Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. Classify biomaterials and list some examples?
Biologic classification is based on tissue response and systemic toxicity effects of the implant and is divided into three classes of biomaterials:Biotolerant, bioinert, and bioactive
Biotolerant: such as PMMA are characterized by a thin fibrous tissue interface. The fibrous tissue layer develops as a result of the chemical products from leaching processes, leading to irritation of the surrounding tissues. Bioinert materials such as titanium, titanium alloys and alumina (Al2O3) are nearly chemically inert in the body and exhibit minimal chemical interaction with adjacent tissue. Tissue attachment with inert materials is through tissue growth into surface irregularities, by bone cement, or by press fitting into a defect.
Bioactive materials: Certain glasses, ceramics, and glass-ceramics that contain oxides of silicon, sodium, calcium, and phosphorus (SiO2, Na2O, CaO, and P2O5 ) form a chemical bond with bone, resulting in a strong mechanical implant/ bone bond. These materials are bond to bone (and in some cases to soft tissue) through a time-dependent, kinetic modification of the surface triggered by their implantation within living bone.
Select all that are true or correct regarding a buffer: alternately donating and accepting ions a set of chemicals that work together to resist pH change often a weak acid or base
Of which cells is the nervous tissue constituted? How is the generic function of this tissue related to the characteristics of the main cell type that forms it? The nervous tis
When ATP gives energy to the cellular metabolism it loses one of its phosphates and ADP reappears. ADP can also lose more phosphates and produce AMP (adenosine monophosphate) o
Many disease states are heralded by changes in the blood count Leukocytosis can be a sign of infection. Thrombocytopenia can result from drug toxicity. Pancytopenia is ge
Plants of the open water zone In this zone plants are restricted to the limnetic one and generally consist of phytoplankton such as dinoflagellates, blue green algae and green
Define the Principles of Periapical Surgery (PAS) 1. Avoid horizontal, sever angled vertical incision Because the collagen fibers of the mucoperiosteum are parallel to the to
Three molecules of ducose-6-phosphate yield 3 molecules of CO, and 3 molecules of five carbon residues (pentose sugar). The latter are converted ultimately to 2 molecules of g
Define Iron Factors affecting absorption of dietary iron? We have read earlier that iron in foods occurs either as haem or non-haem iron. Haem iron comprises of iron in combina
Water Logging Over saturation of soil with water is called water logging. If for any reason, the water-table rises close to the ground surface it is bad for plants and soil fer
What is circulation? Circulation is the movement of substances as nutrients and gases within blood vessels and cavities all by the organism.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd