Characterization of Implantation's Biomaterials Based on the Patient and Doctor Expectations

Abstract

The aim of this research is to characterize the biomaterials for different implant applications in human body. Biomaterials have been used in different parts of human body such as hips, bones, joints, stents, etc. As these materials are using in different parts of human body, they need to represent properties compatible to the required part which is called biocompatibility. Even the expectations of the patient and doctor from the biomaterials implantation surgery can seriously affect the selection of biomaterials. For an instance, if the patient is too old, they may need to use a biomaterial that may dissolve in human body thus the second surgery for implant removal can be eliminated for the patient convenience. The selection of biomaterials that can offer suitable properties is of high significance. In some cases, they need to be tough like bones and joints with enough stiffness. In some implantations, they need to be flexible like stents for heart valves. In some of the cases, they need to be anti-corrosion due to the hostile environment in human body fluid. On the other hand, in some cases they need to dissolve in human body to eliminate the implantation removal surgery. Furthermore, it seems necessary to evaluate the biomaterials based on their fatigue life because they are subjected to cyclic loads in human body. The objective of this study is to characterize the properties of different biomaterials that can help the doctor and the patient to select the best biomaterials based on their expectations from the implantation surgery.

Silica Aerogel-Polycaprolactone Scaffolds for Bone Tissue Engineering

“…On the other hand, PCL presents itself with a high density (~1145 kg/m 3 ). Moreover, according to the literature, the natural bone density is 1700–20,000 kg/m 3 [ 46 , 47 , 48 ]. According to the results presented in Table 2 , composites with a silica/PCL ratio of 0.5:1 showed lower density values than those of 0.25:1; this behavior is expected due to an increase in silica when compared with the former composite.…”

Investigation of the mechanical and corrosion properties of Mg-Hydroxyapatite composite by addition of rare-earth oxide particulates for biomedical applications

“…The liberation of hydrogen gas tends to form gas pockets, which raises the local pH level and further delays the healing of the host tissue. 60,61 This can be reduced by improving the material’s corrosion resistance. The evolution rate increased with time and became constant after the sixth day of immersion due to the formation of hard intermetallic across the grain boundaries of the matrix.…”

Curiosidades e implicaciones tecnológicas de la hidroxiapatita sintética

“…Cuando realizamos alguna actividad como correr o brincar, nuestros huesos reciben un gran esfuerzo. Sin embargo, debido a sus características estructurales y propiedades mecánicas como son su módulo de Young (3-20 MPa), tenacidad a la fractura (3-6 MPa m 1/2 ) y elongación en rotura (1-7%), los huesos tienen la capacidad de soportar estos movimientos (Anvari, 2018). No obstante, su resistencia a la tensión (80-150 MPa) y compresión (130-180 MPa) tiene un límite, y si superamos ese valor al realizar alguna actividad, los huesos fallarán originando una lesión, denominada fractura (Fyhrie, 2010).…”