Define osseointegration and its theories, Biology

Assignment Help:

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 occur
Weiss'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.


Related Discussions:- Define osseointegration and its theories

Concepts of migration - emigration and immigration, Q. How different are th...

Q. How different are the concepts of migration, emigration and immigration? The Migration is the moving of individuals of a species from one place to another. The Emigration is

Acute phase reactants, ESR and CRP are elevated in almost all patients of a...

ESR and CRP are elevated in almost all patients of arthritis and carditis and rarely in patients with chorea. ESR should be repeated periodically as it is useful in following the c

Explain adverse effects of efavirenz, Adverse effects of Efavirenz The ...

Adverse effects of Efavirenz The most common adverse effects have been rash, dizziness, headache, insomnia and inability to concentrate. Vivid dreams, nightmares and hallucinat

Riccia, What isthe Riccia

What isthe Riccia

What amount of catalyst is obsessive in the reaction, Q. What amount of cat...

Q. What amount of catalyst is obsessive in the reaction it catalyzes? Catalysts are not obsessive in the reactions they catalyze.

Explain in brief about leukotrienes and prostaglandins, Leukotrienes and pr...

Leukotrienes and prostaglandins are produced only when the mast cell undergo degranulation and enzymatic break down of phospholipids in the plasma membrane. The effects formed b

How is the concentration of drugs in human plasma defined, Some drugs bind ...

Some drugs bind extensively to plasma proteins (Warfarin binds 99%) while others have virtually no binding. Extraction depends on the type of drug - there are dissimilar standar

Adrenal medulla, ADRENA L MEDULLA The adrenal medulla develops from th...

ADRENA L MEDULLA The adrenal medulla develops from the neuroectoderm of the embryo. Medulla consists of chromaffin cells or phaeochromocytes. These cells are connected wi

Density dependent factors - population regulation, Density Dependent Factor...

Density Dependent Factors - Population Regulation The density dependent factors are intrinsic or biotic factors and they depend on interactions between individuals within same

Bacteria classified according to their need for oxygen, How are bacteria cl...

How are bacteria classified according to their need for oxygen? According to their necessity of oxygen bacteria are classified into:- a) Anaerobic (those that survive withou

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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