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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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Purpose: This study was conducted to comparative evaluate the marginal and internal gap of three-unit metal frameworks(Co-Cr) fabricated by wax milling method and digital light projection method of CAD/CAM systems. Methods: All the specimens were fabricated by three different fabrication methods: conventional wax up with casting(CWC), milled wax block with casting(MWC), digital light projection with casting(DLPC) (n=10 each). The marginal and internal fits of specimens were examined using a replica technique. The light-body silicone thickness was measured at 8 reference points(each abutment: 16 measurements). All measurements were conducted by a stereomicroscope. Digital photo were taken at $150{\times}$ magnification and then analyzed using a measurement software. The Mann-Whitney test was used for analyzing the results. Results: Statistically significant differences were found between the fabrication methods(p<0.001). The mean(SD) is ${\mu}m$ for fabrication methods, the mean marginal fit were recorded respectively, CWC 63(38), MWC group 50(33), DLPC 103(54) and the mean internal fit CWC 96(47), MWC group 116(41), DLPC 138(66). Conclusion : The marginal and internal fit were statistically different according to the fabrication methods(p<0.001). In all fabrication methods, the greatest misfit was found the occlusal area of all specimens.
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참고문헌 (18)
참고문헌 신청
Abduo J / 2010 / Fit of zirconia fixed partial denture: a systematic review / J Oral Rehabil 37:866~876
Borba M1 / 2013 / Evaluation of the adaptation of zirconia-based fixed partial dentures using micro-CT technology / Braz Oral Res 27(5):396~402
Bhaskaran E / 2013 / Comparative Evaluation of Marginal and Internal Gap of Co–Cr Copings Fabricated from Conventional Wax Pattern, 3D Printed Resin Pattern and DMLS Tech: An In Vitro Study / J Indian Prosthodont Soc 13:189~195
Holmes JR / 1989 / Considerations in measurement of marginal fit / J Prosthet Dent 62:405~408
Holmes JR / 1992 / Marginal fit of castable ceramic crowns / J Prosthet Dent 67:594~599
Borba M1 / 2013 / Evaluation of the adaptation of zirconia-based fixed partial dentures using micro-CT technology / Braz Oral Res 27(5):396~402
Bhaskaran E / 2013 / Comparative Evaluation of Marginal and Internal Gap of Co–Cr Copings Fabricated from Conventional Wax Pattern, 3D Printed Resin Pattern and DMLS Tech: An In Vitro Study / J Indian Prosthodont Soc 13:189~195
Holmes JR / 1989 / Considerations in measurement of marginal fit / J Prosthet Dent 62:405~408
Holmes JR / 1992 / Marginal fit of castable ceramic crowns / J Prosthet Dent 67:594~599
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