Literature DB >> 11938506

The effect of substrate roughness and hydroxyapatite coating thickness on implant shear strength.

M Svehla1, P Morberg, W Bruce, B Zicat, W R Walsh.   

Abstract

This study examined the role of substrate preparation and hydroxyapatite (HA) coating thickness on bone ongrowth and shear strength in a bilateral bicortical sheep model. Plasma-sprayed and grit-blasted titanium implants with different thickness HA coatings were examined at 4, 8, 12, and 26 weeks after implantation. Shear strength increased with time for all implants. Plasma-sprayed implants were superior to grit-blasted implants at all time points. The 100-microm-thick HA layer used in the present study provided greater fixation and ongrowth and less resorption compared with the 50-microm-thick layer. We did not observe any advantage in using a thicker HA coating for the titanium substrates examined.

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Year:  2002        PMID： 11938506     DOI： 10.1054/arth.2002.30410

Source DB:  PubMed          Journal:  J Arthroplasty        ISSN： 0883-5403            Impact factor:   4.757


  9 in total

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4.  Osseointegration of porous titanium implants with and without electrochemically deposited DCPD coating in an ovine model.

Authors:  Dong Chen; Nicky Bertollo; Abe Lau; Naoya Taki; Tomofumi Nishino; Hajime Mishima; Haruo Kawamura; William R Walsh
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Authors:  William Robert Walsh; Matthew Henry Pelletier; Nicky Bertollo; Vedran Lovric; Tian Wang; Per Morberg; William Chase Harington Parr; Dario Bergadano
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7.  In vivo evaluation of osseointegration ability of sintered bionic trabecular porous titanium alloy as artificial hip prosthesis.

Authors:  Xiaowei Bai; Ji Li; Zhidong Zhao; Qi Wang; Ningyu Lv; Yuxing Wang; Huayi Gao; Zheng Guo; Zhongli Li
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8.  Modification of Ti6Al4V substrates with well-defined zwitterionic polysulfobetaine brushes for improved surface mineralization.

Authors:  Pingsheng Liu; Emily Domingue; David C Ayers; Jie Song
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9.  Does PEEK/HA Enhance Bone Formation Compared With PEEK in a Sheep Cervical Fusion Model?

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  9 in total

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