The Bond Strength of Ni-Cr Free Alloys of Recasting for Porcelain Fused to Metal
Yoo Ji-Heui, Lee Myeung-Gu, 김영일,
소속 상세정보
( Yoo Ji-Heui ) - Sunflower Dental. Lab
( Lee Myeung-Gu ) - Graduate School of Paichai University Department of International Trade
김영일 ( Kim Young-Il ) - Konyang University Graduate School of Public Health & Welfare Department of Public Health
KMID : 1157520120080010001
Abstract
Objective: This study was to find out the effect on bond strength to porcelain of reusing some Ni-Cr alloys that do not include Beryllium, as a harmful substance.
Methods: Alphaloy (Alpha Dent. KOREA), Vera Bond 2V (AlbaDent, Inc. USA), T4 (Ticonum. USA) as non precious alloys without Beryllium and Noritake Super Porcelain EX-3 porcelain powder were used as experimental materials. 3 point flexual rigidity test was done using universal tester (Houndsfield, England) to measure bond strength of metal to porcelain and the following results were gained.
Results: 1. In case of Alphaloy, significant discrepancy was shown with mean value being the highest in single use. And as a result of post-examination, it has been shown that there was difference between single use and 3 time reuse. 2. In case of Vera Bond 2V, the mean value was the highest in single use. But it was not a significant discrepancy. 3. In case of T4, there was significant discrepancy with the mean value being the highest in single use. The results of post-examination showed there was difference between single use, 3 time reuse and 5 time reuse.
Conclusion: Establishing strategies on how we will use Ni-Cr alloys from now on and advanced studies for more systematic future study results should be done.
키워드
dental porcelain; metal ceramic alloys
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