Ti Alloy Surface Modifications and Coatings: An Update

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Abstract:

Since 1952 when Branemark first reported osseointegration of titanium (Ti) with bone, many academic and industrial research activities have endeavored to improve the efficacy of Ti or Ti alloy (Ti6Al4V) by modifying the chemistry, topography and design of the implant surface. Strong bonding between implant and host tissue minimize the micromovements that promote fibrous tissue formation at the implant interface that may lead to implant failure. Surface design include lateral holes perpendicular to the implant axis, grooves, variations of spacings between ridges, etc. Physico-mechanical means of surface modification is by grit-blasting with various abrasives (alumina, silica, apatitic abrasive), laser ablation, spark discharge, etc. Chemical modifications include: acid etching, treatment with alkali, treatment with fluoride, coating with titanium or with calcium phosphate (by plasma spray, electromagnetic sputtering, electrochemical deposition). A review of studies on Ti or Ti alloy implants with different surfaces showed the following methods to enhance osseointegration and greater bone formation: (1) grit-blasting with apatitic abrasive; (2) acid-etching with mixed acids; (3) adjusting plasma-spray parameter to get a higher HA/ACP ratio in the coating; (4) employing electrochemical deposition (with pulse modulation) or precipitation to obtain thin coating with homogeneous composition; and/or (5) Ftreatment.

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Key Engineering Materials (Volumes 361-363)

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741-744

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November 2007

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© 2008 Trans Tech Publications Ltd. All Rights Reserved

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[1] Branemark PI, Hansson BO, Adell R et al (1977). Scand J Plast Reconstr Surg 11: S16.

Google Scholar

[2] Schwartz Z, Martin JY, Dean DD, et al (1996). J Biomed Mater Res 30: 145-156.

Google Scholar

[3] Buser B, Schenk RK, Steinman S, Fiorellini JP, et a (1991). J Biomed Mater Res 25: 889- 902.

Google Scholar

[4] Geesink RG, Hoefnagels NH (1995). J Bone Jt Surg Br 77: 534-547.

Google Scholar

[5] Golec TS, Krauser JT (1992). Dental Clinics of North America 36: 39-65.

Google Scholar

[6] Salgado T, LeGeros JP, Wang JL (1998). Bioceramics 11: 683-686.

Google Scholar

[7] LeGeros JP, Daculsi G, LeGeros RZ (1996). Proc 25th Annual International Soc Biomaterials.

Google Scholar

[8] Ishikawa K, Miyamoto Y, Nagayama M, Asaoka K (1997). J Biomed Mater Res (Appl Biomater) 38: 129-134.

Google Scholar

[9] Mueller W-D, Gross U, Fritz T, et al (2003). Clin Oral Impl Res 14: 349-356.

Google Scholar

[10] LeGeros RZ, LeGeros JP, Kim Y, Kijkowska R et al (1995). Biocer Mat Appl 48: 173-189.

Google Scholar

[11] LeGeros RZ, Kim YE, Kijkowska R, et al (1998). Bioceramics 11 : 181-184.

Google Scholar

[12] Lin S, LeGeros RZ, LeGeros JP (2003). J Biomed Mater Res 66A: 819-828. patent.

DOI: 10.1002/jbm.a.10072

Google Scholar

[13] Rohanizadeh R, Al-Sadeq M, LeGeros RZ (2004). J Biomed Mater Res 71A: 343-352.

DOI: 10.1002/jbm.a.30171

Google Scholar

[14] Park J, LeGeros RZ, LeGeros JP (2005). J Dent Res 84 (Spec Iss A): abstract no. 1917. (Provisional patent, August 2005).

Google Scholar

[15] Alsilmi AY, LeGeros JP, LeGeros RZ (2003). J Dent Res 82 (Spec Iss B): abstract no. 2112. (Provisional patent, August 2005).

Google Scholar

[16] Nakagawa M, Zhang L, Udoh K Matsuya S, Ishikawa K (in press). J Mater Sci: Mater Med.

Google Scholar

[17] Nishio K, Neo M, Akyama H, et al (2000). J Biomed Mater Res 52: 652-661.

Google Scholar

[18] Rohanizadeh R, LeGeros RZ, Harsono M, Benavid A (2005). J Biomed Mater Res 72A: 428- 438. Provisional patent, September 2004).

DOI: 10.1002/jbm.a.30258

Google Scholar

[19] Ellingsen JE (1995). J Mat Science Mat Medicine 6: 749-753.

Google Scholar

[20] Wergedahl JE< Lau KHW, Baylink DJ (1988). Clin Orhop Rel Res 233: 274-282.

Google Scholar

[21] Inoue M, LeGeros RZ, Inoue M, et al (2004). J Biomed Mater Res 70A: 585-593.

Google Scholar