Effect of Thickness and Shade of Resin and Ceramic- Based Hybrid Materials on Color Masking Abilities and Optical Performance of CAD/CAM Materials.

Al-Haj Husain, Nadin; Walther, Lorenz; Özcan, Mutlu; Brägger, Urs; Joda, Tim (2021). Effect of Thickness and Shade of Resin and Ceramic- Based Hybrid Materials on Color Masking Abilities and Optical Performance of CAD/CAM Materials. European journal of prosthodontics and restorative dentistry, 29(1), pp. 14-21. Dennis Barber 10.1922/EJPRD_2058Al-HajHusain08

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Scientific data analysing color masking abilities of chairside CAD/CAM materials is lacking. The purpose of this in-vitro study was to evaluate the thickness and shade influence of three materials on their optical behaviour. Three materials: a) LD: Lithium disilicate glass ceramic (Emax, Ivoclar Vivadent), b) LDS: Lithium-disilicate-strengthened aluminosilicate glass ceramic (N!ce, Straumann) and c) RNC: Resin Nanoceramic (Lava Ultimate, 3M ESPE) were polished in different shades (A1,A2,A3) and thicknesses (0.1- 1.2mm). Specimens (N=108; n=36 per group) (12x12x1mm3) were positioned on resin composite base (Clearfil AP-X, Kuraray) in shade A3. Spectrophotometric measurements were performed and the parameters thickness, shade and material were analysed using three-way ANOVA, and pairwise T-tests (P-values ⟨ 0.05). Both the shade (p⟨0.001) and the interaction of material in correlation to thickness (p⟨0.001) were significant. Shade value A1-A3 comparisons were significant A1 vs. A2 (p=0.045); A2 vs. A3 (p=0.002); A1 vs. A3 (p⟨0.001)). A significant correlation of the material and thickness was observed when comparing LD and LDS (p=0.007) at the thickness of 0.1-0.4 mm. Masking abilities were influenced by material and thickness choice. Reinforced glass ceramics showed the best results in the smallest thickness tested (0.1-0.4 mm). LDS could be considered as an advantageous alternative in minimal-invasive cases.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > School of Dental Medicine > Department of Reconstructive Dentistry and Gerodontology

UniBE Contributor:

Al-Haj Husain, Nadin and Brägger, Urs

Subjects:

600 Technology > 610 Medicine & health

ISSN:

2396-8893

Publisher:

Dennis Barber

Language:

English

Submitter:

Tina Lauper

Date Deposited:

07 Oct 2020 14:17

Last Modified:

28 Feb 2021 01:31

Publisher DOI:

10.1922/EJPRD_2058Al-HajHusain08

PubMed ID:

32786178

Uncontrolled Keywords:

CAD/CAM Color Masking Glass Ceramic Hybridceramics Lithium Discilicate Ceramics

BORIS DOI:

10.7892/boris.146288

URI:

https://boris.unibe.ch/id/eprint/146288

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