Tooth discoloration
Conditions
Interventions
The study is a randomized clinical trial, controlled, double-blind.
Forty volunteers participated in the study, distributed in two groups of 20 volunteers in each group, according to the bleaching ag
Procedure/surgery
E06.420.750
Sponsors
Universidade Federal do Amazonas - Faculdade de Odontologia
Universidade Federal do Amazonas - Faculdade de Odontologia
Eligibility
Age
18 Years to 40 Years
Inclusion criteria
Inclusion criteria: Patients will be included in this clinical trial were men and women over 18 years; who were in good general and oral health; were required to have six maxillary and mandibular anterior teeth without caries lesions or restorations; the right superior incisor should be shade C2 or darker as judged by comparison with a VITA Classical value-oriented shade guide (Vita Zahnfabrik, Bad Säckingen, Germany)
Exclusion criteria
Exclusion criteria: Patients will be excluded pregnant or lactating women; smokers; bruxism habits; severe internal tooth discoloration (tetracycline stains, fluorosis, pulpless teeth); orthodontic appliance users; gingival recessed; exposed dentine; who took anti-inflammatories, analgesics or antioxidants.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The difference in color between the baseline condition and post-bleaching (1 week and 1 month) will be assessed by Vita Classical and Bleachedguide Vita shade guide as well as with the Vita Easyshade spectrophotometer. The data will be presented as means and standard deviations. Expected outcome 1: The 35% PH gel and the violet LED photocell light produce similar lightening efficacy.;Outcome found 1: In the present study, the use of the LED photocell light did not produce a whitening efficacy resembling a 35% PH gel, with color change values ??on the Vita Classical scale of 0.6 units, while PH at 35% showed an average of 6 units. | — |
Secondary
| Measure | Time frame |
|---|---|
| The intensity of dental sensitivity will be assessed using the VAS visual analog scale (0-10) and will be presented as mean and standard deviation in different periods (during tooth whitening, up to 1 h, from 1 h to 24 h and from 24 to 48 h after -whitening). Expected outcome 3: The use of the violet LED photocell light will not influence the intensity of tooth sensitivity.;Outcome found 3: The results obtained demonstrated that the use of the violet LED photocell light influenced the intensity of tooth sensitivity, reducing it, being considered only mild. In the group with PH at 35%, the intensity of sensitivity was mild to considerable.;Number of patients that report spontaneous pain in any moment of the bleaching protocol and up to 48 h post-bleaching, through self-report. This number will be presented as percentage of patients with tooth sensitivity and will be named absolute risk of tooth sensitivity. Expected outcome 2: The use of the violet LED photoclear will not influence the risk of tooth sensitivity.;Outcome found 2: The results obtained demonstrated that the use of the violet LED photocell light influenced the risk of tooth sensitivity, reducing it, where in a group of 20 patients, only 3 showed sensitivity. In the group with PH at 35%, of 20 patients, 13 reported tooth sensitivity. | — |
Countries
Brazil
Contacts
Public ContactJuliana de Sá
Universidade Federal do Amazonas - Faculdade de Odontologia
Outcome results
None listed