AutoresAritza Brizuela‐Velasco, Esteban Pérez-Pevida, Antonio Jiménez-Garrudo, Francisco Javier Gil-Mur, José María Manero, Miquel Punset, David Chávarri‐Prado, Markel Diéguez-Pereira, Francesca Monticelli
Este estudio compara las propiedades mecánicas, el comportamiento biomecánico y la capacidad de osteointegración de implantes dentales de aleación binaria Ti-15Zr con la aleación convencional Ti-6Al-4V. Se evaluaron mediante ultrasonido y análisis de elementos finitos, complementando con un estudio in vivo en conejos para determinar la integración ósea. Los resultados indican que la aleación Ti-15Zr presenta propiedades elásticas y de comportamiento biomecánico similares a la Ti-6Al-4V, sin diferencias significativas en el estrés o la deformación a nivel del implante y hueso. Sin embargo, se observó un porcentaje superior de unión implante-hueso (BIC) para la aleación Ti-15Zr a las 3 y 6 semanas. Esta información es relevante para la selección de materiales en implantología, sugiriendo una alternativa con potencial para mejorar la osteointegración temprana.
The objective of the study is to characterise the mechanical properties of Ti-15Zr binary alloy dental implants and to describe their biomechanical behaviour as well as their osseointegration capacity compared with the conventional Ti-6Al-4V (TAV) alloy implants. The mechanical properties of Ti-15Zr binary alloy were characterised using Roxolid© implants (Straumann, Basel, Switzerland) via ultrasound. Their biomechanical behaviour was described via finite element analysis. Their osseointegration capacity was compared via an in vivo study performed on 12 adult rabbits. Young’s modulus of the Roxolid© implant was around 103 GPa, and the Poisson coefficient was around 0.33. There were no significant differences in terms of Von Mises stress values at the implant and bone level between both alloys. Regarding deformation, the highest value was observed for Ti-15Zr implant, and the lowest value was observed for the cortical bone surrounding TAV implant, with no deformation differences at the bone level between both alloys. Histological analysis of the implants inserted in rabbits demonstrated higher BIC percentage for Ti-15Zr implants at 3 and 6 weeks. Ti-15Zr alloy showed elastic properties and biomechanical behaviours similar to TAV alloy, although Ti-15Zr implant had a greater BIC percentage after 3 and 6 weeks of osseointegration.
Brizuela‐Velasco A, Pérez-Pevida E, Jiménez-Garrudo A, Gil-Mur FJ, Manero JM, Punset M, et al. Mechanical Characterisation and Biomechanical and Biological Behaviours of Ti-Zr Binary-Alloy Dental Implants. BioMed Research International. 2017. doi:10.1155/2017/2785863
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