the dentin hypersensitivity in dental bleaching
Conditions
Interventions
1:use the dentifrice contained 0.454% stannous fluoride and 1450ppm fluorine
2:use the dentifrice contained 0.5% potassium nitrate and 1450ppm fluorine
3:use the dentifrice contained 1450ppm fluorine
Sponsors
Department of Prosthodontics in the school & hospital of stomatology, Peking University
Eligibility
Sex/Gender
All
Age
18 Years to 35 Years
Inclusion criteria
Inclusion criteria: Subjects included in this clinical trial were in good general and oral health and had six caries-free vital maxillary anterior teeth free of restorations. The shades of vital maxillary anterior teeth were C2 or darker as judged by two clinicians by means of comparison with a value-oriented shade guide (Vita Classical, Vita Zahnfabrik, Bad S ckingen, Germany). The subjects should be 18 to 35 years old. The subjects should be non-smokers. The anterior teeth should have no recession or dentin exposure. The scores of the anterior teeth judging by Schiff cold air sensitivity scale are no more than 1.
Exclusion criteria
Exclusion criteria: Exclusion criteria were as follows: having undergone previous tooth-whitening or professional tooth-sensitivity treatments; having facial restorations; being pregnant or lactating; having severe internal tooth discoloration (as a result of tetracycline stains, fluorosis or pulpless teeth); using of desensitizing toothpaste in the 1 month period prior to the trial.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| the hypersensitivity after airblast;the hypersensitivity after the Yeaple probe test; | — |
Secondary
| Measure | Time frame |
|---|---|
| the coulor change of the teeth after dental bleaching; | — |
Countries
China
Contacts
Public ContactLiu Yuhua
Outcome results
None listed