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Evaluation of bone healing on sandblasted and Acid etched implants coated with nanocrystalline hydroxyapatite: an in vivo study in rabbit femur

Journal article
Authors Lory Melin Svanborg
Luiz Meirelles
Victoria Franke Stenport
Per Kjellin
Fredrik Currie
Martin Andersson
Ann Wennerberg
Published in International Journal of Dentistry
Volume 2014
Pages 197581
ISSN 1687-8728
Publication year 2014
Published at Institute of Odontology
Institute of Clinical Sciences, Department of Biomaterials
Pages 197581
Language en
Links dx.doi.org/10.1155/2014/197581
https://gup.ub.gu.se/file/147480
Subject categories Dentistry

Abstract

This study aimed at investigating if a coating of hydroxyapatite nanocrystals would enhance bone healing over time in trabecular bone. Sandblasted and acid etched titanium implants with and without a submicron thick coat of hydroxyapatite nanocrystals (nano-HA) were implanted in rabbit femur with healing times of 2, 4, and 9 weeks. Removal torque analyses and histological evaluations were performed. The torque analysis did not show any significant differences between the implants at any healing time. The control implant showed a tendency of more newly formed bone after 4 weeks of healing and significantly higher bone area values after 9 weeks of healing. According to the results from this present study, both control and nano-HA surfaces were biocompatible and osteoconductive. A submicron thick coating of hydroxyapatite nanocrystals deposited onto blasted and acid etched screw shaped titanium implants did not enhance bone healing, as compared to blasted and etched control implants when placed in trabecular bone.

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