Platform-Switching for Cemented Versus Screwed Fixed Dental Prostheses: Reliability and Failure Modes: An In Vitro Study

2015 ◽  
Vol 18 (4) ◽  
pp. 830-839 ◽  
Author(s):  
Rodolfo Brunieira Anchieta ◽  
Lucas Silveira Machado ◽  
Ronaldo Hirata ◽  
Estevam Augusto Bonfante ◽  
Paulo G. Coelho
2017 ◽  
Vol 28 (2) ◽  
pp. e599-e603 ◽  
Author(s):  
Joana Schönberger ◽  
Kurt-Jürgen Erdelt ◽  
Daniel Bäumer ◽  
Florian Beuer

2020 ◽  
Vol 7 (1) ◽  
pp. 25-31
Author(s):  
Hani M. Mouafaq ◽  
◽  
Shakhawan K. Kadir ◽  

2018 ◽  
Vol 55 (3) ◽  
pp. 361-363
Author(s):  
Daniel Alexandru Pop ◽  
R. Malaescu ◽  
Liviu Marsavina ◽  
Tiberiu Hosszu ◽  
Raul Rotar ◽  
...  

The aim of this in vitro study is to compare the load-to-fracture performance of polymethyl methacrylates (PMMA) provisional restorations manufactured with a traditional laboratory technique in comparison to a computer-assisted design and computer-assisted manufacturing (CAD-CAM) technique. Five interim three-unit fixed dental prostheses were fabricated with the conventional indirect technique, on a standard typodont. The same model was scanned with an intraoral scanner and the digital design of identical fixed dental prostheses was made. Then other five interim three-unit fixed dental prostheses were milled from PMMA CAD/CAM blocks with an in office milling machine. All specimens were tested for flexural strength in a universal testing machine, and the maximum load to fracture was measured. For the conventional provisional restorations, the load to fracture was 121.16 � 24.6, in comparison to CAD/CAM interim restorations, for which the load to fracture was 728.88 � 228.7. Within the limitations of this study, one can conclude that CAD/CAM provisional restorations present a higher fracture load than the conventional manufactured interim restorations.


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