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Open AccessArticle

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

1
Centre for Restorative Dentistry, Faculty of Dentistry, The National University of Malaysia, Selangor 43600, Malaysia
2
Dentistry, School of Medical Sciences, University of Manchester, Manchester M13 9PL, UK
*
Author to whom correspondence should be addressed.
Materials 2019, 12(12), 2009; https://doi.org/10.3390/ma12122009
Received: 11 June 2019 / Revised: 19 June 2019 / Accepted: 20 June 2019 / Published: 23 June 2019
(This article belongs to the Collection Dental Biomaterials)
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. View Full-Text
Keywords: fracture strength; implant abutments; internal connection; external connection; acoustic emission fracture strength; implant abutments; internal connection; external connection; acoustic emission
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MDPI and ACS Style

Soo, S.Y.; Silikas, N.; Satterthwaite, J. Measurement of Fracture Strength of Zirconia Dental Implant Abutments with Internal and External Connections Using Acoustic Emission. Materials 2019, 12, 2009.

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