Effect of bleaching on color change of composite after immersion in chlorhexidine and coffee.
Bleaching
carbamide peroxide
chlorhexidine
coffee
color
composite resin
extrinsic stain
hydrogen peroxide
Journal
Journal of conservative dentistry : JCD
ISSN: 0972-0707
Titre abrégé: J Conserv Dent
Pays: India
ID NLM: 101147009
Informations de publication
Date de publication:
Historique:
received:
21
01
2019
revised:
18
03
2020
accepted:
04
05
2020
entrez:
22
10
2020
pubmed:
23
10
2020
medline:
23
10
2020
Statut:
ppublish
Résumé
Since the introduction of resin composites, the staining of resin-based materials by colored solutions such as coffee, tea, chlorhexidine (CHX), and other beverages has become a common concern. The aim of this study was to evaluate the effect of home and office bleaching as a treatment for discoloration of composite after immersion in coffee or CHX. A microhybrid composite (Z250), nanohybrid composite (Z550), and nanofill composite (ultimate, body shade) were selected. Forty disk shape specimens (8 mm diameter and 2 mm thickness) for each composite were prepared then divided into two groups according to staining solutions (25 g of coffee in 250 ml water, 20 min/day or 0.2% CHX, 1 min/day). Following 1 month staining, specimens were divided into two groups again. Half of the specimens was bleached with in office bleaching agent (Opalescence Boost 40% hydrogen peroxide concentration) 3 times in one visit for 15minutes and the others subjected to home bleaching agent(Opalescence 10% carbamide peroxide) 6h/day until 2 weeks both from Ultradent Products, Inc., South Jordan, UT, USA. Color of the specimens was measured with a spectrophotometer using CIELAB color space at baseline, after 1 month staining, and after ending the bleaching process. Analysis of variance was used to analyze the data ( Coffee and CHX provided significant color changes in all groups ( Coffee produced more color changes than CHX. The hydrogen peroxide has the same whitening effect in comparison with carbamide peroxide.
Sections du résumé
BACKGROUND
BACKGROUND
Since the introduction of resin composites, the staining of resin-based materials by colored solutions such as coffee, tea, chlorhexidine (CHX), and other beverages has become a common concern.
AIM
OBJECTIVE
The aim of this study was to evaluate the effect of home and office bleaching as a treatment for discoloration of composite after immersion in coffee or CHX.
MATERIALS AND METHODS
METHODS
A microhybrid composite (Z250), nanohybrid composite (Z550), and nanofill composite (ultimate, body shade) were selected. Forty disk shape specimens (8 mm diameter and 2 mm thickness) for each composite were prepared then divided into two groups according to staining solutions (25 g of coffee in 250 ml water, 20 min/day or 0.2% CHX, 1 min/day). Following 1 month staining, specimens were divided into two groups again. Half of the specimens was bleached with in office bleaching agent (Opalescence Boost 40% hydrogen peroxide concentration) 3 times in one visit for 15minutes and the others subjected to home bleaching agent(Opalescence 10% carbamide peroxide) 6h/day until 2 weeks both from Ultradent Products, Inc., South Jordan, UT, USA. Color of the specimens was measured with a spectrophotometer using CIELAB color space at baseline, after 1 month staining, and after ending the bleaching process.
STATISTICAL ANALYSIS
METHODS
Analysis of variance was used to analyze the data (
RESULTS
RESULTS
Coffee and CHX provided significant color changes in all groups (
CONCLUSION
CONCLUSIONS
Coffee produced more color changes than CHX. The hydrogen peroxide has the same whitening effect in comparison with carbamide peroxide.
Identifiants
pubmed: 33088059
doi: 10.4103/JCD.JCD_37_19
pii: JCD-22-529
pmc: PMC7542073
doi:
Types de publication
Journal Article
Langues
eng
Pagination
529-532Informations de copyright
Copyright: © 2020 Journal of Conservative Dentistry.
Déclaration de conflit d'intérêts
There are no conflicts of interest.
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