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. 2019 Jun 23;12(12):2009.
doi: 10.3390/ma12122009.

Measurement of Fracture Strength of Zirconia Dental Implant Abutments with Internal and External Connections Using Acoustic Emission

Suet Yeo Soo  1   2 , Nikolaos Silikas  3 , Julian Satterthwaite  4
Affiliations

Measurement of Fracture Strength of Zirconia Dental Implant Abutments with Internal and External Connections Using Acoustic Emission

Suet Yeo Soo et al. Materials (Basel). .

Abstract

A single paragraph of about 200 words maximum. For research articles, abstracts should give a pertinent overview of the work. We strongly encourage authors to use the following style of structured abstracts, but without headings: (1) Background: Place the question addressed in a broad context and highlight the purpose of the study; (2) Methods: Describe briefly the main methods or treatments applied; (3) Results: Summarize the article's main findings; and (4) Conclusions: Indicate the main conclusions or interpretations. The abstract should be an objective representation of the article, it must not contain results which are not presented and substantiated in the main text and should not exaggerate the main conclusions. Please add in this section. The aim of the study was to investigate the fracture behaviour of four different groups of zirconia abutments with internal and external connections: (A) Astra Tech ZirDesign™ abutment on Astra Tech Implants, (B) Procera® Esthetic abutment on Nobel Biocare MK III Groovy Implants, (C) IPS e.max® on Straumann Implants, and (D) ZiReal® Posts on Biomet 3I implants. The load was applied on the assemblies using a Zwick universal testing machine: the initial and final failure loads and amplitude were recorded using acoustic emission technique. Mean initial and final failure force was found to be significantly different in each group (P < 0.001). IPS e.max® Straumann abutments exhibited the highest resistance to final fracture force compared to other abutment types. Acoustic emission can be used as one of the methods to detect fracture behaviour of implant abutments. There were no significant differences in fracture loads between the internal and externally connected zirconia abutments studied. However, externally connected abutments demonstrated screw loosening and some deformations.

Keywords: acoustic emission; external connection; fracture strength; implant abutments; internal connection.

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Conflict of interest statement

The authors declare no conflict of interest. The founding sponsors had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, and in the decision to publish the results”.

Figures

Figure 1
Figure 1
Implant-abutment assembly mounted on acrylic blocks.
Figure 2
Figure 2
Graphs of the load-time relationship and amplitude-time relationship produced by the Zwick and AE sensor respectively.
Figure 3
Figure 3
Comparison of initial and final failure force (N) of the assembly specimens.
Figure 4
Figure 4
Initial and final fracture amplitude (dB) of the assembly specimens.
Figure 5
Figure 5
Graph correlation of initial and final fracture force (N).
See this image and copyright information in PMC

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