Fourteen titanium dental implants (Tioblast(TM)) were implanted singly in the proximal tibia of New Zealand rabbits for 120 days. A bone defect was surgically produced and filled with Bio-Oss(R) around six of these implants. After the animals were sacrificed and their organs harvested, bone segments were fixed and methacrylate embedded after the push-in test had been performed. Microradiography was performed on longitudinal sections of the implants, whereas scanning electron microscope analysis was performed on the remaining embedded half-implants using secondary electrons only. The results showed that the implants were apically and coronally surrounded by bone, whether Bio-Oss(R) was used or not. Fractures were evident through the newly formed bone and between the pre-existing and newly formed bone. Some fracture lines propagated through the bone and stopped at the implant surface without continuing along the bone-titanium interface. Detachment between the implant and the bone occurred at the coronal extremity of the implants and along its cervical region. These results highlight the fact that the bone-titanium interface has a high resistance to loading. It exhibited greater resistance than the newly formed bone and seems to behave in a manner similar to the cement lines of osteons.
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|Anno di pubblicazione:||2003|
|Titolo:||Behavior of the bone-titanium interface after push-in testing: A morphological study|
|Autori:||D. Zaffe; R. Rodriguez y Baena; S. Rizzo; C. Brusotti; M. Soncini; R. Pietrabissa; F. Cavani; V. Quaglini|
|Autori interni:||ZAFFE, Davide |
|Digital Object Identifier (DOI):||10.1002/jbm.a.10366|
|Rivista:||JOURNAL OF BIOMEDICAL MATERIALS RESEARCH. PART A|
|Appare nelle tipologie:||Articolo su rivista|
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