Microtensile Bond Strength and Impact Energy of Fracture of CAD-Veneered Zirconia Restorations

被引:20
作者
Aboushelib, Moustafa N. [1 ,2 ,3 ]
de Kler, Marcel [2 ,3 ]
van der Zel, Jef M. [2 ,3 ]
Feilzer, Albert J. [2 ,3 ]
机构
[1] Alexandra Univ, Fac Dent, Dent Biomat Dept, Alexandria, Egypt
[2] Univ Amsterdam, Dept Dent Mat Sci, ACTA, Amsterdam, Netherlands
[3] Vrije Univ Amsterdam, Amsterdam, Netherlands
来源
JOURNAL OF PROSTHODONTICS-IMPLANT ESTHETIC AND RECONSTRUCTIVE DENTISTRY | 2009年 / 18卷 / 03期
关键词
CAD veneering; zirconia; press-on ceramic; MTBS; impact energy of fracture; DIFFERENT COMPONENTS; CROWNS; MODE; SIZE;
D O I
10.1111/j.1532-849X.2008.00412.x
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Purpose: With state-of-the-art CAD/CAM technology, the fabrication of large and complex zirconia frameworks is just a click away. On the other hand, veneering of the frameworks is still operator-dependent. The aim of this work was to evaluate CAD veneering of zirconia restorations in terms of zirconia veneer bond strength and impact energy of fracture in a step towards complete automation of the fabrication process. Materials and Methods: A new CAD/CAM system was used to fabricate a resin replica of the esthetic ceramic required to veneer a zirconia framework. The replica was seated on the zirconia framework and further processed using press-on technology. The bond strength between zirconia and the CAD veneer was evaluated using microtensile bond strength test. The impact energy of fracture of the specimens was also investigated. Manually layered zirconia specimens served as a control (alpha = 0.05). Results: There was no significant difference in the microtensile bond strength between zirconia and either of the used veneers (39 MPa). Even though the impact energy of fracture of the CAD-veneered and manually layered specimens was almost identical (0.13 J), the former demonstrated a cohesive fracture of the veneer, while the latter failed by delamination of the veneer ceramic. Conclusion: CAD veneering is a reliable method for veneering zirconia restorations.
引用
收藏
页码:211 / 216
页数:6
相关论文
共 24 条
[1]   Microtensile bond strength of different components of core veneered all-ceramic restorations [J].
Aboushelib, MN ;
de Jager, N ;
Kleverlaan, CJ ;
Feiler, AJ .
DENTAL MATERIALS, 2005, 21 (10) :984-991
[2]  
Aboushelib Moustafa N, 2008, J Prosthodont, V17, P9
[3]   Effect of loading method on the fracture mechanics of two layered all-ceramic restorative systems [J].
Aboushelib, Moustafa N. ;
de Jager, Niek ;
Kleverlaan, Cornelis J. ;
Feilzer, Albert J. .
DENTAL MATERIALS, 2007, 23 (08) :952-959
[4]   Microtensile bond strength of different components of core veneered all-ceramic restorations - Part II: Zirconia veneering ceramics [J].
Aboushelib, Moustafa N. ;
Kleverlaan, Cornelis J. ;
Feilzer, Albert J. .
DENTAL MATERIALS, 2006, 22 (09) :857-863
[5]  
Cohen J., 1988, Statistical Power Analysis for the Behavioral Sciences, V2nd, DOI [10.4324/9780203771587, DOI 10.4324/9780203771587]
[6]  
Dündar M, 2005, INT J PROSTHODONT, V18, P71
[7]   Comparison of two bond strength testing methodologies for bilayered all-ceramics [J].
Dundar, Mine ;
Ozcan, Mutlu ;
Gokce, Bulent ;
Comlekoglu, Erhan ;
Leite, Fabiola ;
Valandro, Luiz Felipe .
DENTAL MATERIALS, 2007, 23 (05) :630-636
[8]   Effects of flaw size and auto-glaze treatment on porcelain strength [J].
Griggs, JA ;
Thompson, JY ;
Anusavice, KJ .
JOURNAL OF DENTAL RESEARCH, 1996, 75 (06) :1414-1417
[9]   Strength, reliability and mode of fracture of bilayered porcelain/zirconia (Y-TZP) dental ceramics [J].
Guazza, M ;
Proos, K ;
Quach, L ;
Swain, MV .
BIOMATERIALS, 2004, 25 (20) :5045-5052
[10]  
Helvey Gregg A, 2006, Pract Proced Aesthet Dent, V18, P547