Skip to main content

OCT and shear-force evaluations of zirconia Fixed Partial Prosthesis processed with a conventional CAD/CAM technology

Zaharia, C. and Gabor, A. and Sinescu, C. and Topala, F. I. and Negrutiu, M. L. and Levai, C. M. and Duma, V. F. and Bradu, A. and Podoleanu, A.Gh. (2016) OCT and shear-force evaluations of zirconia Fixed Partial Prosthesis processed with a conventional CAD/CAM technology. In: Todea, Darinca Carmen and Podoleanu, Adrian G.H. and Duma, Virgil-Florin, eds. Sixth International Conference on Lasers in Medicine. Proceedings of SPIE, 16 (62). SPIE Society of Photo-Optical Instrumentation Engineers, Bellingham, Washington, p. 967010. ISBN 978-1-62841-893-4. (doi:10.1117/12.2192980) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:60073)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://doi.org/10.1117/12.2192980

Abstract

Introduction. Dental ceramics show better biocompatibility and aesthetic properties in dental constructs with regard to metals. However, they also have an insufficient mechanical stability, as well as low resistance limits due to their fragility. Taking into account these aspects, glass infiltrated with ceramic materials such as alumina (i.e., zirconiareinforced ceramics) is being nowadays considered a better material for full fixed partial prostheses (FPPs) than ceramics: the former has a higher mechanical resistance, which makes it more appropriate for restoration areas, where there is an increased mechanical stress. The interest for zirconia is growing due both to its resistance and to the possibility to develop such prostheses using the CAD/CAM technology.

Results and discussions. All the test samples survived a dynamic load of 1.2 x 107 cycles and a thermal cycle mixer simulator version; signs of failure in terms of fracture lines were observed in all samples. The average value of the force necessary to break the FPPs obtained from the tests is 1750 N.

Conclusions. Conventional metal-ceramic fixed partial dentures are still considered the standard for edentulous spaces in the posterior region. Therefore, the resistance of metal-ceramic fixed partial dentures has served in this study as a guide for new ceramics tests. All the values from this study conducted in FPP with zirconia frames were much lower than the values reported for metal ceramic fixed partial dentures (i.e., 2500-3000 N), but higher that 1000 N, which is considered the lowest resistance point to be utilized in the rear region of the oral cavity. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only

Item Type: Book section
DOI/Identification number: 10.1117/12.2192980
Divisions: Faculties > Sciences > School of Physical Sciences
Depositing User: Matthias Werner
Date Deposited: 25 Jan 2017 13:35 UTC
Last Modified: 26 Jan 2020 04:09 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/60073 (The current URI for this page, for reference purposes)
Podoleanu, A.Gh.: https://orcid.org/0000-0002-4899-9656
  • Depositors only (login required):