- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03089216
Combined Bleaching Technique: Efficacy and Tooth Sensitivity
Combined Bleaching Technique: Efficacy and Tooth Sensitivity - A Randomized, Double Blind Clinical Trial
Study Overview
Status
Conditions
Detailed Description
This study will be conducted under the CONSORT recommendations. After approval by the Ethics Committee for Research duly registered, the trial will be conducted in the clinic of dental school at the Federal University of Goias located in Goiania. One hundred eight participants 108 volunteers will be selected on the criteria that qualify inclusion and exclusion from the study will be reported all volunteers were examined not qualify under the criteria for inclusion as part of the initial according to CONSORT recommendations .
After signing the signed an informed consent form all volunteer participants will receive a dental prophylaxis with pumice and water in a rubber cups for the removal of extrinsic stains two weeks before the beginning of tooth whitening.
Study Type
Enrollment (Actual)
Phase
- Phase 4
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Upper and lower anterior teeth without restorations;
- Upper and lower anterior teeth that have never undergone a bleaching procedure and are A2 or darker in color compared to the Vita Classical).
Exclusion Criteria:
- Presence of primary and/or secondary carious lesion (s) on upper and lower anterior teeth;
- Presence of non-carious lesions, such as abfraction, erosion and abrasion;
- Presence of clinically visible cracks or defects of dental enamel on the dental surfaces of the upper and lower anterior teeth;
- Use of fixed orthodontic appliances;
- Presence of tooth sensitivity classified as equal to or greater than mild;
- Presence of severe dental dimming;
- Presence of parafunctional habits;
- Presence of any oral pathology;
- Smokers;
- pregnant and lactating women
Study Plan
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: RANDOMIZED
- Interventional Model: PARALLEL
- Masking: DOUBLE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
EXPERIMENTAL: Combined Bleaching(2x20)
In-office: 35% hydrogen peroxide of 20 minutes each.
At-home: 10% carbamide peroxide
|
one clinical session with two applications of 35% hydrogen peroxide of 20 minutes each.
10% carbamide peroxide for two hours daily over the course of two weeks.
|
EXPERIMENTAL: Combined Bleaching(2x20) with arginine
Combined Bleaching(2x20) with arginine In-office: 35% hydrogen peroxide of 20 minutes each.
At-home: 10% carbamide peroxide Desensitizing agent: dentifrice containing 8% arginine and calcium carbonate.
|
one clinical session with two applications of 35% hydrogen peroxide of 20 minutes each.
10% carbamide peroxide for two hours daily over the course of two weeks.
using during all the treatment.
Other Names:
|
EXPERIMENTAL: Combined Bleaching(1x20)
In-office: 35% hydrogen peroxide of 20 minutes each.
At-home: 10% carbamide peroxide
|
one clinical session with one application of 35% hydrogen peroxide of 20 minutes each.
10% carbamide peroxide for two hours daily over the course of two weeks.
|
EXPERIMENTAL: Combined Bleaching(1x20) with arginine
Combined Bleaching(1x20) with arginine In-office: 35% hydrogen peroxide of 20 minutes each.
At-home: 10% carbamide peroxide Desensitizing agent: dentifrice containing 8% arginine and calcium carbonate.
|
using during all the treatment.
Other Names:
one clinical session with one application of 35% hydrogen peroxide of 20 minutes each.
10% carbamide peroxide for two hours daily over the course of two weeks.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Tooth Sensitivity (TS)
Time Frame: during bleaching, and up to 48 hours postbleaching
|
Tooth sensitivity (TS) was evaluated using a five-point rating scale (NRS), in which 0 = none (minimum value), 1 = mild, 2 = moderate, 3 = considerable, and 4 = severe (maximum value); and a visual analogue scale (VAS) in wich each participant placed a line perpendicular to a 10-cm-long line (on which 0 referred to "no pain" (minimum value) and 10 referred to "severe pain" (maximum value)). Tooth sensitivity (TS) was evaluated during bleaching, and up to 48 hours postbleaching. The worst TS score or numeric value obtained in each assessment was considered for statistical purposes. It was calculated an average to obtain the median. |
during bleaching, and up to 48 hours postbleaching
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Color Evaluation
Time Frame: The evaluations were performed in the baseline period and one month after the treatment
|
Objective color evaluation: The shade was determined using spectrophotometer VITA Easyshade, in which the parameters L*, a*, and b*, in which L* represents the value from 0 (black) to 100 (white) and a* and b* represent the shade, where a* is the measurement along the red-green axis and b* is the measurement along the yellow-blue axis. The color alteration (ΔE) was determined by the differences between the values obtained at baseline and one month after the treatment, which was calculated with the formula: ΔE = [(ΔL *) 2 + (Δa *) 2 + (Δb *) 2]1/2. In the Outcome Measure Data Table it was presented Mean and Standard Deviation of the color alteration (ΔE) between Baseline vs one month after bleaching for each group. |
The evaluations were performed in the baseline period and one month after the treatment
|
Collaborators and Investigators
Investigators
- Principal Investigator: Isabella N Favarão, DDS, MS, Universidade Federal de Goias
Study record dates
Study Major Dates
Study Start (ACTUAL)
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 043178
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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