Mechanical and histomorphometric evaluations of titanium implants with different surface treatments inserted in sheep cortical bone

Giavaresi, Gianluca; Fini, Milena; Cigada, A.; Chiesa, Roberto; Rondelli, G.; Rimondini, Lia; Torricelli, Paola; Aldini, N. Nicoli; Giardino, Roberto

doi:10.1016/s0142-9612(02)00548-3

Cited by 116 publications

(82 citation statements)

References 35 publications

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“…The configuration of microgeometrical properties of implant porous coatings outer layer has crucial influence on the bone-implant osteointegration [12,13,14]. Roughening of the implant surface by porous coating changes the physicochemical and biomechanical properties in bone-implant interface [15] (see Figure 3).…”

Section: Introductionmentioning

confidence: 99%

Computer Aided Stereometric Evaluation of Porostructuralosteoconductive Properties of Intra-Osseous Implant Porous Coatings

Uklejewski¹,

Winiecki²,

Rogala³

2013

Metrology and Measurement Systems

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The proper interaction of bone tissue -the natural porous biomaterial -with a porous coated intra-osseous implant is conditioned, among others, by the implant porous coating poroaccessibility for bone tissue adaptive ingrowth. The poroaccessibility is the ability of implant porous coating outer layer to accommodate the ingrowing bone tissue filling in its pore space and effective new formed bone mineralizing in the pores to form a biomechanically functional bone-implant fixation. The functional features of the microtopography of intra-osseous implant porous surfaces together with the porosity of pore space of the outer layer of the porous coating are called by bioengineers the porostructural-osteoconductive properties of the porous coated implant. The properties are crucial for successful adaptive bone tissue ingrowth and further long-term (secondary) biomechanical stability of the boneimplant interface. The poroaccessibility of intra-osseous implants porous coating outer layers is characterized bythe introduced in our previous papers -set of stereometric parameters of poroaccessibility: the effective volumetric porosity I Vef , the index of the porous coating space capacity V PM , the representative surface porosity I Srep , the representative pore size p Srep , the representative angle of the poroaccessibility :rep and the bone-implant interface adhesive surface enlargement index \. Presented in this paper, an original method of evaluation of the porostructural-osteoconductive properties of intra-osseous implant porous coatings outer layer by means of the parameters of poroaccessibility was preliminary verified during experimental tests performed on the representative examples of porous coated femoral stems and acetabular cups of various hip endoprostheses. The computer-aided stereometric evaluation of the microstructure of implant porous coatings outer layer can be now realized by the authoring application software PoroAccess_1.0 elaborated in our research team in Java programming language.

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Section: Introductionmentioning

confidence: 99%

Computer Aided Stereometric Evaluation of Porostructuralosteoconductive Properties of Intra-Osseous Implant Porous Coatings

Uklejewski¹,

Winiecki²,

Rogala³

2013

Metrology and Measurement Systems

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“…3,4 Contact angle measurements give values ranging from 0% (hydrophilic) to 140% (hydrophobic) for titanium implant surfaces. 3,5,6 In a recent animal study, Buser et al 3 ] found that a hydrophilic SLA surface gave higher bone-to-implant contact than regular SLA. Nevertheless, previous in vivo studies performed by Albrektsson andco-workers 7,8 failed to demonstrate higher osseointegrationusing hydrophilic surfaced dental implants.…”

Section: Chemical Composition Of the Surface Of Dental Implantsmentioning

confidence: 99%

“…cpTi Ra = 0.22±0.01a 55.4±4.1 5,107 Ti6Al4V Ra = 0.23±0.01a 56.3±2.7 5,107 TPS Ra = 7.01±2.09 n.d. Plasma-sprayed HA coating Ra = 1.06±0.21 57.4±3.2 6,108 Biomimetic CaP coating Ra = 1.83±0. 64 13.4±0.17 This work a Machined and polished surfaces.…”

Section: Surface Roughness Of Dental Implantsmentioning

confidence: 99%

Surface characteristics of titanium dental implants for Rapid osseointegration

Surender¹,

K²,

Nath³

et al. 2011

IJDA

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“…8,9) The biological response of Ti implants demonstrates that the MAO process constitutes one of the best methods for modifying the implant surface. [10][11][12][13][14][15] The phase and morphology of the oxide layer are dependent on the voltage applied during the oxidation treatment. 16) MAO-Ti alloys show good biocompatibility and Ca-P inducement capability in vivo and could accelerate bone tissue growth and shorten the osseointegration time.…”

Section: Introductionmentioning

confidence: 99%

Micro Arc Oxidation of Ti-15Zr-7.5Mo Alloy

et al. 2016

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Ti-15Zr-7.5Mo alloy was melted and its structure and mechanical properties were evaluated, followed by micro-arc oxidation (MAO) treatment to add bioactivity. Melted Ti-15Zr-7.5Mo alloy was consisted of mainly β containing of metastable α and ω phases. The Vickers hardness of the alloy was 420 HV and larger than those of Ti-6Al-4V alloy (320 HV) and Ti-29Nb-13Ta-4.6Zr ally (TNTZ) (180 HV). The Young s modulus of the alloy was about 104-112 GPa and almost the same as that of Ti-6Al-4V alloy (113 GPa) and larger than that of TNTZ (80 GPa). The MAO treatment was performed in a mixed electrolyte of 0.1-mol L −1 calcium glycerophosphate and 0.15-mol L −1 calcium acetate with a positive maximum voltage of 400 V and a 31.2 mA cm −2 for 600 s. Porous composite oxide of Ti, Zr, and Mo containing large amounts of Ca and P was formed on Ti-15Zr-7.5Mo alloy by micro arc oxidation (MAO) treatment. Zr was preferentially enriched and Ti and Mo were depleted in the oxide layer. Pore size was larger than that of CP Ti. The ability of calcium phosphate formation of the alloy in Hanks solution after MAO treatment was less than those of CP Ti and TNTZ. It is necessary for the alloy to conduct a chemical treatment to accelerate bone formation.

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Mechanical and histomorphometric evaluations of titanium implants with different surface treatments inserted in sheep cortical bone

Cited by 116 publications

References 35 publications

Computer Aided Stereometric Evaluation of Porostructuralosteoconductive Properties of Intra-Osseous Implant Porous Coatings

Computer Aided Stereometric Evaluation of Porostructuralosteoconductive Properties of Intra-Osseous Implant Porous Coatings

Surface characteristics of titanium dental implants for Rapid osseointegration

Micro Arc Oxidation of Ti-15Zr-7.5Mo Alloy

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