Fracture Strength of Yttria-Stabilized Zirconium-Dioxide (Y-TZP) Fixed Dental Prostheses (FDPs) with Different Abutment Core Thicknesses and Connector Dimensions

2013 ◽  
Vol 22 (5) ◽  
pp. 377-382 ◽  
Author(s):  
Marcus J. Ambré ◽  
Fredrik Aschan ◽  
Per Vult von Steyern
2009 ◽  
Vol 101 (4) ◽  
pp. 239-247 ◽  
Author(s):  
Wael Att ◽  
Futoshi Komine ◽  
Thomas Gerds ◽  
Jörg Rudolf Strub

2012 ◽  
Vol 108 (4) ◽  
pp. 214-222 ◽  
Author(s):  
Ariel J. Raigrodski ◽  
Alika Yu ◽  
Gerard J. Chiche ◽  
J.L. Hochstedler ◽  
Lloyd A. Mancl ◽  
...  

Author(s):  
Bader Alghamdi ◽  
Abdulrahman Alahmadi ◽  
Fahad Alamri ◽  
Mohamed Elmoafy ◽  
Salah Yousief ◽  
...  

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 259
Author(s):  
Julian Nold ◽  
Christian Wesemann ◽  
Laura Rieg ◽  
Lara Binder ◽  
Siegbert Witkowski ◽  
...  

Computer-aided design and computer-aided manufacturing (CAD–CAM) enable subtractive or additive fabrication of temporary fixed dental prostheses (FDPs). The present in-vitro study aimed to compare the fracture resistance of both milled and additive manufactured three-unit FDPs and bar-shaped, ISO-conform specimens. Polymethylmethacrylate was used for subtractive manufacturing and a light-curing resin for additive manufacturing. Three (bars) and four (FDPs) different printing orientations were evaluated. All bars (n = 32) were subjected to a three-point bending test after 24 h of water storage. Half of the 80 FDPs were dynamically loaded (250,000 cycles, 98 N) with simultaneous hydrothermal cycling. Non-aged (n = 40) and surviving FDPs (n = 11) were subjected to static loading until fracture. Regarding the bar-shaped specimens, the milled group showed the highest flexural strength (114 ± 10 MPa, p = 0.001), followed by the vertically printed group (97 ± 10 MPa, p < 0.007). Subtractive manufactured FDPs revealed the highest fracture strength (1060 ± 89 N) with all specimens surviving dynamic loading. During artificial aging, 29 of 32 printed specimens failed. The present findings indicate that both printing orientation and aging affect the strength of additive manufactured specimens. The used resin and settings cannot be recommended for additive manufacturing of long-term temporary three-unit FDPs.


2010 ◽  
Vol 26 (1) ◽  
pp. 67-75 ◽  
Author(s):  
Christian Mehl ◽  
Klaus Ludwig ◽  
Martin Steiner ◽  
Matthias Kern

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