Chapter 2, 5 & 6. Identifier: OpticalMineralogyKerr. Identifier-ark: ark:// t1jj Ocr: ABBYY FineReader (Extended OCR). Ppi: Published formerly [] under the title: Thin-section mineralogy. Optical mineralogy.. by: Rogers, Austin Flint, ; Kerr, Paul F. (Paul Francis), joint author. Publication date urn:acs6:opticalmineralog00roge:epub: e6d5-bedfb-4cfa9c5b8 DOWNLOAD OPTIONS. Read Optical Mineralogy book reviews & author details and more at Paul F. Kerr (Author) Get your site here, or download a FREE site Reading App.

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Optical Mineralogy Kerr Short Reviews. Download PDF File. When you click on My Google eBooks, you'll see all the books in your virtual library, both downloadd . Download as PDF File .pdf), Text File .txt) or read online. We own STRUCTURAL GEOLOGY, 3RD EDITION ePub, doc, PDF, DjVu, txt forms. We will be pleased if . Optical Mineralogy (3rd Ed) [Paul F. Kerr] McGraw-Hill. Uploaded by. lockverchaisitu.cf: Optical Mineralogy (): Paul Francis Kerr: Books. a site? Get your site here, or download a FREE site Reading App.

Anisotropic optical properties of Fe/GaAs(001) nanolayers from first principles

Manufacturers do not give exact information about cement composition. A number of resin cements include camphor- quinone as a photo initiator, which creates a residual yellow color following light curing [ 17 ].

Almeida et al. The different polymerization systems might be one of the contributing factors leading to the difference in the content of unreacted components in these three groups.

On this basis, it was expected that shifting of the lightness varies in the tested groups. The cement color coding system was different in these tested cements. A2 shade cement showed a greater increase in chroma.

Although, these differences were not statistically significant. The translucency parameters are affected by the chroma that influences the final color. Therefore, high chromatic shades exhibit fewer translucencies [ 2 ].

It means that this cement shade might have more masking ability compared to the transparent cements. Previous studies state that high translucent ceramics have approximately the same translucency parameters as enamel [ 19 ].

Due to this similarity, prediction of CV translucency parameters should be done according to the use of these cements under the veneer and the interaction between ceramic, cement and teeth occur. Our findings of this study are in agreement with the results of Omar et al.

The results of Chen et al. They found that all the CVs after cementation became lighter and the final color of CV after cementation could be affected by the type of the cement and the results differed along with cement shades [ 13 ]. These differences may be due to the dissimilarity between the substrate used in these two studies.

While Omar et al. In our study, this range was 4.

Optical Mineralogy Kerr 2nd edition

As demonstrated, the exact comparison of these research studies is not possible due to the differences in variables. The effect of substrate on the final appearance of ceramic restorations has been proven [ 20 ]. Therefore, the selection of the substrate that is most related to the clinical conditions is considered.

Nonetheless, standardization of the color and surface properties of substrate is difficult, most research studies used composite substrate [ 5 , 9 , 10 , 13 ] or no substrate [ 4 , 19 , 21 ]. Some studies used human molar [ 3 , 17 ] or bovine teeth [ 2 ] to stimulate clinical conditions. A previous study showed that curved surface of the teeth has a negative effect on the homogenous light reflectance to colorimeter [ 3 ].

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It is difficult to provide an 8mm surface of human enamel without any dentine exposure due to tooth curvature. As a result, providing a smoother enamel surface with less curvature in the bovine teeth is more feasible than human teeth. The cement composition varies according to the polymerization, volumetric shrinkage and size of filler.

We expected that this difference can affect the optical behavior of the materials. Whatever our findings are, they were different from what was estimated. The limitation of this research study included the in vitro use of one instrumental assessment to evaluate color para- meters from exerting 1 shade of 1 type of ceramic veneer to bovine teeth with three types of resin cements, exactly after cementation without any aging.

Consequently, future research on the clinical color matching of ceramic veneers with different resin cement types is required. Nevertheless, there was no statistical difference between the types of cements. Ceramic veneers were darker after cemen- tation with three different cements. Assessment of color stability of different cements having different modes of polymerization before and after aging. J Am Sci ; 12 7 : An investigation into the effect of try-in pastes, uncured and cured resin cements on the overall color of ceramic veneer restorations: An in vitro study.


J Dent ; 38 Suppl. Influence of cement shade and water storage on the final color of leucite-reinforced ceramics.

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Dispersion of nonresonant third-order nonlinearities in Silicon Carbide

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