Pore cross-section area on predicting elastic properties of trabecular bovine bone for human implants
| Autor: | María del Pilar Gutiérrez, Alfredo Maciel, Gerardo Presbítero, José Guzmán, Nadia Munguía, Cristina Piña |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Apparent density
Materials science Compressive Strength Biomedical Engineering Dentistry Bone tissue Bone and Bones Biomaterials Fractures Bone Bone Marrow medicine Animals Humans Elasticity (economics) Porosity Elastic modulus Bone Transplantation business.industry General Medicine Elasticity Bovine bone Trabecular bone medicine.anatomical_structure Compressive strength Calcium Cattle Stress Mechanical business Software Biomedical engineering |
| Zdroj: | Bio-medical materials and engineering. 25(1) |
| ISSN: | 1878-3619 |
| Popis: | A clear understanding of the dependence of mechanical properties of bone remains a task not fully achieved. In order to estimate the mechanical properties in bones for implants, pore cross-section area, calcium content, and apparent density were measured in trabecular bone samples for human implants. Samples of fresh and defatted bone tissue, extracted from one year old bovines, were cut in longitudinal and transversal orientation of the trabeculae. Pore cross-section area was measured with an image analyzer. Compression tests were conducted into rectangular prisms. Elastic modulus presents a linear tendency as a function of pore cross-section area, calcium content and apparent density regardless of the trabecular orientation. The best variable to estimate elastic modulus of trabecular bone for implants was pore cross-section area, and affirmations to consider Nukbone process appropriated for marrow extraction in trabecular bone for implantation purposes are proposed, according to bone mechanical properties. Considering stress-strain curves, defatted bone is stiffer than fresh bone. Number of pores against pore cross-section area present an exponential decay, consistent for all the samples. These graphs also are useful to predict elastic properties of trabecular samples of young bovines for implants. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|