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Impact of Dietary Counseling on Efficacy of Tooth Bleaching

The Impact of Dietary Counseling on the Efficacy of Tooth Bleaching: a Randomized Controlled Trial

Status
UNKNOWN
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03528356
Enrollment
40
Registered
2018-05-17
Start date
2018-05-30
Completion date
2018-07-30
Last updated
2018-05-31

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Tooth Discoloration

Brief summary

The aim of this study will be to evaluate if subjects submitted to a white diet counseling during home dental bleaching will present better results than subjects that maintained their usual diets. Forty patients will be divided into two groups and randomly allocated to each group: usual diet (control) or white diet, avoiding dye-containing food and beverages. patients will be assessed through a food frequency questionnaire and color measurement using a spectrophotometer at baseline and six months after bleaching.

Interventions

BEHAVIORALRegular diet

Patients will not receive any information regarding their usual diet. They will simply perform home dental bleaching.

Sponsors

Federal University of Pelotas
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 70 Years
Healthy volunteers
Yes

Inclusion criteria

* Adults, aged 18 or higher; * Central incisors with shade A2 or darker

Exclusion criteria

* Undergone previous dental bleaching procedures; * Under orthodontic treatment; * Pregnant or lactating women.

Design outcomes

Primary

MeasureTime frameDescription
Tooth color6 monthsWill be assessed using a spectrophotometer

Secondary

MeasureTime frameDescription
Food frequency questionnaire6 monthsPatients will respond to a 30 item questionnaire regarding their daily diet. A Food Frequency Questionnaire (FFQ) was constructed to evaluate the consumption of chromogenic food and beverage of patients in the last year. A list of 54 foods and beverages that, according to the literature, have the potential to cause some kind of extrinsic pigmentation, was elaborated. In each food of beverage, the individual will be asked if he consumed in the last year and if the answer is yes, the consumption frequency (0 to 10 times) per unit of time (day, week, month or year). In addition, each individual will answer regarding the amount relative to the mean portion, half of the mean portion, or twice of the mean portion. The size of the mean portions will be considered by calculating the mean of each food consumed. The home measure for the mean portion will be based on the Table of Evaluation of Food Consumption in Home Measures (Pinheiro et al. 2000).

Countries

Brazil

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026