Signs and symptoms in clinical findings, as darkened teeth
Conditions
Interventions
Participants will be instructed to use bleaching agents in trays (these bleaching agents are commercialy avaibale on the market). Instructions will be given to use the agents in trays, to place in pos
Other
Sponsors
Fapesp - Fundação de Amparo à Pesquisa do Estado de São Paulo
Centro de Pesquisas Odontológicas São Leopodo Mandic
Eligibility
Age
18 Years to 30 Years
Inclusion criteria
Inclusion criteria: being aged between 18 and 30 years; presence of at least 20 sound teeth; presence of central and lateral incisors or upper and lower canines with at most 1/6 of the buccal surface restored.
Exclusion criteria
Exclusion criteria: teeth with an initial color of B1 assessed using a shade scale (Vitapan Classical, Vita, Germany) or spectrophotometer (VITA Easyshade® Advance, Vita, Germany); people wearing dentures or fixed/removable orthodontic appliances; pregnant or breastfeeding women; smokers; history of dentin sensitivity; presence of active caries in enamel or dentin; periodontal disease or other oral diseases; tetracycline-pigmented teeth; patients who had their teeth bleached before.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| It is expected that individual trays lead to a higher comfort degree by the use of visual analogic scales (from 0 - uncomfortable - to 10 - very comfortable).;It is expected that all bleaching agents could result in similar efficaccy in respect to color change by the use of a spectrophotometer, obtaining values of delat E higher than 3.3 (clinically perceptible).;It is expected that individual trays lead to a higher technical acceptability by the use of visual analogic scales (from 0 - not acceptable - to 10 - completelly acceptable). | — |
Secondary
| Measure | Time frame |
|---|---|
| It is expected that all bleaching agents could provide similar tooth sensitivity intensity for all volunteers, by the use of a visual analogic scale regarding sensitivity intensity (from 0 - without sensitivity - to 10 - high sensitivity).;It is expected that all bleaching agents could provide similar gingival irritation for all volunteers, by the use of scores (absent, localized ad generalized). | — |
Countries
Brazil
Contacts
Public ContactRoberta Basting
Centro de Pesquisas Odontológicas São Leopodo Mandic
Outcome results
None listed