RESEARCH ARTICLE
Effect of home and over the contour bleaching on stainability of CAD/CAM esthetic restorative materials
Correction(s) for this article
-
ERRATUM
- Volume 34Issue 3Journal of Esthetic and Restorative Dentistry
- pages: 577-577
- First Published online: May 21, 2021
Neslihan Tinastepe DDS, PhD,
Ozlem Malkondu DDS, PhD,
Ipek Iscan DDS, PhD,
Ender Kazazoglu DDS, PhD,
Corresponding Author
Neslihan Tinastepe DDS, PhD
Department of Prosthodontics, Private Practice, Istanbul, Turkey
Correspondence
Neslihan Tınastepe, Private Practice, Ataturk Bulvarı, Manolya 2/13, Atasehir, Istanbul, Turkey.
Email: [email protected]
Search for more papers by this authorOzlem Malkondu DDS, PhD
Department of Prosthodontics, Faculty of Dentistry, Yeditepe University, Istanbul, Turkey
Search for more papers by this authorIpek Iscan DDS, PhD
Department of Prosthodontics, Faculty of Dentistry, Medipol University, Istanbul, Turkey
Search for more papers by this authorEnder Kazazoglu DDS, PhD
Department of Prosthodontics, Faculty of Dentistry, Yeditepe University, Istanbul, Turkey
Search for more papers by this authorNeslihan Tinastepe DDS, PhD,
Ozlem Malkondu DDS, PhD,
Ipek Iscan DDS, PhD,
Ender Kazazoglu DDS, PhD,
Corresponding Author
Neslihan Tinastepe DDS, PhD
Department of Prosthodontics, Private Practice, Istanbul, Turkey
Correspondence
Neslihan Tınastepe, Private Practice, Ataturk Bulvarı, Manolya 2/13, Atasehir, Istanbul, Turkey.
Email: [email protected]
Search for more papers by this authorOzlem Malkondu DDS, PhD
Department of Prosthodontics, Faculty of Dentistry, Yeditepe University, Istanbul, Turkey
Search for more papers by this authorIpek Iscan DDS, PhD
Department of Prosthodontics, Faculty of Dentistry, Medipol University, Istanbul, Turkey
Search for more papers by this authorEnder Kazazoglu DDS, PhD
Department of Prosthodontics, Faculty of Dentistry, Yeditepe University, Istanbul, Turkey
Search for more papers by this authorAbstract
Objective
To determine the effect of home and over the counter bleaching on the stainability of CAD/CAM restorative materials, and to correlate the surface roughness with discoloration.
Material and Methods
Specimens were fabricated from feldspathic ceramic, an hybrid ceramic, a resin nano-ceramic, and lithium disilicate-reinforced glass ceramic. After baseline surface roughness (Ra1) and color measurement, each material was randomly divided into three groups according to bleaching regimen as Opalescence PF and; Opalescence Go; control. Then, the second color and surface roughness (Ra2) measurements were made. Thereafter, all specimens were immersed in a coffee solution for 12 days and the third color measurement was made. Color and whiteness change (CIELAB— ΔEab, CIEDE2000—ΔE00, whiteness index—ΔWID) were calculated after bleaching (ΔE1;ΔE001;ΔWID1) and immersion in the coffee solution (ΔE2;ΔE002;ΔWID2).
Results
According to both CIELAB, CIEDE 2000 and WID formulas, the highest mean ΔE1, ΔE2, ΔWID1, ΔWID2 values were observed for LAVA Ultimate groups while the lowest values were measured for e.max CAD groups. The findings also showed that there was a positively significant relationship between Ra2, and ΔE2 and ΔWID2.
Conclusions
Type of restorative materials and bleaching agents had an impact on color change after bleaching and immersion in coffee.
Clinical Significance
Home and over-the-counter bleaching agents may cause an increase in susceptibility of restorative materials to staining.
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