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Degradation rate of bleaching gels during in-office tooth bleaching

Clinical degradation rate of bleaching gels with different acidities during in-office tooth bleaching

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
REBEC
Registry ID
RBR-35q7s3v
Enrollment
Unknown
Registered
2023-05-16
Start date
2023-11-20
Completion date
Unknown
Last updated
2025-10-27

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

Conditions

Dental Aesthetics

Interventions

The study aims to evaluate the rate of degradation of active hydrogen peroxide (PH) during in-office whitening using 35% pH gels at different pHs. For that, a randomized, parallel, double-blind clinic
E06.420.750

Sponsors

Universidade Estadual de Ponta Grossa
Lead Sponsor
Universidade Estadual de Ponta Grossa
Collaborator

Eligibility

Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: Patients aged 18 years or older; male or female; in good general and oral health; the premolars, canines and incisors of the maxilla and mandible they need to be free of caries lesions, restorations or endodontic treatments; the canines superiors must present WId values ??lower than 20, evaluated with a digital spectrometer (Vita Easyshade, Vita Zahnfabrik, Bad Säckingen, Germany)

Exclusion criteria

Exclusion criteria: Pregnant or lactating patients; smokers; with bruxism; severe internal discoloration (tetracycline stains, fluorosis, teeth pulped); dentine hypersensitivity; gingival recession or undergoing orthodontic treatment; participants who use anti-inflammatories, analgesics or antioxidants daily; patients who have already undergone tooth whitening procedures

Design outcomes

Primary

MeasureTime frame
Clinically evaluate the degradation rate of active PH during bleaching in office using PH 35% gels at different pHs.

Secondary

MeasureTime frame
Clinically evaluate the degradation rate of active PH during bleaching in office using PH 35% gels at different pHs, through titration with potassium permanganate;Clinically evaluate the pH of bleaching gels during in-office bleaching used PH 35% gels at different pHs, through an electrode;Evaluate the effectiveness of in-office whitening using 35% pH gels in different pHs, through color scales (Vita Classical and Vita Bleachedguide) and spectrometer Vita Easyshade (?Eab, ?E00, ?WID)

Countries

Brazil

Contacts

Public ContactAlessandra Reis

Universidade Estadual de Ponta Grossa

reis_ale@hotmail.com+55 (42) 3220 3740

Outcome results

None listed

Source: REBEC (via WHO ICTRP) · Data processed: Feb 6, 2026