Already have an account? Get multiple benefits of using own account!
Login in your account..!
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.
Explain the Food Applications of guar Guar imparts smoothness to ice cream by promoting small ice crystals during the freezing process. Guar gum in the dressing of cot
Q. What do you mean by Transition Period? The transition period from the Renaissance to the Modern period produced many notable workers and much literature. Botanists gradually
Explain some Do's and Don'ts when working in Laboratory? 1) Always wear a lab coat when working a laboratory. 2) Ensure that no harm is caused to yourself or the people work
MA L THU S THEORY OF HUMAN POPULATION GROWTH - Malthus put forward in 1778. 1. Population grows in geometrical ratio, where as the means grow in arithmetical ratio.
Animal Fats This group consists of depot fats from domestic land animals (e.g., lard and tallow), all containing large amounts of C16 and C18 fatty acids, medium amounts of uns
Microbodies Peroxisomes and glyoxysomes are microbodies formed from ER which superficially resemble the lysosomes. Peroxisomes are spherical bodies limited by a single membrane
What is the primary structure of a protein? What is the significance of the primary structure? The primary protein structure is the linear sequence of amino acids that form the
Define the Psychological problems - Effect of Obesity? Obese people may be exposed to ridicule and discrimination in areas like employment, promotions and social interactions.
Hyperthyroidism (Graves Disease): Graves diseases is the most common cause of hyperthyroidism in children and is usually associated with an enlarged thyroid gland and exop
N a ture of viruses Viruses vary in their size ranging from 20 nm (200 Ao) to 350 nm (3,500 Ao) and in shapes from spherical to bullet, rod, brick or filamentous forms. Some
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!
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd