Influence of Polishing After Bleaching on Color Change and Enamel Morphology

Universidade Federal do Para50 enrolled

Overview

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.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

PREVENTION

Masking

DOUBLE

Enrollment

Conditions

Tooth Discoloration Morphologic Change Tooth Sensitivity

Interventions

Hydrogen Peroxide 35%OTHER

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.

Hydrogen Peroxide 35% + Polishing whitened teethOTHER

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.

Eligibility

Sex: ALLMin age: 18 YearsMax age: 30 YearsHealthy volunteers:

Medical Language ↔ Plain English

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.

Locations (1)

Cecy Martins Silva

Belém, Pará, Brazil

Outcomes

Primary Outcomes

Influence of polishing on color after tooth whitening

Color evaluation was performed with the EasyshadeAdvanced spectrophotometer (Vita-Zahnfabrik, GE, Germany)

Time frame: 14 days

Secondary Outcomes

Surface morphology of whitening enamel with and without polishing

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.

Time frame: 14 days

Influence of polishing on sensitivity after tooth whitening

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.

Time frame: 14 days

Data from ClinicalTrials.gov

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