Article
Mechanical behavior of single-layer ceramized zirconia abutments for dental implant prosthetic rehabilitation
Author/s | Jiménez Melendo, Manuel
Llena-Blasco, Oriol Bruguera, August Llena-Blasco, Jaime Yañez-Vico, Rosa Garcia Calderón, Manuel Luis Vaquero Aguilar, Cristina Velázquez Cayón, Rocío Trinidad Gutiérrez Pérez, José Luis Torres-Lagares, Daniel |
Department | Universidad de Sevilla. Departamento de Estomatología Universidad de Sevilla. Departamento de Física de la Materia Condensada |
Publication Date | 2014 |
Deposit Date | 2016-01-26 |
Abstract | Objectives: This study was undertaken to characterize the mechanical response of bare (as-received) and single layer ceramized zirconia abutments with both internal and external connections that have been developed to ... Objectives: This study was undertaken to characterize the mechanical response of bare (as-received) and single layer ceramized zirconia abutments with both internal and external connections that have been developed to enhanced aesthetic restorations. Material and Methods: Sixteen zirconia implant abutments (ZiReal Post®, Biomet 3i, USA) with internal and external connections have been analyzed. Half of the specimens were coated with a 0.5mm-thick layer of a low-fusing fluroapatite ceramic. Mechanical tests were carried out under static (constant cross-head speed of 1mm/min until fracture) and dynamic (between 100 and 400N at a frequency of 1Hz) loading conditions. The failure location was identified by electron microscopy. The removal torque of the retaining screws after testing was also evaluated. Results: The average fracture strength was above 300N for all the abutments, regardless of connection geometry and coating. In most of the cases (94%), failure occurred by abutment fracture. No significant differences were observed either in fatigue behavior and removal torque between the different abutment groups. Conclusions: Mechanical behavior of Zireal zirconia abutments is independent of the type of internal/external connection and the presence/absence of ceramic coating. This may be clinically valuable in dental rehabilitation to improve the aesthetic outcome of zirconia-based dental implant systems. |
Citation | Jiménez Melendo, M., Llena-Blasco, O., Bruguera, A., Llena-Blasco, J., Yañez-Vico, R., Garcia Calderón, M.L.,...,Torres-Lagares, D. (2014). Mechanical behavior of single-layer ceramized zirconia abutments for dental implant prosthetic rehabilitation. |
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