Efficacy and tooth sensitivity of at-home bleaching in patients with esthetic restorations: a randomized clinical trial

Objectives This study aims to evaluate the color change and tooth sensitivity (TS) caused by at-home bleaching in patients with sound and with restored teeth. Methods Forty patients were selected according to the inclusion and exclusion criteria and divided into two groups: So (patients with six car...

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Bibliographic Details
Published in:Clinical oral investigations 2022, Vol.26 (1), p.565-573
Main Authors: Meireles, Sônia Saeger, de Oliveira, Renata Dantas Barreto, Barbosa, Marcella Tuanny Guedes, da Silva, Karine Letícia, Loguercio, Alessandro Dourado
Format: Article
Language:English
Subjects:
Bleaching
Color
Dental caries
Dentin Sensitivity - chemically induced
Dentistry
Esthetics, Dental
Humans
Hydrogen Peroxide
Maxilla
Medicine
Original Article
Patients
Peroxides
Teeth
Tooth Bleaching - adverse effects
Tooth Bleaching Agents - adverse effects
Treatment Outcome
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Summary:Objectives This study aims to evaluate the color change and tooth sensitivity (TS) caused by at-home bleaching in patients with sound and with restored teeth. Methods Forty patients were selected according to the inclusion and exclusion criteria and divided into two groups: So (patients with six caries-free maxillary anterior teeth) and Re (patients with at least one restoration in the six maxillary anterior teeth). Both groups were bleached with 10% carbamide peroxide (CP) at-home bleaching. The color change (CIELab [ΔE* ab ], CIEDE00 [ΔE 00 ], and whiteness index [ ∆WI D ]) were assessed using a spectrophotometer at baseline, 2 weeks, and 1 and 3 months after bleaching. Patients recorded their TS using a numeric rating scale (0–4). Data of color change were submitted to Student’s T-test. The absolute risk and intensity of TS were compared using Fisher’s and the Mann–Whitney tests, respectively (α = 0.05). Results Higher ΔE* ab , ΔE 00 , and ∆WI D values were observed for So in relation to Re after all recall rate ( p   0.9). Conclusions At-home dental bleaching with 10% CP generated the same pattern of TS in patients with or without restorations. However, in patients with restored teeth, it produced a lower color change after 2 weeks of bleaching. Clinical significance After 2 weeks of at-home bleaching, a lower whitening effect was observed in patients with anterior restorations when compared with patients with sound teeth. Trial registration ClinicalTrials.gov identifier RBR-52j6gmg
ISSN:1432-6981
1436-3771
DOI:10.1007/s00784-021-04035-y