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Analysing the optimal value for titanium implant roughness in bone attachment using a tensile test

Paper ID Volume ID Publish Year Pages File Format Full-Text
12114 779 2003 6 PDF Available
Title
Analysing the optimal value for titanium implant roughness in bone attachment using a tensile test
Abstract

This study aims at studying the effect of surface roughness on bone attachment of coin-shaped titanium implants. All implants in this study were blasted with TiO2 particles of 180–220 μm, and then divided into three groups. One group had no further surface treatment whereas the other two groups were subsequently etched with hot hydrochloric acid (0.01 m or 1 m). The surface topography of the implant specimens was examined by SEM and by a confocal laser scanner for a numeric evaluation of Sa, St and Sdr. The ranging implants in the three groups differed significantly in surface structure. The implants with modified surfaces were then placed into the tibias of 12 rabbits (n=16). After 8 weeks healing, the attachment of bone to implants were examined using a standardised tensile test analysis. The implants that were only blasted (positive control) showed significantly better functional attachment (p<0.001) than the acid etched. Implant surfaces etched with 1 m HCl solution had the lowest retention in bone. There was a negative correlation between the increasing roughness and mechanical retention in bone of the implants in this study. The results support observations from earlier studies that suggested an optimal surface roughness for bone attachment, identified by in situ tensile tests and expressed as the arithmetic mean deviation (Sa), to be in the range between 3.62 and 3.90 μm and that a further attachment depended on mechanical interlocking between bone and implant.

Keywords
Coin shaped titanium implants; Surface roughness; Bone attachment; Acid etching; Tensile testing
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Analysing the optimal value for titanium implant roughness in bone attachment using a tensile test
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 24, Issue 25, November 2003, Pages 4559–4564
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us