Dentin sensitivity
Conditions
Interventions
It will be a single-blind, non-inferiority, randomized clinical trial. One hundred and twenty healthy adults with caries and restoration-free anterior teeth A2 or darker, randomly allocated to three g
Sponsors
Universidade Estadual de Ponta Grossa
Universidade Estadual de Ponta Grossa
Eligibility
Age
18 Years to No maximum
Inclusion criteria
Inclusion criteria: Minimum age of 18 years; good overall and oral health; anterior maxillary teeth without restorations or carious or non-carious cervical lesions; right upper canine will be required to be A2 or darker according to the value-oriented Vita Classical shade guide (VITA Zahnfabrik, Bad Säckingen, Germany)
Exclusion criteria
Exclusion criteria: Dental prosthesis; visible enamel cracks; severe tooth discoloration; pregnant; lactating; patients with preexisting dental hypersensitivity; who underwent previous bleaching procedures and taking any anti-inflammatory or analgesic medicines.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Color evaluation. The tooth color will be evaluated at baseline, every five days from the beginning of bleaching, and one-month postbleaching, by two blinded calibrated and experienced evaluators (Kappa statistics higher than 80%). Evaluations will be performed subjectively, using value-oriented shade guide units (Vita Classical and the Vita Bleachedguide 3D-MASTER) will be used., and objectively, using a dental spectrophotometer (Paravina, 2018). The measurement area of interest for shade matching will be the middle third of the right upper canine’s facial surface. All recordings will be made in the same room under D65 daylight fluorescent light with a luminescence intensity of between 1200 and 1600 lux and if disagreements between the evaluators arose during color evaluation, a consensus will be reached. | — |
Secondary
| Measure | Time frame |
|---|---|
| Tooth Sensitivity Evaluation. Patients will be instructed to record daily their tooth sensitivity (TS) using a 0-10 Visual Analogue Scale (VAS) (Chemin et al., 2021; Ortega-Moncayo et al., 2021). For the VAS, the participants will be asked to place a line perpendicular to a 100 mm horizontal line with zero at one end indicating ‘‘no TS’’ and the other, end indicating ‘‘severe TS’’. The distance between the marked line to the zero end will be measured with the aid of a millimeter ruler (Sutil et al., 2020). The highest numeric value obtained in the VAS during the bleaching treatment will be used for statistical purposes. If the participant scored 0 (no sensitivity) in all-time assessments, this participant will be counted as not having TS. The daily values of TS intensity will be averaged for statistical purposes and will be arranged in two categories: the absolute risk of TS, which will represent the percentage of patients who reported TS at least once during treatment and the overall TS intensity for the two pain scales.;Assessment of Patients’ Satisfaction. Before and after bleaching, patients will answer the Orofacial Esthetic Scale (OES) (CAMPOS et al., 2020), containing eight items. Individuals will be asked how they feel about the appearance of their face, mouth, teeth, and tooth replacements. They will respond on a 0 to 10 numeric rating scale (0 - “very dissatisfied” and 10 - “very satisfied”) or mark the option “not applicable” if they do not wish to respond. OES items refer to seven esthetic components (face, facial profile, mouth, rows of teeth, tooth shape/form, tooth color, gum). These seven items are combined into a summary score ranging from 0 to 70 (maximum score when the patient is completely satisfied). An eighth OES item characterizes the patient’s global orofacial esthetics. Additionally, we will ask the participants if they agreed or not with two following sentences: "I am very satisfied with my smile" and "I am very satisfied with the color | — |
Countries
Brazil
Contacts
Public ContactRenata Maria Terra
Universidade Estadual de Ponta Grossa
Outcome results
None listed