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Biological responses of anodized titanium implants under different current voltages

Cited 42 time in Web of Science Cited 45 time in Scopus
Authors
CHOI, J. W.; HEO, S. J.; KOAK, J. Y.; KIM, S. K.; LIM, Y. J.; KIM, S. H.
Issue Date
2006
Publisher
Wiley-Blackwell
Citation
Journal of Oral Rehabilitation 2006;33:889–897
Keywords
anodic oxidationvoltagehistomorphometryremoval torquetitanium implant
Abstract
The oxide layer of a titanium surface is very stable, and seems to result in excellent biocompatibility and successful osseointegration. The purpose of this study was to investigate the effects of high anodic oxidation voltages on the surface characteristics of titanium implants and the biologic response of rabbit tibiae. Bone tissue responses were evaluated by removal torque tests and histomorphometric analysis. Screw-shaped implants with microthreads were made of commercially pure titanium (Grade II). We prepared anodized implants under 300 V (group I), 400 V (group II), 500 V (group III) and 550 V (group IV). The surface characteristics of specimens were inspected according to three categories: surface morphology, surface roughness and oxide layer thickness. The screw-shaped implants were installed in rabbit tibiae. The removal torque values were measured and histomorphometric analysis was done after 1- and 3-month healing periods. Data indicate that as anodic oxidation voltage increased above 300 V, oxide layer thickness increased rapidly and pore size also increased. The roughness values of the implants increased with voltage up to 500 V, but decreased at 550 V. In the removal torque test, group III showed higher values than groups I and II at a statistically significant level (P < 0.05) after a 1-month healing period. In histomorphometric analysis, groups III and IV, after a 3-month healing period, showed greater bone to implant contact ratios for the total implant surface than did group I (P < 0.05).
ISSN
0305-182X
Language
English
URI
https://hdl.handle.net/10371/68899
DOI
https://doi.org/10.1111/j.1365-2842.2006.01669.x
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College of Dentistry/School of Dentistry (치과대학/치의학대학원)Dept. of Dentistry (치의학과)Journal Papers (저널논문_치의학과)
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