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.

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.

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.

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).

Comparing Study on Translucency of Four Veneered Dental All-Ceramic Core Materials

2012 ◽  
Vol 624 ◽  
pp. 235-238
Author(s):  
Rong Jian Lu ◽  
Cheng Long Wang ◽  
Juan Xu ◽  
Yuan Fu Yi ◽  
Long Quan Shao ◽  
...  
Keyword(s):  
Color Difference ◽  
Experimental Results ◽  
Anterior Tooth ◽  
Optical Effect ◽  
Ceramic Core ◽  
Posterior Tooth ◽  
Significant Difference ◽  
All Ceramic ◽  
Core Materials

This study aimed to compare the translucency of four veneered dental all-ceramic core materials,including IPS e.max Press,Zenostar,Lava Zirconia and Upcera Zirconia.All specimens were fabricated at 10mm in diameter and 1.00.01mm in thickness.The translucency of specimens were measured with color difference meter and measurements were statistically analysed with SPSS 13.0. Experimental results showed that their translucency had significant difference,the order of relative translucency from high to low was IPS e.max PressLava ZirconiaZenostarUpcera Zirconia.IPS e.max Press which has good optical effect may be preferable for restoring anterior tooth with higher translucent. As for relatively opaque posterior tooth,Upcera Zirconia may be advisable.

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.

Spectral Transmittance of Six All-Ceramic Core Materials after Veneering Ceramic

2011 ◽  
Vol 412 ◽  
pp. 352-355
Author(s):  
Yi Han Liu ◽  
Hong Chen Liu ◽  
Bin Deng ◽  
Long Quan Shao ◽  
Yuan Fu Yi ◽  
...  
Keyword(s):  
Statistical Data ◽  
Slip Casting ◽  
Production Method ◽  
Spectral Transmittance ◽  
Ceramic Core ◽  
Significant Difference ◽  
All Ceramic ◽  
Natural Teeth ◽  
Alumina Composite ◽  
Core Materials

The spectral transmittance of six kinds of Vita In-Ceram and Cercon all-ceramic core materials after veneering ceramic was determined. Based on the production method recommended by the manufacturer, specimens of the same thickness are made. PERKIN ELMER Spectrophotometer is adopted to measure the spectral transmittance of In-Ceram AL2 slip-casting glass/alumina composite, AL2 electroformed alumina, Z21 slip-casting glass/zirconia composite, Z21 electroformed zirconia, Cercon base color zirconia and Cercon base zirconia all-ceramic core materials, after veneering ceramic. The results show that, after veneering ceramic, Cercon base Zirconia has the highest spectral transmittance, followed by AL2 Electroformed Alumina and Z21 Electroformed Zirconia, whereas the transmittance of Z21 slip-casting Glass/Zirconia composite has the lowest. Statistical data show that, among the groups, In-Ceram slip-casting Glass/Alumina composite (AL2), Electroformed Alumina (AL2), Cercon base color Zirconia and Cercon base Zirconia have significant differences between every group. On the other hand, there is no significant difference between In-Ceram slip-casting Glass/Zirconia composite (Z21) and Electroformed Zirconia (Z21). Therefore, we should choose all-ceramic restoration materials based on the spectral transmittance of all-ceramic core materials after veneering ceramic and transparency of the remaining natural teeth of patients.

Relative Translucency of IPS E.max LT Core Materials after Veneering and Glazing

2011 ◽  
Vol 492 ◽  
pp. 358-361 ◽  
Author(s):  
Ting Sun ◽  
Long Quan Shao ◽  
Jun Ai ◽  
Bin Deng ◽  
Ning Wen
Keyword(s):  
Contrast Ratio ◽  
White Background ◽  
Ceramic System ◽  
The Core ◽  
Significant Difference ◽  
All Ceramic ◽  
Before And After ◽  
Different Thickness ◽  
Core Materials

This study compared the translucency of IPS e.max all-ceramic system of A and D color series veneered and glazed at clinically appropriate thicknesses. Core specimens (n = 5) of IPS e.max were produced and veneered with IPS e.max veneering porcelain to final dimensions (13 mm in diameter, 0.6 mm in thickness for core specimens with a thickness of 0.3 and 1.0 mm for core specimens with a thickness of 0.5 mm). Luminous reflectance was measured three times each specimen with a calibrated spectrophotometer after veneering and again after glazing cycle. Contrast ratios (CR=Yb/Yw) were measured from the luminous reflectance (Y)of the tested specimens with a black (Yb) and a white background (Yw). There was no significant difference in contrast ratios of specimens within the same color series before and after glazing (P > 0.05). Significant difference was found in the contrast ratios of specimens of the same color but different thickness before and after glazing (P < 0.05). The specimens with a thickness of 1.0mm presents significantly higher contrast ratios than specimens of the same color with a thickness of 0.6mm before and after glazing. The contrast ratios of glazed specimens were significantly lower than nonglazed ones. The Contrast ratio increases as the thickness of the core veneer materials increase, while luminosity and chroma are not related to relative translucency. The glazing cycle results in decreased opacity for core veneer materials.

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