- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03514290
Effect of Low-level Laser Therapy on Post-bleaching Sensitivity and Color Change
Effect of Low-level Laser Therapy on Post-bleaching Sensitivity and Color Change: a Clinical, Randomized and Double-blind Study
Objective: The objective of this clinical study was to evaluate low-level laser (LLL) therapy in tooth sensitivity and in effecting color change after in-officer bleaching treatment across three weeks of treatment.
Methods: Twenty-one volunteers were evaluated through the split-mouth model, so that the right and left maxillary/mandibular quadrants were randomized and allocated to one of two groups: GPLACEBO - the laser tip was positioned without the emission of light (placebo effect) + tooth bleaching with 35% hydrogen peroxide (HP); GLASER - treated with LLL + tooth bleaching with 35% HP. To assess tooth sensitivity, a modified visual analogue scale (VAS) was used after an evaporative stimulus (stimulated pain) and a daily pain questionnaire (unstimulated pain) was also applied. A spectrophotometer was used to measure the color. Three bleaching sessions were performed, with intervals of 7 days. Sensitivity results were tested using Friedman test for intra-group evaluation and Wilcoxon test for inter-group evaluation and ANOVA for color change.
Study Overview
Status
Intervention / Treatment
Detailed Description
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
PA
-
Belém, PA, Brazil, 66075-110
- Federal University of Para
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Do not have previous dental sensitivity
- The canine had to be shade A2 or darker.
Exclusion Criteria:
- Enamel hypoplasia
- Gingival recession
- Dentin exposure
- Visible cracks on buccal enamel
- Pulpitis
Study Plan
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: RANDOMIZED
- Interventional Model: CROSSOVER
- Masking: DOUBLE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
PLACEBO_COMPARATOR: GPLACEBO
the laser tip was positioned without the emission of light (placebo effect) + tooth bleaching with 35% hydrogen peroxide (HP).
|
Three 15-minute applications of 35% hydrogen peroxide gel (Whiteness HP, FGM®, Joinville, SC, Brazil) were carried out, totaling 45 minutes in each of the four bleaching sessions, with an one-week interval between applications.
The laser tip was positioned similarly to experimental group but without light irradiation
|
EXPERIMENTAL: GLASER
treated with Low-lever laser + tooth bleaching with 35% hydrogen peroxide (HP).
|
Three 15-minute applications of 35% hydrogen peroxide gel (Whiteness HP, FGM®, Joinville, SC, Brazil) were carried out, totaling 45 minutes in each of the four bleaching sessions, with an one-week interval between applications.
Received Low-lever laser therapy using the infrared spectrum, with a wavelength of 808 nm in its active medium AsGaAl (arsenic-gallium-aluminum), at two points: on the central of cervical and medial regions of incisors, canines and premolars in the corresponding hemi-arch.
At each point, 60 J/cm2 was applied during 16 seconds with an irradiance of 3.75 W/cm² using the therapeutic visible infrared device.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Dental sensitivity induced by office bleaching
Time Frame: change in baseline sensitivity at the 3rd bleaching session
|
Evaporative stimulus (stimulated pain) using air jet from a triple syringe and a daily pain questionnaire (unstimulated pain).
Both methods were associated with a modified visual analogue scale was used: 0 (pain absent); 1 (mild pain); 2 (moderate pain) and 3 (severe pain).
|
change in baseline sensitivity at the 3rd bleaching session
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Color change promoted by tooth bleaching
Time Frame: change in baseline color at the 3rd bleaching session
|
Spectrophotometer was used to measure the color
|
change in baseline color at the 3rd bleaching session
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Cecy M Silva, Federal University of Para
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
- UFPara-003
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.
Clinical Trials on Dentin Sensitivity
-
Minia UniversityCompleted
-
Armed Forces Institute of Dentistry, PakistanRecruitingSensitivity, ToothPakistan
-
University of PaviaEnrolling by invitation
-
Universidad del DesarrolloFlorencia PachecoUnknown
-
King Khalid UniversityCompleted
-
Cairo UniversityUnknownDentin Hypersensitivity | Dentin Desensitizing Agents
-
Federal University of UberlandiaCoordenação de Aperfeiçoamento de Pessoal de Nível Superior.; Fundação de Amparo...UnknownDentin Sensitivity | Dentin Hypersensitivity | Dentine Hypersensitivity | Hypersensitivity DentinBrazil
-
Federal University of UberlandiaCoordenação de Aperfeiçoamento de Pessoal de Nível Superior.; Fundação de Amparo...UnknownDentin Sensitivity | Dentin Hypersensitivity | Dentine Hypersensitivity | Hypersensitivity DentinBrazil
-
University of Roma La SapienzaCompletedTo Decrease Dentin HypersensitivityItaly
-
Federal University of UberlandiaCompletedDentin Sensitivity | Dentin Hypersensitivity | Dentine Hypersensitivity | Hypersensitivity DentinBrazil
Clinical Trials on Tooth bleaching
-
University of Nove de JulhoNot yet recruiting
-
University of ChileCompleted
-
University of Campania "Luigi Vanvitelli"Completed
-
Fujian Medical UniversityCompleted
-
University of ManitobaUnknownSmoking | Smoking CessationCanada
-
Universidade Estadual de Ponta GrossaCompletedTooth DiscolorationBrazil
-
Universidade Federal de SergipeCompletedTooth DiscolorationBrazil
-
Fujian Medical UniversityCompletedTooth DiscolorationChina
-
Cairo UniversityNot yet recruiting
-
Shiraz University of Medical SciencesCompletedGingivitisIran, Islamic Republic of