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Osseointegration Vs. Biointegration
In 1985, 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. Bone matrix is deposited on the HA layer as a result of physicochemical interaction between the collagen of bone and the HA crystals of the implant.
Morphology: It deals with external forms, structure and the relative position of various organs of living beings. Morphology is a branch of bioscience which dealing with the study
A solid compound was found to contain 42.11% C, 51.46%O and 6.43% H by weight. The molecular weight of the compound was 341. What is the molecular formula of the compound?
Poriferans and cnidarians do not have excretory systems. Do platyhelminthes have an excretory system? Platyhelminthes have a primitive excretory system made of flame cells (als
what is the organ of respiration in snaks
What are the main structures of chloroplasts? Chloroplasts are included by two membrane layers, the outer and the inner membranes. Inside the organelle the formative unit is kn
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Biology once said why this statement is logical in terms of kin selection and use the coefficient of relatedness he'd be willing to lay down his life to save two brothers or eight
A meal consists of grilled trout, potatoes and mushrooms. Explain how each item is ultimately the product of photosynthesis. Trout eat aquatic insects, many of which eat micros
Explain the Executive Functions - Psychological tests Executive functions are those involved in the planning, organisation, regulation and monitoring of goal directed behaviour
Determine How to Calculate the Amount of Nitrogen? The amount of nitrogen can be calculated for this value using the equation: 1000 ml of 1N H 2 SO 4 = 1000 ml of 1N NH 3
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