Effect of Post-Core Materials on the Color Value of Four Dental All-Ceramic Cores

2013 ◽  
Vol 544 ◽  
pp. 396-400
Author(s):  
Rong Jian Lu ◽  
Cheng Long Wang ◽  
Jing Cai Zou ◽  
Yuan Fu Yi ◽  
Long Quan Shao ◽  
...  
Keyword(s):  
Noble Metal ◽  
Core Material ◽  
Ceramic Core ◽  
All Ceramic ◽  
Color Value ◽  
Core Materials

The aim of this study were to compare the color value of four kinds of dental all-ceramic cores (IPS e.max Press,Zenostar,Lava Zirconia and Upcera Zirconia) on three different post-core materials.All-ceramic core materials were made into samples at the diameter of 10mm and the thickness of 0.50.02mm.Their color value on the post-core material of noble metal,Co-Cr alloy and resin were respectively determined with chromatism instrument.It was showed that the color value of four all-ceramic cores were statistically different.IPS e.max Press was most obviously affected by post-core materials,while Upcera Zirconia the weakest.Lava Zirconia and Zenostar were influenced to a certain degree.In conclusion,non-mental post-core was preferable for IPS e.max Press,Upcera Zirconia was fit for any post-core materials.

Test of Relative Translucency of 5 All-Ceramic Core Materials

2013 ◽  
Vol 591 ◽  
pp. 289-292
Author(s):  
Jian Feng Chen ◽  
Rui Jie Dang ◽  
Li Sheng Zhao ◽  
Bin Deng ◽  
Bin Gu ◽  
...  
Keyword(s):  
Color Difference ◽  
Core Material ◽  
White Background ◽  
Ceramic Core ◽  
Black And White ◽  
Significant Difference ◽  
All Ceramic ◽  
Core Materials

Objective:To study the relative translucency of 5 veneered and glazed all-ceramic systems core material, including Procerra AllCeram Alumina, Vita In-Ceram Zirconium, Ivoclar Vivodent Empress, In-Ceram Spinell and Colored Zirconia. Methods: Under standard black and white background, the surface light reflectivity of 5 veneered all-ceramic systems core material was determined with contact color difference meter, and the ratio of Yb /Yw was calculated. Results: After veneered, the relative translucency of 5 core materials all declined, and ranged from 0.6740 of In-Ceram Spinell to 1.00 of In-Ceram zirconia, among of that In-Ceram Spinell was most transparent. Conclusion: Among the groups, there is no significant differences among Empress II, Procera AllCeram and Colored Zirconia (IL1,IL2,IL3). Compared with Procera AllCeram and Vita In-Ceram Zirconium , Procera AllCeram has significant difference. There is a significant difference between Procera AllCeram and In-Ceram Spinell.

Effect of Background Color to the Final Color of Four Highly Transparent Ceramics after Veneered

2015 ◽  
Vol 655 ◽  
pp. 122-125
Author(s):  
Yang Huang ◽  
Rong Jian Lu ◽  
Li Sheng Zhao ◽  
Yuan Fu Yi ◽  
Long Quan Shao ◽  
...  
Keyword(s):  
Noble Metal ◽  
Composite Resin ◽  
Precious Metals ◽  
Clinical Work ◽  
Metal Alloy ◽  
Core Material ◽  
Transparent Ceramics ◽  
Background Color ◽  
Color Value ◽  
Core Materials

This study aimed to investigate the color value of four kinds of highly transparent ceramics (Zenostar Zirconia, Lava Zirconia, Cercon Zirconia and Upcera Zirconia)after veneered on three different post core materials including noble metal alloy, Co-Cr alloy and composite resin. Highly transparent ceramics after veneered were made into specimens with 10mm in diameter and 1.0mm in thickness. The color of core ceramics after veneered on different post core materials were measured with Color Analyzes. The results showed that their color value were significantly different from each other. Zenostar ZR Translucent and Lava Plus High Translucency Zirconia can be easily affected by the background color because of its high translucency. Therefore, resin post core materials should be selected without cause prosthesis mismatch of colors in clinical work. When making Cerconht full contour zirconia restorations, you could try to use a resin material as a post core material. And selecting precious metals, you had better make it opaque. Upcera zirconia owned a poor relative translucency, when making clinical restorations; you could use any kind of post core materials.

Influence of Background Material on 3 Veneered All-Ceramic Core Materials

2010 ◽  
Vol 177 ◽  
pp. 293-297
Author(s):  
Rong Jian Lu ◽  
Ting Ting Ma ◽  
Yuan Fu Yi ◽  
Long Quan Shao ◽  
Jie Mo Tian ◽  
...  
Keyword(s):  
Noble Metal ◽  
Chromatic Aberration ◽  
Background Color ◽  
Ceramic Core ◽  
B Values ◽  
Significant Difference ◽  
All Ceramic ◽  
Background Material ◽  
Core Materials

To study the influence of background color on 3 veneered all-ceramic core materials, the color of all veneered samples that were put on noble metal, Ni-Cr alloy, Ag-Hg alloy and resin background was measured with chromatism instrument (and the chromatic aberration value among groups was Calculated). Under different backgrounds, there was significant difference in the L, a and b values among Empress II samples, there was significant difference in a and b values among In-Ceram Alumina samples, and there was no difference in the L, a and b values among In-Ceram Zirconium samples. After veneered, the influence of background color on Empress II was clear, on In-Ceram Alumina was less clear, and on In-Ceram Zirconium was void.

Test of Relative Translucency for Four All-Ceramic Core Material after Veneering Ceramic

2013 ◽  
Vol 544 ◽  
pp. 388-391
Author(s):  
Jian Feng Chen ◽  
Li Sheng Zhao ◽  
Yan Zhao ◽  
Bin Deng ◽  
Bin Gu ◽  
...  
Keyword(s):  
Color Difference ◽  
Core Material ◽  
Ceramic Core ◽  
Significant Difference ◽  
All Ceramic ◽  
Core Materials

Objective: To study the relative translucency of 4 veneered and glazed all-ceramic systems core material, including Vita In-Ceram Alumina, Vita In-Ceram Zirconium, Ivoclar Vivodent Empress and Colored Zirconia. Methods: Under standard black and write background, the surface light reflectivity of 4 veneered all-ceramic systems core material was determined with contact color difference meter, and the ratio of Yb /Yw was calculated. Results: After veneered, the relative translucency of 4 core materials all declined, and ranged from 0.8015 of Colored Zirconia to 1.00 of In-Ceram zirconia, among of that Empress II and Colored Zirconia were most transparent. Conclusion: Among the groups, there is no significant difference between Empress II and Colored Zirconia(IL1,IL2,IL3). Compared with Vita In-Ceram Alumina and Vita In-Ceram Zirconium, Vita In-Ceram Alumina(AL1) has significant difference. There is no significant difference between Vita In-Ceram Zirconium and Vita In-Ceram Alumina(AL2,AL3,AL4).

Effect of Background Color on In-Ceram and Cercon All-Ceramic Core Material

2011 ◽  
Vol 412 ◽  
pp. 356-360
Author(s):  
Yi Han Liu ◽  
Hong Chen Liu ◽  
Bin Deng ◽  
Long Quan Shao ◽  
Yuan Fu Yi ◽  
...  
Keyword(s):  
Color Difference ◽  
Core Material ◽  
Chromium Alloy ◽  
Background Color ◽  
Ceramic Core ◽  
Nickel Chromium ◽  
All Ceramic ◽  
Color Differences ◽  
Human Eyes ◽  
Core Materials

The present paper probes into the effect of background color of different post-core materials on the core materials of In-Ceram AL2 Electroformed Alumina, Z21 Electroformed Zirconia, Cercon base color Zirconia, and Cercon base Zirconia. The spectrocolorimeter was used to measure colorimetric values of all groups of samples against the background of noble metal, nickel-chromium alloy, silver amalgam and resin, and to calculate the color difference among the groups. The result showed that the color difference of Cercon base color Zirconia viewed against different backgrounds was identifiable by human eyes (ΔE > 1.5). In contrast, the color differences of In-Ceram AL2 Electroformed Alumina, Z21 Electroformed Zirconia and Cercon base Zirconia viewed against different backgrounds were unidentifiable by human eyes (ΔE < 1.5). Based on this, it can be stated that Cercon base color Zirconia is significantly affected by background color. Thus, proper method to shelter the background color should be adopted. In addition, AL2 Electroformed Alumina, Z21 Electroformed Zirconia, and Cercon base color Zirconia are less influenced by the background color, thus it is not necessary to cover the background color.

Comparing Study on Transmittance of Four Dental All-Ceramic Core Material

2012 ◽  
Vol 624 ◽  
pp. 231-234
Author(s):  
Bin Deng ◽  
Juan Xu ◽  
Li Min Liang ◽  
Yuan Fu Yi ◽  
Long Quan Shao ◽  
...  
Keyword(s):  
Experimental Results ◽  
Core Material ◽  
Ceramic Core ◽  
Clinical Recommendation ◽  
All Ceramic ◽  
Core Materials

The purpose of this study was to compare the transmittance of four dental all-ceramic core materials at clinical recommendation thickness.Specimens with 10mm in diameter and 0.50.01mm in thickness,including IPS e.max Press,Zenostar Zirconia,Lava Zirconia and Upcera Zirconia,were fabricated.The transmittance of specimens were measured with PR2650 spectrophotometer and measurements were analysed statistically with SPSS13.0.Experimental results showed that they had significantly different transmittance.There was a decreasing order,IPS e.max Press Lava Zirconia Zenostar Zirconia Upcera Zirconia,which were 6.1136.750 for IPS e.max,1.6042.135 for Lava Zirconia,1.5782.117 for Zenostar Zirconia and 0.9951.265 for Upcera Zirconia.

The Influence of Background Color to 3 All-Ceramic System Core Materials

2012 ◽  
Vol 512-515 ◽  
pp. 1788-1792
Author(s):  
Bin Deng ◽  
Hong Chen Liu ◽  
Yuan Fu Yi ◽  
Long Quan Shao ◽  
Ning Wen ◽  
...  
Keyword(s):  
Noble Metal ◽  
Noble Metals ◽  
Chromatic Aberration ◽  
Core Material ◽  
Background Color ◽  
Ceramic System ◽  
All Ceramic ◽  
Color Transform ◽  
Human Eyes ◽  
Core Materials

To study the influence of background color to 3 all-ceramic system core materials.The chromaticity value of all samples that were put on noble metal, Ni-Cr alloy, Hg-Ag alloy and resign background were measured with chromatism instrument, and chromatic aberration among groups were calculated. The chromatic aberration of Empress II samples on different background color could be distinguished by human eyes, but those of Alumina and Zirconium were unable to being distinguished. In conclusion, the influence of background color to Empress II and In-Ceram Alumina of AL1 were lager. When chosen as core material, noble metals should be covered to keep prosthesis from clinical color-transform. As background to In-Ceram Alumina of AL2, it was unnecessary for resin to be covered. In-Ceram Alumina of AL3, AL4 and In-Ceram Zirconium weren’t affected by background color.

scholarly journals A Comparative Shade Evaluation of Two Different All-Ceramic Materials over Three Core Build-up Materials: An in vitro Study

2012 ◽  
Vol 2 (2) ◽  
pp. 15-21
Author(s):  
Pranshu Batra
Keyword(s):  
In Vitro Study ◽  
Ceramic Materials ◽  
Core Material ◽  
Ceramic Core ◽  
Metal Core ◽  
All Ceramic ◽  
Zirconia Crowns ◽  
Materials Used ◽  
Core Materials

ABSTRACT Aim To evaluate and compare the shade of zirconia and alumina crowns over composite, all-ceramic and metal core material. Objectives (1) To evaluate the influence of composite core build-up material on the shade of zirconia and alumina crowns. (2) To evaluate the influence of all-ceramic core material on the shade of zirconia and alumina crowns. (3) To evaluate the influence of metal core material on the shade of zirconia and alumina crowns. (4) To compare the influence of composite, all-ceramic and metal core material on the shade of zirconia and alumina crowns. Materials and Methods The all-ceramic materials used for fabrication of crowns were zirconia (LAVA) and alumina (PROCERA). They were evaluated spectrophotometrically for the change in shade when placed over three core build-up materials. Results The observations obtained were statistically analyzed by analysis of variance. Zirconia crowns when compared with alumina crowns showed the least shade change when placed on the three core materials. Among the three core materials used, composite core build-up material showed the least change in the shade. Conclusion Zirconia crowns showed least shade change when placed on the three core materials. How to cite this article Batra P, Ram SM. A Comparative Shade Evaluation of Two Different All-Ceramic Materials over Three Core Build-up Materials: An in vitro Study. J Contemp Dent 2012;2(2):15-21.

Sign in / Sign up

Export Citation Format

Share Document