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Reliability of shade matching of two different zirconia based materials and techniques

Thesis

Last updated: 05 Jan 2025

Subjects

-

Tags

Fixed Prosthodontics

Authors

El-Shikfeh, Firas Fares

Accessioned

2018-08-26 05:26:08

Available

2018-08-26 05:26:08

type

M.Sc. Thesis

Abstract

Aim of study: The aim of this study was to assess the accuracy of shade matching and degree of translucency of two different zirconia based materials and techniques. Materials and methods: Prettau Zirkon, Ice Zirconia Translucent and Ice Zirconia Ceramic were used in this study, Samples were divided according to type of zirconia into two groups of 10 samples each: Group A: Prettau zirconia, Group B : Conventional layering technique. Each group was subdivided into two sub-groups of 5 samples each according to the shade (A1, A3). Twenty zirconia ceramic discs were constructed from prefabricated zirconia ceramic blocks using the Zirkonzahn CAD/CAM system. Fabrication of Group A discs: Zirconia Prettau discs of 1.5 mm thickness and 11 mm in diameter. Group B discs: Conventionally veneered zirconia discs made of 1.5 mm thickness (0.5 core zirconia and covered by 1 mm porcelain) and 11 mm in diameter. All samples were subjected to color measurements using a spectrophotometer. Results: The results showed that ceramic type, shade and the interaction between the two variables had a statistically significant effect on mean translucency. Conclusion: Prettau as a full contoured zirconia restoration can be used in both anterior and posterior teeth as it showed higher translucency and closer shade matching values than the veneered conventional zirconia.

Issued

1 Jan 2013

DOI

http://dx.doi.org/10.21473/iknito-space/39515

Details

Type

Thesis

Created At

28 Jan 2023