PMID: 18717163Aug 23, 2008Paper

Effect of preparation design on the fracture resistance of zirconia crown copings

Dental Materials Journal
Florian BeuerWolfgang Gernet

Abstract

The aim of this in vitro study was to evaluate the effects of different preparation designs on the fracture resistance of single-crown zirconia frameworks. To this end, maxillary molar dies of CrCo alloy were fabricated with five different preparation designs: shoulderless, slight and pronounced deep chamfer, beveled and non-beveled shoulder. Ten zirconia copings with a wall thickness of 0.4 mm were fabricated for each type of preparation. After cementation by glass ionomer cement, they were loaded until fracture. There were significant differences in the breaking load of the experimental groups (ANOVA, p < 0.01). The shoulder preparation had a mean breaking load of 2286 N, the shoulderless preparation 2041 N, the beveled shoulder 1722 N, the pronounced deep chamfer 1752 N, and the slight chamfer 1624 N. Based on the results of this study, a shoulder preparation is highly recommended whenever possible. Moreover, for endodontically treated teeth that are structurally compromised or which have anatomically limited areas, the slight chamfer preparation is an optimal recommendation.

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Citations

Apr 4, 2009·Clinical Oral Investigations·Florian BeuerMichael Naumann
Jun 17, 2014·Dental Materials : Official Publication of the Academy of Dental Materials·Caroline SachsFlorian Beuer
Oct 17, 2014·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Davide CortelliniMutlu Özcan
May 2, 2012·The Journal of Prosthetic Dentistry·Carlo E PoggioCarlo Ercoli
Dec 20, 2015·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Paolo VigoloSabrina Mutinelli
Nov 2, 2011·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Moustafa N Aboushelib
Sep 25, 2015·Clinical Oral Investigations·Florian BeuerMichael Stimmelmayr
May 30, 2016·The Journal of Prosthetic Dentistry·Conrad WinkelmeyerJuliana Marotti
Apr 22, 2017·Periodontology 2000·Jaafar Abduo, Karl M Lyons
Jul 7, 2017·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·D EdelhoffA Liebermann
Mar 30, 2018·Dental Materials Journal·Fumihiko WatanabeMakoto Ozawa
May 15, 2010·Dental Materials Journal·Zeynep OzkurtEnder Kazazoğlu
Jul 7, 2017·The Journal of Advanced Prosthodontics·Sibel CetikRamin Atash
Dec 1, 2018·Journal of Prosthodontic Research·C MonacoP Baldissara
Jan 4, 2020·The Journal of Advanced Prosthodontics·Meelad Basil Findakly, Haider Hasan Jasim
May 22, 2020·Clinical Oral Investigations·Oliver SchubertJan-Frederik Güth
Dec 20, 2020·Journal of the Mechanical Behavior of Biomedical Materials·Rong LiYuchun Sun
Dec 1, 2021·European Journal of Dentistry·Marwah Ismael Abdulazeez, Manhal A Majeed

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