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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한치과보철학회 The Journal of Advanced of Prosthodontics The Journal of Advanced of Prosthodontics 제7권 제3호
- 발행연도
- 2015.1
- 수록면
- 257 - 263 (7page)
이용수
초록· 키워드
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PURPOSE. In this study, we aimed to evaluate the amount of marginal gap with two different substructure materials using identical margin preparations. MATERIALS AND METHODS. Twenty stainless steel models with a chamfer were prepared with a CNC device. Marginal gap measurements of the galvano copings on these stainless steel models and Co-Cr copings obtained by a laser-sintering method were made with a stereomicroscope device before and after the cementation process and surface properties were evaluated by scanning electron microscopy (SEM). A dependent t-test was used to compare the mean of the two groups for normally distributed data, and twoway variance analysis was used for more than two data sets. Pearson’s correlation analysis was also performed to assess relationships between variables. RESULTS. According to the results obtained, the marginal gap in the galvano copings before cementation was measured as, on average, 24.47 ± 5.82 μm before and 35.11 ± 6.52 μm after cementation; in the laser-sintered Co-Cr structure, it was, on average, 60.45 ± 8.87 μm before and 69.33 ± 9.03 μm after cementation. A highly significant difference (P<.001) was found in marginal gap measurements of galvano copings and a significant difference (P<.05) was found in marginal gap measurements of the laser-sintered Co-Cr copings. According to the SEM examination, surface properties of laser sintered Co-Cr copings showed rougher structure than galvano copings. The galvano copings showed a very smooth surface. CONCLUSION. Marginal gaps values of both groups before and after cementation were within the clinically acceptable level. The smallest marginal gaps occurred with the use of galvano copings.
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참고문헌 (27)
참고문헌 신청
Buso L / 2004 / Marginal fit of electroformed copings before and after the coction of the porcelain / Braz J Oral Sci 3 : 409 ~ 413
Comlekoglu ME / 2008 / Di?hekimli?inde Alerji: Dokum Ala?ımları, Polimerler ve Seramikler, [Allergy in Dentistry: Casting Alloys, Polymers and Ceramics] / EU Di?hek Fak Der
Covington JS / 1985 / Quantization of nickel and beryllium leakage from base metal casting alloys / J Prosthet Dent 54 : 127 ~ 136
Eroglu Z / 2011 / Investigation of fracture strength of galvano ceramic, metal ceramic three unit bridges / J Health Sci 20 : 92 ~ 98
Hauk V / 1997 / Structural and residual stress analysis by nondestructive methods: Evaluation-Application-Assessment / Elsevier : 53 ~ 72
Comlekoglu ME / 2008 / Di?hekimli?inde Alerji: Dokum Ala?ımları, Polimerler ve Seramikler, [Allergy in Dentistry: Casting Alloys, Polymers and Ceramics] / EU Di?hek Fak Der
Covington JS / 1985 / Quantization of nickel and beryllium leakage from base metal casting alloys / J Prosthet Dent 54 : 127 ~ 136
Eroglu Z / 2011 / Investigation of fracture strength of galvano ceramic, metal ceramic three unit bridges / J Health Sci 20 : 92 ~ 98
Hauk V / 1997 / Structural and residual stress analysis by nondestructive methods: Evaluation-Application-Assessment / Elsevier : 53 ~ 72
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