Survival Rate, Fracture Strength and Failure Mode of Ceramic Implant Abutments After Chewing Simulation

Butz, Frank, Heydecke, Guido, Okutan, Mehmet and Strub, Jorg (2005) Survival Rate, Fracture Strength and Failure Mode of Ceramic Implant Abutments After Chewing Simulation. Journal of Oral Rehabilitation, 32 11: 838-843. doi:10.1111/j.1365-2842.2005.01515.x

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Author Butz, Frank
Heydecke, Guido
Okutan, Mehmet
Strub, Jorg
Title Survival Rate, Fracture Strength and Failure Mode of Ceramic Implant Abutments After Chewing Simulation
Journal name Journal of Oral Rehabilitation   Check publisher's open access policy
ISSN 0305-182X
Publication date 2005-11
Sub-type Article (original research)
DOI 10.1111/j.1365-2842.2005.01515.x
Open Access Status File (Author Post-print)
Volume 32
Issue 11
Start page 838
End page 843
Total pages 6
Place of publication Oxford, U.K
Publisher Blackwell Publishing Ltd
Language eng
Subject 320803 Dental Technology
Abstract The aim of this study was to compare titanium-reinforced ZrO2 and pure Al2O3 abutments regarding their outcome after chewing simulation and static loading. Forty-eight standard diameter implants with an external hexagon were divided into three groups of 16 implants each and restored with three different types of abutments (group A: ZrO2 abutments with titanium inserts; group B: densely sintered high-purity Al2O3 abutments; group C: titanium abutments). All abutments were fixated on the implants with gold-alloy screws at 32 Ncm torque, and metal crowns were adhesively cemented onto the abutments. The specimens were exposed to 1.2 million cycles in a chewing simulator. Surviving specimens were subsequently loaded until fracture in a static testing device. Fracture loads (N) and fracture modes were recorded. A Wilcoxon Rank test to compare fracture loads among the 3 groups and a Fisher exact test to detect group differences in fracture modes were used for statistical evaluation (P<.05). All specimens but one of group B survived chewing simulation. No screw loosening occurred. The median fracture loads (+/- standard deviations) were as follows: Group A, 294 N (+/-53); group B, 239 N (+/-83), and group C, 324 N (+/-85). The smaller fracture loads in group B were statistically significant. The use of pure Al2O3 abutments resulted in significantly more abutment fractures. It is proposed that titanium-reinforced ZrO2 abutments perform similar to metal abutments, and can therefore be recommended as an esthetic alternative for the restoration of single implants in the anterior region. All-ceramic abutments made of Al2O3 possess less favorable properties.
Keyword dental implants
ceramic implant abutment
fracture strength
failure mode
survival rate
dynamic loading
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown
Additional Notes Originally published as F. Butz, G. Heydecke, M. Okutan and J. R. Strub (2005) Survival rate, fracture strength and failure mode of ceramic implant abutments after chewing simulation Journal of Oral Rehabilitation, 32 (11): 838-843. Copyright 2005 Blackwell Publishing. All rights reserved.

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Dentistry Publications
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Citation counts: TR Web of Science Citation Count  Cited 66 times in Thomson Reuters Web of Science Article | Citations
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Created: Wed, 12 Oct 2005, 10:00:00 EST by H. Mehmet Okutan on behalf of School of Dentistry