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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)
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Which of Mendel's postulates can only be demonstrated in crosses involving at least two pairs of traits? a) Segregation b) dominance/recessiveness c) independent assortment d) unit
What is the mRNA sequence to this DNA sequence : Guanine, cytosine, adenine, adenine, thymine, guanine
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Define precaution for estimation of vitamin c in lemon juice? 1. Rinse all glassware with 3% metaphosphoric acid before you begin your practical and subsequently each time you
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Q. How are the male gametes and the male gametophytes formed in angiosperms? In the anthers of every stamen there are pollen sacs. Inside the pollen sacs there are microspore m
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