health people
Conditions
Interventions
group 1:Bleaching agent A, gel, 15mg, on the 1st day, the bleaching gel will be put onto the surfaces of the samples 15 minutes at the room temperature, then wash way the gel. Repeat this procedure 3
group 2:Bleaching agent B, gel, 15mg, on the 1st day, the bleaching gel will be put onto the surfaces of the samples 15 minutes at the room temperature, then wash way the gel. Repeat this procedure 3
group 3:control group,there is no gel on the surfaces of samples.the samples will be stored in distilled water renewed every day for 14 days.
group 4:Bleaching agent A, gel, 15mg, on the 1st day, the bleaching gel will be put onto the surfaces of the samples 15 minutes at the room temperature, then wash way the gel. Repeat this procedure 3
group 5:Bleaching agent B, gel, 15mg, on the 1st day, the bleaching gel will be put onto the surfaces of the samples 15 minutes at the room temperature, then wash way the gel. Repeat this procedure 3
group 6:control group,there is no gel on the surfaces of samples.the samples will be stored in artificial saliva for 14 days
group 7:Ble
Sponsors
School and Hospital of Stomatology, Wuhan University
Eligibility
Sex/Gender
All
Age
18 Years to 30 Years
Inclusion criteria
Inclusion criteria: 1.Aged 18 to 30 years old; 2. Normal saliva flow; 3. Absence of dental caries and/or periodontal disease; 4. Willing to perform bleaching treatment following the research schedule
Exclusion criteria
Exclusion criteria: 1.Use of orthodontic appliances; 2.Presence of fixed or removable denture; 3.Smokers; 4.Dentine sensitivity.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Fracture toughness;Surface morphology;Microhardnes; | — |
Countries
China
Contacts
Public ContactTao Jiang
Outcome results
None listed