Zirconia implant abutments: biomechanical behaviour
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[1] Universidad Complutense de Madrid
Universidad Complutense de Madrid
Madrid, España
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- Localización: Científica dental: Revista científica de formación continuada, ISSN 1697-6398, ISSN-e 1697-641X, Vol. 12, Nº. Extra 4 (Versión en inglés de los trabajos ganadores y los segundos clasificados de los premios de la revista), 2015, págs. 21-31
- Idioma: inglés
- Enlaces
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Resumen
The ceramic, aluminium oxide (alumina), wasintroduced in 1993, but the first fully ceramic abutment wasintroduced a year later, in 1994, and consisted of highly sintered alumina (CerAdapt, Nobel Biocare). However, the problem with this abutment was its fragility. The mechanical properties of zirconium oxide (zirconia) abutments were improved and they offered new opportunitiesfor restorations. Zirconia plays a vital role in modern biotechnology because of its inertness and excellent mechanical properties of strength and hardness. This ceramic abutment is manufactured from yttriastabilised zirconia (Y-TZP), which has been used in orthopaedic surgery for over 20 years. However, zirconia has not been used in the dentistry field for very long, so no long-term studies of its mechanical behaviour in the mouth have been conducted.
The overall objective of this work is to study the static strength and fatigue from in vitro tests on upright abutment specimen samples of the standard zirconia implant diameter made according to the standard UNE-EN ISO 14801.
The main findings of thisstudy are asfollows: all abutments break at the neck; all abutments can be used long-term in the anterior maxilla; and finally allstudies on prosthetic attachmentsshould be carried out using an established protocol (standard UNE-EN ISO 14801), to make comparisons easier between them.
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