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Comparison of mechanical properties of all ceramic crown on zirconia blocks
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 Title & Authors
Comparison of mechanical properties of all ceramic crown on zirconia blocks
Kim, Won-Young; Chung, In-Sung; Jeon, Byung-Wook;
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 Abstract
Purpose: This study provided the basic data for selecting the zirconia blocks by comparing the mechanical properties of the all ceramic crown between the domestic, import, translucent and shade blocks that were used in clinically. Methods: Currently, the most commercial block of five types(one import and two domestic block which is the translucent and shade) were used. It were elucidated by means of three point bending test, hardness test, FE-SEM observations and EDX analysis. The results were analyzed using a one-way ANOVA and Scheffe post hoc test for significant findings. Results: For flexural strength, LT specimen was the highest as 733.1 MPa, followed by JT specimen(712.0 MPa), ZT specimen(646.0 MPa), LS specimen(553.1 MPa), JS specimen(429.0 MPa). One-way ANOVA showed statistically significant difference between groups for flexural strength(p<0.05). For hardness, ZT specimen was the highest as 1556.5 Hv, followed by JT specimen(1540.3 Hv), LT specimen(1512.3 Hv), JS specimen(1472.0 Hv), LS specimen(1353.3 Hv). One-way ANOVA showed statistically significant difference between groups for hardness(p<0.05). Conclusion: Domestic block was higher than import block for flexural strength, and translucent block was higher than shade block for flexural strength. However, all blocks showed clinically acceptable range. There was no significant difference in hardness between domestic and import blocks. And significant difference was observed in translucent and shade blocks.
 Keywords
zirconia block;flexural strength;hardness;FE-SEM;EDX;
 Language
Korean
 Cited by
1.
석고 모형재와 고무인상재의 젖음성이 지르코니아 코핑의 변연적합도에 미치는 영향,김원영;정인성;전병욱;

대한치과기공학회지, 2016. vol.38. 4, pp.255-262 crossref(new window)
2.
지르코니아 코핑과 전장도재 간의 전단결합강도와 파절양상 비교,김원영;전병욱;정인성;

대한치과기공학회지, 2015. vol.37. 4, pp.243-250 crossref(new window)
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