Dentin Sensitivity
Conditions
Interventions
This study will be part of a clinical trial designed to test the effectiveness and sensitivity of office tooth whitening in different age groups. The clinical trial will be controlled and parallel. Pa
G2 - 31-50-year-old-patients. After dental prophylaxis with pumice and water, followed by gingival barrier application with Top Dam (FGM, Joinville, SC, Brasil), bleaching will be performed with 35% h
E06.420.750
Sponsors
Universidade Federal do Amazonas
Faculdade de Odontologia - Universidade Federal do Amazonas
Eligibility
Age
14 Years to 50 Years
Inclusion criteria
Inclusion criteria: Volunteers between 14 and 18 years old and between 31 and 50 years old; of both genders; dissatisfied with the color of their teeth; no systemic diseases (metabolic, heart and immunological diseases); oral condition without periodontal disease; selected after publication on posters and guidelines within the scope of the Dentistry faculty clinic; at least two central incisors or canines with color A2 or darker; the six upper front teeth free of restorations on the palatal and buccal surfaces; healthy enamel and without pathological, physiological and medicinal changes
Exclusion criteria
Exclusion criteria: Use of orthodontic braces; severe crowding; presence of intrinsic stains (tetracycline staining, fluorosis, pulped teeth); using anti-inflammatory drugs and antioxidant analgesics, which may mask sensitivity; smokers; alcoholics; pregnant or breastfeeding women; participants who have already undergone a whitening procedure; participants with bruxism, or significant oral pathologies; participants with exposed dentin in the incisal portion of the anterior teeth; with non-carious cervical lesions; patients who reported previous sensitivity
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Primary resulted outcome 1. No diferences in sensitivity were detected for both groups whether with the use of the visual analogue scale (VAS) p=0.8221, or the use of the numerical rating scale (NRS) p=0.9669.;Primary expected outcome 1. Primary outcome was expected not to show differences in absolute risk and sensitivity intensity between groups evaluated. The absolute risk was assessed by the percentage of patients that mentioned any sensitivity. Intensity was evaluated by Wilcoxon and McNemar tests. Data were collected using Excel (Microsoft Corporation USA) and submitted to normality Shapiro Will test. | — |
Secondary
| Measure | Time frame |
|---|---|
| Secondary expected outcome 2. Color change for both groups is expected to be similar, despite of the color evaluation method (subjective Vita Classical shade guide scale, subjective Vita BleachedGuide scale or objetive measures with the spectrophotometer EasyShade).;Secondary resulted outcome 2. Bleaching of 9-10 units on the Vita Classical Scale and 6-7 units on the Vita Bleachedguide was observed for the adolescents group. The adults group achieved a bleaching of 8-10 units on the Vital Classical scale and 4-5 units on the Vita Bleachedguide scale. During evaluation with the Vita classical scale overall bleaching was higher for the adolescents group but it was not statistically different from the adults group (p=0.384). However, groups presented different efficacy of bleaching when the vita Bleachedguide scale was used where adolescents group achieved 1,5 units more than the adults group (p=0.006). Mean color objective evaluation (?E) also presented differences between groups (p=0.011). Color variations were assessed by Mann- Whitney test. All statistic tests were based on data collected and appropriate for p< 0.05. | — |
Countries
Brazil
Contacts
Public ContactLuciana da Silva
Universidade Federal do Amazonas
Outcome results
None listed