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. Define osseointegration and its theories?
Osseointegration implies that "it is a contact established without interposition of non bony tissue between normal remodeled bone and an implant at the light microscopic level, entailing a sustained transfer and distribution of load from the implant to and within the bone tissue". Osseointegration can also be defined as "a direct structural and functional connection between ordered, living bone and the surface of a load carrying implant" Creation and maintenance of osseointegration, therefore, depends on the understanding of the tissue's healing , repair, and remodeling capacities.
Branemark's Theory of Osseointegration
Branemark proposed that implants integrate such that the bone is laid very close to the implant without any intervening connective tissue. Branemark also stated that the implant should not be loaded and left out of function during the healing period for osseous integration to occurWeiss's Theory of Fibroosseous fixation Weiss' theory states that there is a fibro-osseous ligament formed between the implant and the bone and this ligament can be considered as equivalent to the periodontal ligament found in the gomphosis. He defends the presence of collagen fibers at the bone-implant interface. Biointegration - dePutter observed that there are two ways of implant anchorage or retention: mechanical and bioactive.
Mechanical retention refers to the metallic substrate systems such as titanium alloy. The retention is based on the undercut forms such as vents, slots, dimples, screws etc and involves direct contact between the dioxide layer on the base metal and bone with no chemical bonding. Bioactive retention is achieved with bioactive materials such as hydroxyapatite (HA), which bond directly to the bone, similar to ankylosis of natural teeth.
Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4
Explain about the Salting - Methods of Food Processing? Salting: Salting, especially of meat, is an ancient preservation technique. Food is treated with salt or a strong salt s
Accident Causation - Accidents and Losses Several accidents occurs everyday year round in industries. We have already discussed different types of accidents and injuries t
Preoperative antibiotics Preoperative antibiotics can decrease the incidence of infection after colorectal surgery; for elective operations, an oral regimen of neomycin (not a
Define about the Glutathione peroxidases - Selenium? The role of selenium in the cytosolic enzyme, glutathione peroxidase (GSHPx), was first illustrated in 1973. Four selenium
Q. What are the major treatments of diabetes mellitus? The general goal of the diabetes curing is to keep normal glycemic levels. Type I diabetes is treated with parenteral
Q. Principles of Numerical Taxonomy? Numerical taxonomy is based on the following 7 principles. 1) The greater the content of information in the taxa of a classification is an
Q. Introduction of Quality Attributes of Food? Seasonal fruits and vegetables are grown in plenty, and are available in their respective seasons in abundance. While choosing th
How Campylobacteriosis is caused It is caused by Campylobacter jejuni, a Gram-negative rod. It is a microaerophillic organism, which means it has a requirement for reduced lev
Explain congenital heart disease ? No systematic surveys have been conducted to estimate the incidence of CHD at birth in India and other developing countries. As a result ther
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