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.
Explain the Sub-Culturing? Microbiological studies require microorganisms in pure form, i.e., a single type of microorganisms should be present in a culture. Maintenance of the
Define the Fehling's Soxhlet method (Lane-Eynon method)? This is a titrimetric method that is commonly used in food laboratories to estimate percentage of reducing sugars and t
The potassium-sparing agents spironolactone, triamterene, and amiloride are often useful in combination with the loop diuretics and thiazides. Triamterene and amiloride act on the
Define about the Yeast - Saccharomyces? Classification Kingdom - Mycetae Division - Amastigomycota Class - Ascomycetes Order - Endomycetales Family - Saccharomyc
Pyruvate Dehydrogenase Complex The Pyruvate Dehydrogenase Complex (PDC) is one of the single central enzymes of aerobic metabolism. After completion of this animation you shoul
Conscious experience is probably the most familiar mental process that we know, yet its workings remain mysterious. Consciousness is not directly accessible for study. Hence the ne
Regarding the article "Baby Blues" which of the following is a false statement? A. Children, whose mothers underwent severe stressful episodes during pregnancy, have higher tha
Q. Explain False Positive Tests? As ST depression has been equated with CAD, patients with this finding who have less than a critical coronary narrowing has been called false p
The pumps The blood from the operating field is sucked with the help of the cardiotomy sucker and pump, which is filtered to remove all particulate matter and then pass
Q. What do you mean by Ulcerative Colitis? Let us understand clearly about ulcerative colitis by reading the following case. Varun, a 48-year-old male, had a very successful
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