Load to failure of different zirconia implant abutments with titanium components |
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Authors: | Faye Mascarenhas Burak Yilmaz Edwin McGlumphy Nancy Clelland Jeremy Seidt |
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Institution: | 1. Assistant Professor, Department of Prosthodontics, Louisiana State University, School of Dentistry, New Orleans, La;2. Associate Professor, Division of Restorative Sciences, The Ohio State University College of Dentistry, Columbus, Ohio;3. Professor, Division of Restorative Sciences, The Ohio State University College of Dentistry, Columbus, Ohio;4. Professor, Division of Restorative sciences, The Ohio State University College of Dentistry, Columbus, Ohio;5. Research Scientist, Department of Mechanical and Aerospace engineering, The Ohio State University, Columbus, Ohio |
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Abstract: | Statement of problemAbutments with a zirconia superstructure and a titanium insert have recently become popular. Although they have been tested under static load, their performance under simulated mastication is not well known.PurposeThe purpose of this in vitro study was to compare the cyclic load to failure of 3 types of zirconia abutments with different mechanisms of retention of the zirconia to the titanium interface.Material and methodsFifteen implants (n=5 per system) and abutments (3 groups: 5 friction fit Frft]; 5 bonded; and 5 titanium ring friction fit Ringfrft]) were used. Abutments were thermocycled in water between 5°C and 55°C for 15 000 cycles and then cyclically loaded for 20 000 cycles or until failure at a frequency of 2 Hz by using a sequentially increased loading protocol up to a maximum of 720 N. The load to failure for each group was recorded, and 1-way analysis of variance was performed.ResultsThe mean load-to-failure values for the Frft group was 526 N, for the Bond group 605 N, and for the Ringfrft group 288 N. A statistically significant difference was found among all abutments tested (P<.05).ConclusionsAbutments with the bonded connection showed the highest load-to-failure value, and the abutment with the titanium ring friction fit connection showed the lowest load-to-failure value. |
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Keywords: | Corresponding author: Dr Faye Mascarenhas Louisiana State University Health Sciences Center School of Dentistry Department of Prosthodontics 1100 Florida Ave Box 222 New Orleans LA 70119 |
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