Porous shape memory dental implant by reactive sintering of TiH2–Ni-Urea mixture

Akbarinia, Shahriar; Sadrnezhaad, S.K.; Hosseini, Seyed Alireza

doi:10.1016/j.msec.2019.110213

Cited by 10 publications

(2 citation statements)

References 39 publications

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“…In addition, the mechanical response of bone tissue around implants also depends on the direction and magnitude of the applied load, as well as the quantity/quality of both bones and implants (design, material, production routs, etc.) [40][41][42].…”

Section: Calculated Sss For Installed All Zygomatic Implants and Dent...mentioning

confidence: 99%

Computer simulation of stress-strain states in zygomatic bones after complex installation of implants

Dibirov,

Drobyshev,

Kharazyan

et al. 2023

Frattura Ed Integrità Strutturale

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The research addresses evaluation of stress-strain state (SSS) in the “zygomatic bones–implants–denture base” system by varying the type and number of the zygomatic implants, as well as applying loads. The load magnitude was varied over a wide range, characteristic of the mastication process. Changing the adhesion conditions at the “zygomatic implant–bone tissue” interface varied both the level of maximum stress and the location of the critical stress concentrator. The local violation of the integrity of bone tissue in the skull was one of the key reasons for the redistribution of stresses in the “zigomatic implantdenture base” system. Such a phenomenon should be primarily taken into account when choosing the standard sizes of installed zygomatic implants in order to reduce the compliance of weakened areas of the skull (as the basis of the load-bearing structure). Based on the results of the FEM-based computer simulation, the algorithm was proposed for planning prosthetic treatment, which involves the iterative method for selecting both size and location of installing zygomatic implants depending on the results of the SSS calculation and the onset of a critical condition (primarily in bone tissue at the contact area with zygomatic implants).

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Section: Calculated Sss For Installed All Zygomatic Implants and Dent...mentioning

confidence: 99%

Computer simulation of stress-strain states in zygomatic bones after complex installation of implants

Dibirov,

Drobyshev,

Kharazyan

et al. 2023

Frattura Ed Integrità Strutturale

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“…Titanium (Ti) and its alloys are forefront materials for biomedical applications because of their decent biocompatibility, excellent mechanical properties, and corrosion resistance [1][2][3][4][5]. These characteristics make titanium a promising candidate for orthopedic implants.…”

Section: Introductionmentioning

confidence: 99%

Bioinspired TiO₂/chitosan/HA coatings on Ti surfaces: biomedical improvement by intermediate hierarchical films

Rahnamaee¹,

Seyedkhani²,

Saed³

et al. 2022

Biomed. Mater.

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The most common reasons for hard-tissue implant failure are structural loosening and prosthetic infections. Hence, to fix the first problem, different bioinspired coatings were applied to the titanium alloy surfaces in this study, including dual acid-etched, anodic TiO2 nanotubes array (TNTs), anodic hierarchical titanium oxide, micro- and nanostructured hydroxyapatite (HA) layers, and HA/chitosan (HA/CS) nanocomposite coating. XRD and FTIR analysis demonstrated that the in situ HA/chitosan nanocomposite formed successfully. The MTT assay showed that all samples had excellent cell viability, with cell proliferation rates ranging from 120-150% after 10 days. The hierarchical coating demonstrated superhydrophilicity (θ ≈ 0°) and increased the wettability of the metallic Ti surface by more than 120%. The friction coefficient of all fabricated surfaces was within the range of natural bone's mechanical behavior. The intermediate hierarchical oxide layer increased the adhesion strength of the HA/chitosan coating by more than 60%. The Hierarchical middle oxide layer caused the mechanical stability of HA/CS during the 1000 m of friction test. The microhardness of HA/CS (22.5 HV) and micro-HA (25.5 HV) coatings was comparable to that of human bone. An intermediate hierarchical oxide-based mechanism for improving adhesion strength in HA/CS coatings was presented.

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Constitutive modeling of porosity and grain size effects on superelasticity of porous nanocrystalline NiTi shape memory alloy

Zhu,

Lei,

Wan

et al. 2023

Acta Mech

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Porous shape memory dental implant by reactive sintering of TiH2–Ni-Urea mixture

Cited by 10 publications

References 39 publications

Computer simulation of stress-strain states in zygomatic bones after complex installation of implants

Computer simulation of stress-strain states in zygomatic bones after complex installation of implants

Bioinspired TiO₂/chitosan/HA coatings on Ti surfaces: biomedical improvement by intermediate hierarchical films

Constitutive modeling of porosity and grain size effects on superelasticity of porous nanocrystalline NiTi shape memory alloy

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Porous shape memory dental implant by reactive sintering of TiH2–Ni-Urea mixture

Cited by 10 publications

References 39 publications

Computer simulation of stress-strain states in zygomatic bones after complex installation of implants

Computer simulation of stress-strain states in zygomatic bones after complex installation of implants

Bioinspired TiO2/chitosan/HA coatings on Ti surfaces: biomedical improvement by intermediate hierarchical films

Constitutive modeling of porosity and grain size effects on superelasticity of porous nanocrystalline NiTi shape memory alloy

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Bioinspired TiO₂/chitosan/HA coatings on Ti surfaces: biomedical improvement by intermediate hierarchical films