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자료유형
학술저널
저자정보
저널정보
한국치위생학회 한국치위생학회지 한국치위생학회지 제13권 제2호
발행연도
2013.1
수록면
361 - 368 (8page)

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Objectives : The purpose of this in vitro study was to evaluate the effect of firing cycles on the marginal and internal fit of metal ceramic crown. Methods : Ten same cases of stone models (abutment teeth 11) were manufactured. Ten cobalt-chrome cores were made per each models and the marginal and internal fit was evaluated through a silicone replica technique. The marginal and internal fit of specimens was measured twice. The first measurement was done after manufacturing cobalt-chrome alloy core and the second measurement was done after porcelain firing. T-test of paired sample for statistical analysis was executed with SPSS 12.0K for Windows (α=0.05). Results : Mean(SD) marginal and internal fit were 77.1(23.3) ㎛ for the cobalt-chrome alloy core group and 84.4(21.9) ㎛ for the metal-ceramic crown group. They were statistically significant differences between groups for marginal and internal fit (p<.05). Conclusions : All metal ceramic crowns showed marginal and internal fit ranged within the current clinical recommendations.

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