Influence of Polishing After Bleaching on Color Change and Enamel Morphology

Tooth Discoloration Clinical Trial

Official title:

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

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT05635253
• Other study ID #: UFPara-0014
• Status: Completed
• Phase: N/A
• Start date: January 10, 2022
• Est. completion date: September 12, 2022

Study information

• Verified date: November 2022
• Source: Universidade Federal do Para
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial 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.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 50
• Est. completion date: September 12, 2022
• Est. primary completion date: August 26, 2022
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years to 30 Years

Eligibility

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.

Related Conditions & MeSH terms

• Dentin Sensitivity
• Morphologic Change
• Tooth Discoloration
• Tooth Sensitivity

Intervention

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.
• 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.

Locations

Country	Name	City	State
Brazil	Cecy Martins Silva	Belém	PA

Sponsors (1)

Lead Sponsor	Collaborator
Universidade Federal do Para

Country where clinical trial is conducted

Brazil, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Influence of polishing on color after tooth whitening	Color evaluation was performed with the EasyshadeAdvanced spectrophotometer (Vita-Zahnfabrik, GE, Germany)	14 days
Secondary	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
Secondary	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