Color stability of polymer-infiltrated-ceramics compared with lithium disilicate ceramics and composite.
color stability
composites
hybrid ceramics
lithium disilicate ceramics
staining
Journal
Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.]
ISSN: 1708-8240
Titre abrégé: J Esthet Restor Dent
Pays: England
ID NLM: 101096515
Informations de publication
Date de publication:
Jan 2020
Jan 2020
Historique:
received:
09
07
2019
revised:
06
08
2019
accepted:
14
08
2019
pubmed:
5
10
2019
medline:
12
6
2020
entrez:
5
10
2019
Statut:
ppublish
Résumé
To investigate the color stability of hybrid ceramics and to compare it to composite and lithium disilicate ceramics. One hundred eighty samples were fabricated and processed with a semiautomatic grinding and polishing device (final step: 1200 grit). After thermocycling, samples were immersed in a staining solution (five subgroups: water, red wine, curry, black tea, cola) for 4 weeks. A spectroradiometer was used to determine the color of the samples in CIE L*a*b*. Color measurements were performed before staining (baseline, initial color), after thermocycling, after 2 and 4 week storage in staining solution and each after a two stage repolishing approach. Discoloration of specimens was calculated by means of ΔE All factors (material, staining solution, aging stage) were significantly associated with the extent of discolorations (P < .001). Maximum color changes occurred after 28 days staining (EN: ΔE Discoloration of hybrid ceramics ranged in-between lithium disilicate and composites, however more comparable to composites. Repolishing could reduce discolorations substantially. This study should help dental practitioners to estimate the color stability of common dental materials and the effect of polishing in removal of discolorations.
Substances chimiques
Composite Resins
0
Polymers
0
lithia disilicate
0
Dental Porcelain
12001-21-7
Types de publication
Journal Article
Langues
eng
Pagination
43-50Informations de copyright
© 2019 The Authors. Journal of Esthetic and Restorative Dentistry published by Wiley Periodicals, Inc.
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