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Early Osseointegration Events on Neoss® ProActive and Bimodal Implants: A Comparison of Different Surfaces in an Animal Model

Journal article
Authors G.A. Grossi-Oliveira
A.A. Antunes
C.N. Elias
A. Wennerberg
Lars Sennerby
L.A. Salata
Published in Clinical Implant Dentistry and Related Research
Volume 17
Issue 6
Pages 1060-1072
ISSN 1523-0899
Publication year 2015
Published at Institute of Odontology, Section 1
Pages 1060-1072
Language en
Keywords Animal model , Bone-implant interface , Implant surface , Surface properties , Surface topography
Subject categories Dentistry


© 2015 Wiley Periodicals, Inc. Background: Cell interactions, adherence, and osseointegration at the bone-implant interface can be directly influenced by the surface properties of the titanium implant. Purpose: To characterize osseointegration of Neoss® implants with conventional (control group) and hydrophilic (test group) surface treatments. Materials and Methods: Six Labrador dogs received Neoss implants with conventional and hydrophilic surfaces. The bone-implant interfaces were evaluated 1 and 4 weeks after implantation, and osseointegration was evaluated using histological, histomorphometric, fluorescence, and resonance frequency analyses. The surfaces were also subjected to topographic and hydrophilicity analyses. Results: The topographic analyses revealed increased surface roughness in the test group compared with the control group (surface area roughness 0.42 and 0.78μm, respectively, for control and test group surfaces; p≤.05). The wettability values were higher in the test group (contact angles 67.2° and 27.2° for the control and test group surfaces, respectively; p≤.05). Implants in the test group also exhibited better stability, more bone-implant contact, and increased bone area compared with implants in the control group. Conclusion: Neoss implants in the test group improved bone formation in the early stages of osseointegration compared with implants in the control group.

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