열-가압을 이용한 금속 도재관과 전통적인 금속 도재관의 변연 적합도 비교 연구|RISS 상세보기

다국어 초록 (Multilingual Abstract)

Purpose: The purpose of this in vitro study was to compare the marginal adaptation of a ceramic-pressed-to-metal restoration with traditional metal-ceramic restoration. Materials and methods: Duplicating the prepared resin tooth, 20 metal dies were fabricated. Twenty metal copings of 2 groups which were metal ceramic restoration and pressed to metal restoration were fabricated. The marginal opening of each coping was measured with Microscope (BX 60M-36E $41D^{(R)}$: Olympus, Japan). After porcelain build-up, the marginal opening of metal ceramic restoration and pressed to metal restoration ($PoM^{(R)}$: Ivoclar vivadent., Liechtenstein) were also evaluated in the same method. The measurements were analyzed using Wilcoxon Signed Ranks test and Mann-Whitney U test. Results: Within the limits of this study, the results were as follows. 1. Metal-ceramic restorations in coping state ($64.93{\pm}12.48\;{\mu}m$) in compared with Metal ceramic restorations after porcelain build-up ($63.43{\pm}12.86\;{\mu}m$) had no significant difference in marginal adaptation. 2. Pressed-metal-ceramic restorations in coping state ($50.00{\pm}12.28\;{\mu}m$) in compared with Pressed metal ceramic restorations after porcelain build-up ($56.72{\pm}13.80\;{\mu}m$) had no significant difference in marginal adaptation. 3. Metal-ceramic restorations in compared Pressed-metal-ceramic restorations had no significant difference in marginal adaptation. Conclusion: Pressed-metal-ceramic restorations have the advantage of being technically less change through using of the lost-wax technique and this allows for the convenience of a full-contour ceramic wax-up as opposed to the more technique-sensitive layering method. Pressed-metal-ceramic restorations may be considered in clinic on the basis of the result of this study and the advantage of this system.

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참고문헌 (Reference)

1 McLean JW, "The estimation of cement film thickness by an in vivo technique" 131 : 107-111, 1971

2 Brecker SC, "Porcelain baked to gold a new medium in prosthodontics" 6 : 801-810, 1956

3 Gardner FM, "Margins of complete crowns-literature review" 48 : 396-400, 1982

4 Leong D, "Marginal fit of machine- milled titanium and cast titanium single crowns" 7 : 440-447, 1994

5 Goldin EB, "Marginal fit of leucite-glass pressable ceramic restorations and ceramic-pressed-to-metal restorations" 93 : 143-147, 2005

6 Christensen GJ, "Marginal fit of gold inlay castings" 16 : 297-305, 1966

7 Holmes JR, "Marginal fit of castable ceramic crowns" 67 : 594-599, 1992

8 Tinschert J, "Marginal fit of alumina-and zirconia-based fixed partial dentures produced by a CAD/CAM system" 26 : 367-374, 2001

9 Gemalmaz D, "Marginal fit changes during porcelain firing cycles" 73 : 49-54, 1995

10 Bindl A, "Marginal and internal fit of all-ceramic CAD/CAM crown-copings on chamfer preparations" 32 : 441-447, 2005