Tooth Discoloration
Conditions
Keywords
tooth bleaching, staining beverage
Brief summary
This double-blind randomized controlled clinical trial aimed to investigate the effect of staining beverage on color alteration of in-office tooth bleaching procedures.
Detailed description
Sixty-three eligible participants (25 males and 38 females, mean age 26.5 years) with at least one maxillary tooth demonstrating shade A3 or darker will be recruited and randomly allocated into 3 groups (n = 21), according to the different staining beverage used in this clinical trial: Coffee for group C, Tea for group T, and distilled water for group W. All participants will receive in-office tooth bleaching with 40% hydrogen peroxide (Opalescence Boost PF 40%) for the maxillary anterior teeth (2 sessions, with a 1-week interval). The participants will be instructed to use only the provided beverage rinses for 30 seconds, four times daily. Colour parameters (CIE L\*, a\*, b\*) will be measured with a spectrophotometer (Vita Easyshade Advance 4.0) at baseline (T1), after the first bleaching session (T2), after the second bleaching session (T3), 1 week after the completion of in-office bleaching (T4), and 3 weeks after the completion of in-office bleaching (T5). The colour differences (ΔE) and whiteness index (W) will also be calculated. The data will be statistically analysed through repeated ANOVA and Tukey's test (α = 0.05).
Interventions
BEHAVIORALmaking staining beverage rinse during in-office tooth bleaching
the subjects in experimental group should make staining beverage(coffee or tea) rinse for 30 second, four times daily.
Sponsors
Fujian Medical University
Study design
Allocation
RANDOMIZED
Intervention model
FACTORIAL
Primary purpose
TREATMENT
Masking
DOUBLE (Caregiver, Outcomes Assessor)
Intervention model description
factorial assignment
Eligibility
Sex/Gender
ALL
Age
18 Years to 30 Years
Healthy volunteers
Yes
Inclusion criteria
* patients between 18 and 30 years of age, with fully erupted upper and lower incisors and canines without dental or periodontal disease or restorations, and with at least one maxillary tooth presenting color score A3 or darker, as measured with the Vita Classical guide (Vita Zahnfabrik, Bad Sa ̈ ckingen, Germany) ordered by brightness
Exclusion criteria
* patients with systemic diseases or oral mucosal disorders, previous bleaching treatment, patients undergoing orthodontic treatment, pregnant women, people with known allergy to the product ingredients, smokers, and alcohol abusers.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in tooth colour | 4 weeks | Colour parameters (CIE L\*, a\*, b\*) will be measured with a spectrophotometer (Vita Easyshade Advance 4.0). The color alteration after each session will be given by the differences between the values obtained at the sessions and the baseline (∆E). |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Change in tooth whiteness | 4 weeks | The whiteness index will be registered at the sessions and the baseline. |
Countries
China
Outcome results
None listed