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Titanium metals form direct bonding to bone after alkali and heat treatments

Paper ID Volume ID Publish Year Pages File Format Full-Text
12970 823 2001 9 PDF Available
Title
Titanium metals form direct bonding to bone after alkali and heat treatments
Abstract

In this article we evaluated the bone-bonding strengths of titanium and titanium alloy implants with and without alkali and heat treatments using the conventional canine femur push-out model. Four kinds of smooth cylindrical implants, made of pure titanium or three titanium alloys, were prepared with and without alkali and heat treatments. The implants were inserted hemitranscortically into canine femora. The bone-bonding shear strengths of the implants were measured using push-out test. At 4 weeks all types of the alkali- and heat-treated implants showed significantly higher bonding strength (2.4–4.5 MPa) than their untreated counterparts (0.3–0.6 MPa). At 12 weeks the bonding strengths of the treated implants showed no further increase, while those of the untreated implants had increased to 0.6–1.2 MPa. Histologically, alkali- and heat-treated implants showed direct bonding to bony tissue without intervening fibrous tissue. On the other hand, untreated implants usually had intervening fibrous tissue at the interface between bone and the implant. The early and strong bonding to bone of alkali- and heat-treated titanium and its alloys without intervening fibrous tissue may be useful in establishing cementless stable fixation of orthopedic implants.

Keywords
Titanium; Titanium alloy; Alkali and heat treatment; Cementless fixation
First Page Preview
Titanium metals form direct bonding to bone after alkali and heat treatments
Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 22, Issue 18, September 2001, Pages 2525–2533
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering