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[The test of metal-ceramic bonding strength among three ceramic alloies]
Wei-Shan Ding1, Duo Wang, Jing Lan
1School of Dentistry, Shandong Medical University, Jinan 250012, Shandong Province, China.
Purpose:
To compare the metal-ceramic bonding strength of different ceramic alloies.
Methods:
30 wax sheets were divided into 6 groups at random. Each group included 5 sheets. After being invested conventionally with Bellaves SH,the samples were casted and fused with porcelain.The metal-ceramic bonding strength was evaluated.
Results:
The highest bonding strength was found in Bio Herador N alloy, and then in TILITE alloy and Heraenium S alloy respectively. Bio Herador N alloy and TILITE alloy all had significant differences of the bonding strength before and after treatment (P<0.05). There was no significant differences in the bonding strength of the Heraenium S alloy after treatment (P>0.05).
Conclusion:
The bonding strength of precious metal-ceramic was higher than that of non-precious metal-ceramic.Pre-oxygen treatment can improve the metal-ceramic bonding strength of Bio Herador N alloy and TILITE alloy,but it had no effect on the metal-ceramic bonding strength of the Heraenium S alloy.
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