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Define Mechanism of Rotary Instrument Fracture - Cyclic Fatigue
Occurs unexpectedly and without any visible signs of plastic deformation o An instrument rotating freely in a curved canal is subjected to compression and elongation (tension) simultaneously, resulting in work hardening and metal fatigue lead to fracture
NOTE: During manufacture the machine of grinding can cause minute crack that is not visible to the eye... but I can see it under the microscope. This crack when insert it into curved canal but not tight canal .. with rotation movement there is repeated compression and tension eventually well lead to fracture of the file .. even if the file is new ( 1st use)
What are the types of colloidal dispersions Depending upon the relative affinity of the dispersed phase for the dispersion medium, colloidal dispersions are, further divided in
Two-Kingdom Classification The history of taxonomy is as old as man himself. It may be traced back to prehistoric times because man had learnt to designate living organisms by
Q. Why is the nickname "dark reactions" not completely correct for the chemical stage of photosynthesis? "Dark reactions" is not a correct name for the chemical phase of photos
Q. What do you mean by hemodialysis? Hemodialysis is the artificial blood filtration made by specific machines in alternative of the kidneys. Hemodialysis may be necessary in p
Ecosystems are so varied in form and structure that whatever has a distinct community of its own, can be called an ecosystem eg. A crop field, grass land, barks etc. all the ecosys
The oxidation of sugar in the cell of higher organisms takes place in the where
(a) What are the intermediate products of anaerobic respiration in an active muscle? (b) Which of them is associated with oxygen debt? (c) In what way is th
Phototherapy As you know exposure of the jaundiced infant to blue, white or green light is effective in reducing the serum billirubin level. When bilirubin absorbs light, ser
Calculate the diffusion coefficient of a protein bovine serum albumin at 23 degree Celsius?
Based on the information given in each description, determine if the transporter is likely a channel or a carrier. This transporter shows increasing rate of transport with increasi
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