Stomatognathic diseases
Conditions
Interventions
This is a three-arm, single-blind, randomized controlled clinical study. The study will be divided into three groups (n=40): 1) 35% hydrogen peroxide gel manufactured by the company Angelus (Londrina,
E06.420.750
Sponsors
Universidade Norte do Paraná
Universidade Estadual do Oeste do Paraná
Eligibility
Age
18 Years to 50 Years
Inclusion criteria
Inclusion criteria: Patients with good general health will be included; age between 18-50 years of age; good oral hygiene; absence of caries in the anterior and inferior teeth; absence of palatal and vestibular restorations; upper canine with A2 or darker shading, which will be evaluated with Vita Classical scale (VITA Classical Shade, Vita Zahnfabrik, Bad Säckingen, Germany).
Exclusion criteria
Exclusion criteria: Patients will be excluded: undergoing previous bleaching procedures; That have restorations on the anterior superior teeth; Who have canal treatment in the anterior teeth; Pregnant and / or breastfeeding; With severe internal discoloration (tetracycline, spots, fluorosis, non-vital teeth); Parafunctional habits such as bruxism; Or any other pathology that may cause sensitivity
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Expected outcome 1: 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.;Outcome found 1: The VLED group showed a lower absolute risk of tooth sensitivity (ranging from 18.2% to 40.9%) compared to the HP and HP+VLED groups (ranging from 55.2% to 81.5%). | — |
Secondary
| Measure | Time frame |
|---|---|
| Expected outcome 2: The difference in color between the baseline condition and 1 month post-bleaching 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 3: The intensity of tooth sensitivity will be assessed using the numeric 5-point scale (NRS 0-4) and the visual analogue scale (VAS 0-10) and will be presented as means and standard deviations in different periods (during dental bleaching, up to 1 h, 1 h to 24 h and 24 h to 48 h post-bleaching).;Outcome found 2: The HP and HP+VLED groups showed significantly higher mean values for ?E, ?E00, ?SGU, and ?WID than the VLED group, at both 7 and 30 days after bleaching.;Outcome found 3: The intensity of tooth sensitivity was significantly higher in the HP and HP+VLED groups compared to the VLED group. The HP+VLED group showed the highest values (up to 10). | — |
Countries
Brazil
Contacts
Public ContactSandrine;Bianca Berger;Maran
Universidade Norte do Paraná;Universidade Estadual do Oeste do Paraná
Outcome results
None listed