6533b826fe1ef96bd128518a
RESEARCH PRODUCT
Color stability of CAD/CAM Zirconia ceramics following exposure to acidic and staining drinks.
Riccardo BeltramiMarco ColomboAlberto DagnaClaudio PoggioMarco CavalloMatteo MieggeMarco Chiesasubject
Prosthetic DentistryChemistryResearch0206 medical engineering030206 dentistry02 engineering and technology:CIENCIAS MÉDICAS [UNESCO]020601 biomedical engineeringCoca colaStaining03 medical and health sciences0302 clinical medicinevisual_artUNESCO::CIENCIAS MÉDICASvisual_art.visual_art_mediumIn vitro studyCubic zirconiaFood scienceCeramicGeneral Dentistrydescription
Background The aim of this in vitro study was to evaluate the color stability of CAD/CAM Zirconia ceramics following exposure to acidic drink (Coca Cola) and after exposure to staining solution (coffee). Material and Methods All the samples were immersed in different staining solutions over a 28-day test period. A colorimetric evaluation according to the CIE L*a*b* system was performed by a blind trained operator at 7, 14, 21, 28 days of the staining process. Shapiro Wilk test and Kruskal-Wallis ANOVA were applied to assess significant differences among restorative materials. Paired t-test was applied to test which CIE L*a*b* parameters significantly changed after immersion in staining solutions. Results One week immersion in acidic drink did not cause a perceivable discoloration for all restorative materials (ΔE < 3.3). Subsequent immersion in coffee affected color stability of all Zirconia samples, even if Kruskal-Wallis ANOVA found significant differences among the various restorative materials. Conclusions The ∆Es of CAD/CAM Zirconia ceramics after immersion in coffee varied among the products, but color integrity is not affected by contact with acidic drinks. Key words:CAD/CAM restorative materials, CIE Lab, Zirconia ceramics.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-10-09 | Journal of clinical and experimental dentistry |