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explain management of ledge - non-surgical endodontic retreatment place a bend of approximately 45 degree in the apical 1-2 mm of a 15 to 25 file by
explain ledge bypass - non-surgical endodontic retreatment ledge bypass - stst not nit cause it has shape memory ledges from outside the
explain the management of apical canal impediment well angulated radiograph coronal pre-flaring pulp champer flooded with sodium hypochlorite
nucleotidescompounds consisting of a nitrogenous base a pentose sugar and a phosphate
nucleosidescompounds formed from a nitrogenousbase and a penstose
management of canal impedimenta impediments are iatrogenic mishaps resulting from vigorous instrument short of theb appropriate working length and
define management of canal blockage canal calcificationdiamond coated instrument rt1 designed for better visibility and cutting efficiencya very
explain canal obstruction - non-surgical endodontic retreatment file work shorter than the normal apical and feel a great resistance
define the techniques of instrument retrieval endo extractor brasseler a hollow tube bonded to coronal tip of separated instrument by cyanoacrylate
explain wire loop and tube method1 use a 25-gauge dental injection needle cut to remove beveled end2 both ends of-mm diameter steel ligature wire
explain techniques for broken instrument removal described by gary carrstaging platform cutting in flat surfacea create straight line access to
define meitrac system instrument removal systema trephining bur to remove dentine and uncover the coronal end of the fileb extractor of appropriate
explain microtube and hedstorm file removal technique a hedstorm file was then passed down the length of the tube until it engaged itself tightly
explain the torsional failure - root canal testa occurs when the tip of the rotating instrument blinds locked in the canal while the motor continues
define mechanism of rotary instrument fracture - cyclic fatigueoccurs unexpectedly and without any visible signs of plastic deformation o an
define broken instrument removal procedures file or reamer gates-glidden peso drills lentulo spiral paste fillers thermomechanical gutta-percha
explain the canal obstructionfile work shorter than the normal apical and feel a great resistance to reach true lengtha a retained instrument o canal
explain micropener - non-surgical endodontic retreatment they are iso-colour coded flexible stst hand instruments it has
define techniques for detection hidden root canals three well-angulated periapical films for 3d morphology o with the cone directed straight on o
explain non-surgical endodontic retreatment - missed canal missed root canal as it hold pulp tissues and bacteria is major cause of endodontic
define the causes of failures of root canal treatment1 errors in diagnosis and treatment planning2 coronal leakage inadequate restorative
chemical properties of fatty acidsesterificationlike any other organic acid fatty acids also form esters with various alcohols an alcohol
method for radiographic evaluation of the outcome or rctoslashrstavik and associates suggest the use of the periapical index pai for radiographic
explain eicosanoidseicosanoids are the local hormones formed by body tissues during self-healing responses to stimuli
define the clinical success for the root canal treatmenta absence of pain and swellingb disappearance of sinus tractc no evidence of soft tissue