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초록보기

The computer-aided design/computer-aided manufacturing (CAD/CAM) system was introduced to shorten the production time of all-ceramic restorations and the number of patient visits. Among these types of ceramic for dental CAD/CAM, they have been processed into inlay, onlay, and crown shapes using leucite-reinforced glass-ceramics to improve strength. The purpose of this study was to observe the mechanical properties and microstructure of leucite-reinforced glass-ceramics for dental CAD/CAM. Two types of leucite-reinforced glass-ceramic blocks (IPS Empress CAD, Rosetta BM) were prepared with diameter of 13 mm and thickness of 1 mm. Biaxial flexural testing was conducted using a piston-on-three-ball method at a crosshead speed of 0.5 mm/min. Weibull statistics were used for the analysis of biaxial flexural strength. Fracture toughness was obtained using an indentation fracture method. Specimens were observed by field emission scanning electron microscopy to examine the microstructure of the leucite crystalline phase after acid etching with 0.5% hydrofluoric acid aqueous solution for 1 minute. The results of strength testing showed that IPS Empress CAD had a mean value of 158.1±8.6 MPa and Rosetta BM of 172.3±8.3 MPa. The fracture toughness results showed that IPS Empress CAD had a mean value of 1.28±0.19 MPa·m¹/² and Rosetta BM of 1.38±0.12 MPa·m¹/². The Rosetta BM sample exhibited higher strength and fracture toughness. Moreover, the crystalline phase size and ratio were increased in the Rosetta BM sample. The above results are expected to elucidate the basic mechanical properties and crystal structure characteristics of IPS Empress CAD and Rosetta BM. Additionally, they will help develop leucite-reinforced glass-ceramic materials for CAD/CAM.

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기사명 저자명 페이지 원문 목차
Motivational Interviewing Training Using Role Play in Dental Hygiene Students Ye Seul Han, Young Sik Cho pp.50-59

The Relationship between Oral Health and Stroke in Adults Based on the 6th (2015) Korea National Health and Nutrition Examination Survey Hae-Eun Shin, Eui-Jung Park, Eun-Kyung Jung, Eun-Kyong Kim, Min-Jeong Cho pp.1-8

The Relationship between Hormone Replacement Therapy and Periodontal Disease in Postmenopausal Women Eunsuk Ahn, Yunhee Lee pp.9-17

Analysis of Factors Affecting the Quality of Work Life of Dental Hygienists Based on the Culture-Work-Health Model Ji-Hyeon Park, Young-Sik Cho, Soon-Ryun Lim pp.32-41

Mechanical Properties and Microstructure of the Leucite-Reinforced Glass-Ceramics for Dental CAD/CAM Seon-Mi Byeon, Jae-Joo Song pp.42-49

Antimicrobial Activity of Korean Propolis Extracts on Oral Pathogenic Microorganisms Jiyeon Roh, Ki-Rim Kim pp.18-23

Effects of Critical Thinking Disposition and Empathy on Cultural Competency in Dental Hygiene Students Ji-Min Hwang, Ji-Hyoung Han pp.24-31

Quantitative Analysis of Oral Pathogenic Bacteria according to Smoking Using Real-Time PCR Eun-Suk Jeon, Hyo-Jin Heo, Hyo-Jin Ko pp.60-68

참고문헌 (29건) : 자료제공( 네이버학술정보 )

참고문헌 목록에 대한 테이블로 번호, 참고문헌, 국회도서관 소장유무로 구성되어 있습니다.
번호 참고문헌 국회도서관 소장유무
1 Relationship between elastic and mechanical properties of dental ceramics and their index of brittleness 네이버 미소장
2 Properties and Clinical Application of Three Types of Dental Glass-Ceramics and Ceramics for CAD-CAM Technologies 네이버 미소장
3 Influence of Low Temperature Degradation on Bond Strength of Yttria-Stabilized Tetragonal Zirconia Polycrystal Core to Veneering Ceramic 소장
4 Advances in dental ceramics. 네이버 미소장
5 Evolution of dental ceramics in the twentieth century 네이버 미소장
6 Sakaguchi RL, Powers JM: Craig's restorative dental materials. 13th ed. Elsevier Mosby, Philadelphia, pp.455-462, 2012. 미소장
7 Holand W, Beall GH: Glass-ceramic technology. 2nd ed. Wiley, Hoboken, 2012. 미소장
8 Clinical performance of bonded leucite-reinforced glass ceramic inlays and onlays after eight years. 네이버 미소장
9 Miyazaki T, Hotta Y, Kunii J, Kuriyama S, Tamaki Y: A review of dental CAD/CAM: current status and future perspectives from 20 years of experience. Dent Mater J 28: 44-56, 2009. https://doi.org/10.4012/dmj.28.44 미소장
10 Trost L, Stines S, Burt L: Making informed decisions about incorporating a CAD/CAM system into dental practice. J Am Dent Assoc 137 Suppl: 32S-36S, 2006. https://doi.org/10.14219/jada.archive.2006.0399 미소장
11 Crystallization and flexural strength optimization of fine-grained leucite glass-ceramics for dentistry 네이버 미소장
12 Quinn GD, Giuseppetti AA, Hoffman KH: Chipping fracture resistance of dental CAD/CAM restorative materials: part I--procedures and results. Dent Mater 30: e99-e111, 2014. https://doi.org/10.1016/j.dental.2014.02.010 미소장
13 Translucency and biaxial flexural strength of four ceramic core materials 네이버 미소장
14 Anstis GR, Chantikul P, Lawn BR, Marshall DB: A critical evaluation of indentation techniques for measuring fracture toughness: I, Direct crack measurements. J Am Ceram Soc 64: 533-538, 1981. https://doi.org/10.1111/j.1151-2916.1981.tb10320.x 미소장
15 Im YW, Jun SK, Kim SC, et al.: Standardized test methods for mechanical properties of dental prosthetic/restorative materials and their applications. Korean J Dent Mater 42: 259-270, 2015. https://doi.org/10.14815/kjdm.2015.42.3.259 미소장
16 Fracture toughness of two lithium disilicate dental glass ceramics 네이버 미소장
17 Sin CH, Hwang SS, Han GS: Shear bond strength of veneering ceramic and zirconia core according to the surface treatments. J Dent Hyg Sci 13: 487-492, 2013. 미소장
18 Kim KB, Kim JH: A study on the shear bond strength of veneering ceramics to the lithium disilicate (IPS e.max CAD) core. J Dent Hyg Sci 13: 290-295, 2013. 미소장
19 The fracture resistance of a CAD/CAM Resin Nano Ceramic (RNC) and a CAD ceramic at different thicknesses 네이버 미소장
20 Surface morphology and fracture in handpiece adjusting of a leucite-reinforced glass ceramic with coarse diamond burs 네이버 미소장
21 Dynamic fatigue and strength characterization of three ceramic materials 네이버 미소장
22 Flexure Tests on Dental Ceramics 네이버 미소장
23 Influence of Test Method on Failure Stress of Brittle Dental Materials 네이버 미소장
24 A systematic review of the cost of data collection for performance monitoring in hospitals 네이버 미소장
25 Lin WS, Ercoli C, Feng C, Morton D: The effect of core material, veneering porcelain, and fabrication technique on the biaxial flexural strength and weibull analysis of selected dental ceramics. J Prosthodont 21: 353-362, 2012. https://doi.org/10.1111/j.1532-849X.2012.00845.x 미소장
26 Weibull analysis and flexural strength of hot-pressed core and veneered ceramic structures 네이버 미소장
27 A statistical approach to the mechanical testing of dental materials 네이버 미소장
28 Fracture behavior of lithia disilicate- and leucite-based ceramics 네이버 미소장
29 Harrer W, Danzer R, Morrell R: Influence of surface defects on the biaxial strength of a silicon nitride ceramic: increase of strength by crack healing. J Eur Ceram Soc 32: 27-35, 2012. https://doi.org/10.1016/j.jeurceramsoc.2011.07.019 미소장

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