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Biomechanical and histological behavior of zirconia implants. An experiment in the rat.

Cited 83 time in Web of Science Cited 82 time in Scopus
Authors
Kohal, Ralf J.; Wolkewitz, Martin; Hinze, Marc; Han, Jung-Suk; Bächle, Maria; Butz, Frank
Issue Date
2009
Publisher
Wiley-Blackwell
Citation
Clin. Oral Impl. Res. 20:333–339
Keywords
biomechanical push-in testosseointegrationratstitanium implantzirconia implant
Abstract
Objective: This study aimed at evaluating the integration of zirconia implants in a rat
femur model.
Material and methods: Zirconia implants with two distinct surface topographies were
compared with titanium implants with similar topographies. Titanium and zirconia
implants were placed into the femurs of 42 male Sprague–Dawley rats. Four groups of
implants were utilized: machined zirconia implants, zirconia implants with a rough surface,
machined titanium implants, and titanium implants with an electrochemically roughened
surface. After a healing period of 28 days, the load-bearing capacity between the bone and
the implant surface was evaluated by a push-in test. Additionally, after a healing period of
14 and 28 days, respectively, bone tissue specimens containing the implants were processed
and histologically analyzed.
Results: The mean mineralized bone-to-implant contact showed the highest values after 14
and 28 days for the rough surfaces (titanium: 36%/45%; zirconia: 45%/59%). Also, the pushin
test showed higher values for the textured implant surfaces, with no statistical
significance between titanium (34 N) and zirconia (45.8 N).
Conclusions: Within the limits of the animal investigation presented, it was concluded that
all tested zirconia and titanium implant surfaces were biocompatible and osseoconductive.
The presented surface modification of zirconia implants showed no difference regarding
the histological and biomechanical results compared with an established electrochemically
modified titanium implant surface.
ISSN
0905-7161
Language
English
URI
https://hdl.handle.net/10371/68891
DOI
https://doi.org/10.1111/j.1600-0501.2008.01656.x
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Appears in Collections:
College of Dentistry/School of Dentistry (치과대학/치의학대학원)Dept. of Dentistry (치의학과)Journal Papers (저널논문_치의학과)
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