PMID: 9444704Jan 28, 1998Paper

Effects of irradiation on the biomechanics of osseointegration. An experimental in vivo study in rats

Scandinavian Journal of Plastic and Reconstructive Surgery and Hand Surgery
L O OhrnellP Thomsen

Abstract

The present study reports on the late effects of increasing doses of radiation on the biomechanics of commercially pure titanium implants (fixtures) installed in the proximal tibia in 26 rats. Twelve weeks after various doses (10, 20, 30, and 35 Gy) of irradiation, the fixtures were inserted into rat tibiae, and after another eight weeks these were tested mechanically in vivo. Acute dose dependent skin reactions developed after all doses except 10 Gy, but most subsided within two to three weeks. There was a statistically significant reduction in torsion but the pull-out load was not significantly reduced for single doses up to 30 Gy. Histological analysis showed that bone remodelling was impaired. Shear stresses and shear moduli were estimated for the bone-implant interface and in the surrounding bone tissue. These estimated stresses and moduli were not found to be correlated to the dose of radiation.

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Feb 1, 2012·The Journal of International Medical Research·C DemirelA Yildiz
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Jan 16, 2014·Journal of Applied Biomaterials & Functional Materials·Arto P KoistinenReijo Lappalainen
Jun 29, 1999·The Journal of Prosthetic Dentistry·M T Marunick, E D Roumanas

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