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!
Explain in brief about Polymers
In comparison to metals and ceramics, polymers are weak and flexible. These are not popular as dental implant materials. Examples of polymeric materials include PMMA, silicone rubber, polyethylene, Poly-Lactic Acid, polysulfone and poly tetrafluoroethylene. The polymer most commonly used is polymethyl methacrylate (PMMA). Initially, solid polymers were used but they appear to have only moderate attachment and are eventually exfoliated. A porous PMMA structure is formed by sandblasting the outer surface. Polyhydroxyethylmethacrylate (HEMA) is manufactured as a porous sponge which, on implantation, becomes invaded with fibrous tissue.
Polymers are chosen mainly as additive for beneficial secondary purposes such as structural isolation or introduction of shock absorbing qualities in load bearing metallic implants. Their most frequent use is still for non-load bearing applications in maxillofacial reconstruction. Certain "bioresorbable" polymers (Poly Lactic Acid) show potential as temporary implant materials that induce healing and bony in growth.
What are the chemical substances that compose the plasma membrane? Ans) The major constituents of the plasma membrane are phospholipids, proteins and carbohydrates. The phosphol
Explain the Dietary fibre and colon cancer? The relationship between colorectal cancer and dietary fibre remains complex. Although a cause-and-effect relationship between fibre
Determine the types of blood There are three types of blood cells. They are Red Blood Corpuscles (RBC), White Blood Corpuscles (WBC) or leucocytes and blood platelets or thromb
respiration
two types of amoebas waste and how they get rid of them
Define Protein Requirement at Different Stages of Life Cycle? Methods of Estimating and Assessing Protein Requirements at Different Stages of Life Cycle In this section, we
Explain venous pulsation? Venous Pulsation: Normally the jugular venous pulsation faithfully reflects the pressure changes in right atrium. It is described as a, x, c, x, v, y,
Q. What are the target tissues and target organs of each adenohypophyseal hormone? GH- bones, muscles and cartilages, Prolactin- mammary glands, ACTH- the cortical portion of t
List three ways that DNA technology could be used to improve the lives of humans. Answers could include: identifying human remains, determining a person's paternity, tracing h
Induction of disease resistance in plants by heat-shock The fungus Cladosporium cucumerinum infects cucumber and causes disease in the plant. However, if seedling of cucumber
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: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd