We are using cookies to implement functions like login, shopping cart or language selection for this website. Furthermore we use Google Analytics to create anonymized statistical reports of the usage which creates Cookies too. You will find more information in our privacy policy.
OK, I agree I do not want Google Analytics-Cookies
The International Journal of Prosthodontics
Login:
username:

password:

Plattform:

Forgotten password?

Registration

Int J Prosthodont 31 (2018), No. 5     8. Oct. 2018
Int J Prosthodont 31 (2018), No. 5  (08.10.2018)

Page 451-452, doi:10.11607/ijp.5817, PubMed:30180229


Fracture Strength of Ceramic Posterior Occlusal Veneers for Functional Rehabilitation of an Abrasive Dentition
von Maltzahn, Nadine Freifrau / El Meniawy, Omar Ibrahim / Breitenbuecher, Niko / Kohorst, Philipp / Stiesch, Meike / Eisenburger, Michael
Purpose: To evaluate the load at fracture and influence of artificial aging of posterior teeth occlusal veneers ("table tops") made of two different ceramics.
Materials and Methods: A total of 80 table tops were produced from feldspathic ceramic (VM) and zirconia-reinforced lithium silicate ceramic (CD) using computer-aided design/computer-assisted manufacturing (CAD/CAM). Half of the specimens from each ceramic were aged prior to the load test.
Results: Mean ± standard deviation (SD) load at fracture was significantly higher for CD (1,571.1 N ± 297.0 N) than for VM (573.6 N ± 86.4 N) (P < .001). After aging, load at fracture increased significantly to 1,819.0 N (± 310.6 N) for CD and to 745.2 N (± 168.3 N) for VM.
Conclusion: The use of zirconia-reinforced lithium silicate ceramic for molar nonprep table tops should be uncomplicated according to the high load-at-fracture values. Mechanical stability of either ceramic is not compromised by aging.