Morphologic Change, Tooth Discoloration, Tooth Sensitivity
Conditions
Brief summary
This trial evaluated the influence of polishing on enamel color change after in-office bleaching treatment. It also evaluated the influence of polishing on tooth morphology and sensitivity.
Interventions
Group that received only bleaching treatment. Soft tissue protection was performed with a Top Dam light-curing gingival barrier (FGM, Santa Catarina, SC, Brazil). Application of whitening gel (Whitness HP 35%/FGM) on the buccal surface from premolar to premolar in the upper and lower arches. Three 45-minute sessions were held with an interval of seven days between them.
OTHERHydrogen Peroxide 35% + Polishing whitened teeth
Group that received only bleaching treatment followed by polishing. Soft tissue protection was performed with a Top Dam light-curing gingival barrier (FGM, Santa Catarina, SC, Brazil). Application of whitening gel (Whitness HP 35%/FGM) on the buccal surface from premolar to premolar in the upper and lower arches. Three 45-minute sessions were held with an interval of seven days between them. After bleaching, the vestibular surfaces were polished for 20s on each bleached tooth, with polishing paste and felt disc (Diamond Flex, FGM, Santa Catarina, SC, Brazil) in low rotation.
Sponsors
Universidade Federal do Para
Study design
Allocation
RANDOMIZED
Intervention model
FACTORIAL
Primary purpose
PREVENTION
Masking
DOUBLE (Subject, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to 30 Years
Healthy volunteers
Yes
Inclusion criteria
* Individuals aged 18 to 30 years old of both sexes; * With good oral hygiene; * With no sensitivity to tactile and evaporative stimuli; * Who have not undergone previous bleaching treatment, and with no caries lesions.
Exclusion criteria
* patients undergoing fixed orthodontic treatment; * patients allergic to the bleaching product; * drug users or pregnant women; * patients with carious lesions, defective restorations and/or periodontal disease, patients with systemic diseases, pulpitis or patients using analgesics.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Influence of polishing on color after tooth whitening | 14 days | Color evaluation was performed with the EasyshadeAdvanced spectrophotometer (Vita-Zahnfabrik, GE, Germany) |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Surface morphology of whitening enamel with and without polishing | 14 days | The images were obtained using a electron microscope (Mira3 model) with type electron gun, mounted on supports of aluminum with 12mm of diameter, using tape double adhesive carbon face, and metallic with Au for 2'30'' which deposits about the sample a film thick average of 10 to 15nm. The images were generated by detecting secondary electrons, using a voltage acceleration of 5 kV and a working distance of around 15 mm. |
| Influence of polishing on sensitivity after tooth whitening | 14 days | assessment of sensitivity during treatment using a visual analogue scale with values from 0 to 10, with higher values indicating a worse level of pain. |
Countries
Brazil
Outcome results
None listed