumulation and removal, prevention of gingivitis, and oral microbiome composition after professional tooth cleaning, as compared to a placebo lozenge without enzymes. Two different concentrations of the enzymes will be tested, to investigate a potential dose-dependent effect of the enzymes. Furthermore, safety of the enzyme lozenge will be assessed by clinical evaluation of the oral mucosa. The null hypothesis is that treatment with enzyme-containing lozenges does not affect plaque accumulation as compared to a placebo control.
Interventions
OTHEREnzyme lozenge 1
Participants are instructed to take one enzyme containing lozenge three times daily, at least 30 min after a meal, for 14 days. No normal oral hygiene procedures are allowed during the intervention period.
OTHEREnzyme lozenge 2
Participants are instructed to take one lozenge with 3x higher enzyme concentration three times daily, at least 30 min after a meal, for 14 days. No normal oral hygiene procedures are allowed during the intervention period.
OTHERPlacebo lozenge
Participants are instructed to take one placebo lozenge three times daily, at least 30 min after a meal, for 14 days. No normal oral hygiene procedures are allowed during the intervention period.
Sponsors
University of Aarhus
Novozymes A/S
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* Generally healthy males and females ≥18 years of age. * Able to read, sign and receive a copy of the signed informed consent form. * Have at least 20 natural teeth.
Exclusion criteria
* Clinically visible active caries lesions and/or periodontitis. * Significant oral soft tissue pathology based on a visual examination. * History of allergy or significant adverse events following use of oral hygiene products such as toothpastes, mouth rinses, breath mints, lozenges, or chewing gum or their ingredients. * History of allergies to ingredients in the test product. * Self-reported as pregnant or nursing. * Self-reported serious medical conditions. * Antibiotic or anti-inflammatory medication within 30 days of screening visit. * Orthodontic appliances, including retainers, peri/oral piercings, or removable partial dentures. * Acute sinusitis or severe oral-pharyngeal infections.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Plaque amount | Change in QHPI score from baseline to 24 hours' follow-up | Dental plaque accumulation after 1-day use of either a test or placebo investigational lozenge assessed by the Turesky modified Quingly-Hein Plaque Index (QHPI) (score 0-5, 0 being no plaque, 5 being entire tooth covered with plaque) |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Plaque amount | Change in QHPI score from baseline to Day 7 follow-up and from baseline to Day 14 follow-up | Dental plaque accumulation after 7 and 14 days assessed by the Turesky modified Quingly-Hein Plaque Index (QHPI) (score 0-5, 0 being no plaque, 5 being entire tooth covered with plaque) |
| Gingivitis | Change in GI from baseline to Day 14 follow-up | Development of gingivitis after 14 days assessed by the Gingival Index of Löe and Silness (GI) (score 0-3, 0 being no gingivitis, 3 being excessive gingivitis) |
| Plaque removal | Day 14 visit | Plaque removal by mechanical treatment with a water-/airpik. The technique will be applied professionally at the clinical site by co-investigator. |
| Oral microbiome | Change in microbiome composition from baseline to Day 14 follow-up | Oral microbiome composition |
| Plaque fluorescence intensity measurement | Change in intensity measurement from baseline to Day 7 follow-up and Day 14 follow-up | Dental plaque accumulation assessed by fluorescence intensity measurements, to provide information on the individual level of plaque formation. Soft biofilm on the teeth is calculated using an appropriate software program, compatible with the device used. |
Countries
Denmark
Outcome results
None listed