THE EFFECT OF SHADING ON THE FLEXURAL STRENGTH OF ZIRCONIA- BASED CERAMIC RAINBOW

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ALIKHASI MARZIEH; KHANMOHAMMADI RAZIEH; NIAKAN SOMAYEH

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Journal: Journal of Dental Medicine Year:2013 | Volume:26 | Issue:3 (76) Page(s): 171-177

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Title

THE EFFECT OF SHADING ON THE FLEXURAL STRENGTH OF ZIRCONIA- BASED CERAMIC RAINBOW

Author(s)

ALIKHASI MARZIEH | KHANMOHAMMADI RAZIEH | NIAKAN SOMAYEH | Issue Writer Certificate

Keywords

ZIRCONIAQ2

COLORQ2

STRENGTHQ2

Abstract

Background and Aims: Along with the advances in dental material and invention of new techniques of producing ceramics, the demand for the beauty and matching restoration's COLOR with patient's natural teeth is growing. Nowadays, ZIRCONIA systems are the focus of attention. Despite their STRENGTH, one of the problems of such systems is high opacity and failing to provide the favored COLOR. Considering few studies about the influence of shading on ZIRCONIA, the purpose of this in vitro study was to evaluate the effect of different shading of ZIRCONIA-based ceramics on the biaxial flexural STRENGTH.Materials and Methods: In this in vitro experimental study, Rainbow (Dentium, Korea) ZIRCONIA-based ceramics (the diameter of 15mm and 1mm in thick) were divided into four groups of 10 specimens. According to Vita shade guide system and manufacturer's time recommendations (3 seconds), three groups of disc specimens were shaded to A3, B3 and D3 COLORs and other ten specimens remained uncolored as control group. The biaxial flexural STRENGTH test of discs was evaluated, and with the EDX analysis system the elements' composition available in COLORs was detected. Finally, data were analyzed using one-way ANOVA and Post-hoc tests.Results: The biaxial flexural STRENGTH in non COLORed specimens, A3 shaded discs, B3 shaded, and D3 shaded specimens were determined 1061.93, 819.16, 1100.10, and 825.48 MPa respectively which was statistically significant among groups (P<0.001). The statistical analysis revealed that the highest STRENGTH in B3 and non COLORed groups which were significantly higher than A3 and D3. EDX analysis showed significant differences among different COLORed compositions.Conclusion: The biaxial flexural STRENGTH of ZIRCONIA cores are affected by shading and the specific selected COLOR.

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APA: Copy

ALIKHASI, MARZIEH, KHANMOHAMMADI, RAZIEH, & NIAKAN, SOMAYEH. (2013). THE EFFECT OF SHADING ON THE FLEXURAL STRENGTH OF ZIRCONIA- BASED CERAMIC RAINBOW. JOURNAL OF DENTAL MEDICINE, 26(3 (76)), 171-177. SID. https://sid.ir/paper/25806/en

Vancouver: Copy

ALIKHASI MARZIEH, KHANMOHAMMADI RAZIEH, NIAKAN SOMAYEH. THE EFFECT OF SHADING ON THE FLEXURAL STRENGTH OF ZIRCONIA- BASED CERAMIC RAINBOW. JOURNAL OF DENTAL MEDICINE[Internet]. 2013;26(3 (76)):171-177. Available from: https://sid.ir/paper/25806/en

IEEE: Copy

MARZIEH ALIKHASI, RAZIEH KHANMOHAMMADI, and SOMAYEH NIAKAN, “THE EFFECT OF SHADING ON THE FLEXURAL STRENGTH OF ZIRCONIA- BASED CERAMIC RAINBOW,” JOURNAL OF DENTAL MEDICINE, vol. 26, no. 3 (76), pp. 171–177, 2013, [Online]. Available: https://sid.ir/paper/25806/en

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