In vitro lifetime of zirconium dioxide-based crowns veneered using Rapid Layer Technology

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Details zur Publikation

Autor(en): Riedel C, Wendler M, Belli R, Petschelt A, Lohbauer U
Zeitschrift: European Journal of Oral Sciences
Jahr der Veröffentlichung: 2019
Band: 127
Heftnummer: 2
Seitenbereich: 179-186
ISSN: 0909-8836


Abstract

Rapid Layer Technology (RLT) uses computer-aided design/computer-aided manufacturing (CAD/CAM) to manufacture a veneer layer that is adhesively bonded to the zirconia framework, avoiding firing steps during the fabrication process and thus preventing build-up of residual stresses. This work studied, using sliding contact fatigue, the in vitro lifetime of restorations produced using RLT compared with restorations produced using conventional veneering techniques. Zirconia copings were veneered with a conventional hand-layering method (VM9) using a fast (n = 16) or a slow (n = 16) cooling protocol, or with RLT. For the latter, the veneers were CAD/CAM fabricated using a feldspathic reinforced-glass (Vitablocs Mark II; n = 16) or a polymer-infiltrated reinforced-glass network (Enamic; n = 16) and adhesively bonded to the zirconia frameworks. Crowns thus obtained were submitted to sliding contact fatigue against a steatite indenter in a chewing simulator until failure. A Kaplan-Meier survival analysis was conducted. None of the hand-layered restorations survived after a 2 x 10(6)-cycle interval, whereas no fractures in the RLT groups were observed. Vitablocs Mark II veneers survived for a longer testing period (3.5 x 10(6) cycles) than their Enamic counterparts (2.5 x 10(6) cycles) owing to their superior wear behavior. The RLT represents an efficient method to veneer zirconia frameworks by reducing processing steps and, more importantly, increasing the lifetime of the restorations.


FAU-Autoren / FAU-Herausgeber

Belli, Renan Dr.
Zahnklinik 1 - Zahnerhaltung und Parodontologie
Lohbauer, Ulrich Prof. Dr.
Medizinische Fakultät
Petschelt, Anselm Prof. Dr.
Lehrstuhl für Zahn-,Mund- und Kieferheilkunde, insbesondere Zahnerhaltung, Parodontologie und Kinderzahnheilkunde
Riedel, Christopher
Zahnklinik 1 - Zahnerhaltung und Parodontologie


Autor(en) der externen Einrichtung(en)
Universidad de Concepcion


Zitierweisen

APA:
Riedel, C., Wendler, M., Belli, R., Petschelt, A., & Lohbauer, U. (2019). In vitro lifetime of zirconium dioxide-based crowns veneered using Rapid Layer Technology. European Journal of Oral Sciences, 127(2), 179-186. https://dx.doi.org/10.1111/eos.12604

MLA:
Riedel, Christopher, et al. "In vitro lifetime of zirconium dioxide-based crowns veneered using Rapid Layer Technology." European Journal of Oral Sciences 127.2 (2019): 179-186.

BibTeX: 

Zuletzt aktualisiert 2019-26-03 um 22:08