Evaluating the Performance of Truncated Gaussian Method for Three-Dimensional Reconstruction of the Pore Microstructure of Titanium Scaffolds

Moreira, Anderson Camargo; Fernandes, Celso Peres; Oliveira, Marize Varella de; Ribeiro, Alexandre Antunes; Mantovani, Iara Frangiotti; Medeiros, Laura Rigoni; Mattila, Keijo; Lyra, Rodrigo

doi:10.1615/jpormedia.2021033762

Cited by 3 publications

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“…According to Al-Raoush and Papadopoulos [69], porosity is one important approach used to determine REV, in which a sample is considered a REV if its porosity is constant over different sizes of the sample. To determine REV, aleatory sub-volumes (cubes), which were systematically enlarged, were taken at random positions inside the analyzed 3D image, and their porosities were determined [70].…”

Section: Representative Elementary Volume (Rev)mentioning

confidence: 99%

The effect of pores and connections geometries on bone ingrowth into titanium scaffolds: an assessment based on 3D microCT images

Moreira¹,

Fernandes²,

Oliveira³

et al. 2021

Biomed. Mater.

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In order to support bone tissue regeneration, porous biomaterial implants (scaffolds) must offer chemical and mechanical properties, besides favorable fluid transport. Titanium implants provide these requirements, and depending on their microstructural parameters, the osteointegration process can be stimulated. The pore structure of scaffolds plays an essential role in this process, guiding fluid transport for neo-bone regeneration. The objective of this work was to analyze geometric and morphologic parameters of the porous microstructure of implants and analyze their influences in the bone regeneration process, and then discuss which parameters are the most fundamental. Bone ingrowths into two different sorts of porous titanium implants were analyzed after 7, 14, 21, 28, and 35 incubation days in experimental animal models. Measurements were accomplished with x-ray microtomography image analysis from rabbit tibiae, applying a pore-network technique. Taking into account the most favorable pore sizes for neo-bone regeneration, a novel approach was employed to assess the influence of the pore structure on this process: the analyses were carried out considering minimum pore and connection sizes. With this technique, pores and connections were analyzed separately and the influence of connectivity was deeply evaluated. This investigation showed a considerable influence of the size of connections on the permeability parameter and consequently on the neo-bone regeneration. The results indicate that the processing of porous scaffolds must be focused on deliver pore connections that stimulate the transport of fluids throughout the implant to be applied as a bone replacer.

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Section: Representative Elementary Volume (Rev)mentioning

confidence: 99%

The effect of pores and connections geometries on bone ingrowth into titanium scaffolds: an assessment based on 3D microCT images

Moreira¹,

Fernandes²,

Oliveira³

et al. 2021

Biomed. Mater.

Self Cite

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Stochastic simulation of geological cross-sections from boreholes: A random field approach with Markov Chain Monte Carlo method

Yang,

Chu,

et al. 2023

Engineering Geology

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Restoration and Design of Ice Sculpture Structure following Multivision Sensor and Three‐Dimensional Reconstruction Technology

Liu

Zhang

2021

Journal of Sensors

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The purpose of the study is to improve the structure restoration and design of ice sculptures. This study discusses the concept and artistic expression of ice sculpting based on the relevant theoretical knowledge of visual sensing technology and three-dimensional reconstruction technology. Based on this, the ice sculpture structure restoration and design model based on multivision sensors and three-dimensional reconstruction technology is constructed, and the model is compared with the manual test. The results show that the ice sculpture structure restoration and design model based on a multivision sensor and three-dimensional reconstruction technology is feasible and has high efficiency and stability compared with artificial ice sculpture restoration. In the experiment of structure reconstruction and restoration of an ice sculpture, the manual group 1 spends 237 minutes, the manual group 2 spends 252 minutes, and the time spent by the model group is very stable, which is about 139 minutes. Due to the difference in manual group personnel, their carving time is also different. As the carving continues, the possibility of errors made by the two manual groups increases. Therefore, ice sculpture structure restoration and design based on multivision sensors and three-dimensional reconstruction technology will provide a reference for the study in the field of ice sculpture structure restoration and design.

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Evaluating the Performance of Truncated Gaussian Method for Three-Dimensional Reconstruction of the Pore Microstructure of Titanium Scaffolds

Cited by 3 publications

References 0 publications

The effect of pores and connections geometries on bone ingrowth into titanium scaffolds: an assessment based on 3D microCT images

The effect of pores and connections geometries on bone ingrowth into titanium scaffolds: an assessment based on 3D microCT images

Stochastic simulation of geological cross-sections from boreholes: A random field approach with Markov Chain Monte Carlo method

Restoration and Design of Ice Sculpture Structure following Multivision Sensor and Three‐Dimensional Reconstruction Technology

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