Influence of Polishing After Bleaching on Color Change and Enamel Morphology

Influence of Polishing After Bleaching on Color Change and Enamel Morphology: Randomized Clinical Trial

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 Overview

• Status: Completed
• Conditions: Tooth Discoloration; Tooth Sensitivity; Morphologic Change
• Intervention / Treatment: Other: Hydrogen Peroxide 35%; Other: Hydrogen Peroxide 35% + Polishing whitened teeth

• Study Type: Interventional
• Enrollment (Actual): 50
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Brazil
  • PA
    • Belém, PA, Brazil, 66075-110
      • Cecy Martins Silva

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 16 years to 28 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

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.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Prevention
• Allocation: Randomized
• Interventional Model: Factorial Assignment
• Masking: Double

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Other: GROUP GSEM; In-office whitening treatment with 35% Hydrogen Peroxide	Other: Hydrogen Peroxide 35%; 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.
Experimental: GROUP GP; In-office whitening treatment with 35% Hydrogen Peroxide + Polishing of whitened teeth	Other: Hydrogen 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.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Influence of polishing on color after tooth whitening	Color evaluation was performed with the EasyshadeAdvanced spectrophotometer (Vita-Zahnfabrik, GE, Germany)	14 days

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
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.	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.	14 days

Collaborators and Investigators

• Sponsor: Universidade Federal do Para

Study record dates

Study Major Dates

• Study Start (Actual): January 10, 2022
• Primary Completion (Actual): August 26, 2022
• Study Completion (Actual): September 12, 2022

Study Registration Dates

• First Submitted: November 13, 2022
• First Submitted That Met QC Criteria: November 29, 2022
• First Posted (Actual): December 2, 2022

Study Record Updates

• Last Update Posted (Actual): December 2, 2022
• Last Update Submitted That Met QC Criteria: November 29, 2022
• Last Verified: November 1, 2022

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Stomatognathic Diseases; Tooth Diseases; Dentin Sensitivity; Tooth Discoloration; Anti-Infective Agents, Local; Anti-Infective Agents; Hydrogen Peroxide
• Other Study ID Numbers: UFPara-0014

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No