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crown and bridge remover - nashtaylor temporary crown remover-morell remover -position the curved tip below the height of contour or at the margin of
percussive instruments -this method used a selected and controlled percussive removal force-instruments delivers an impact either directly to a
active instruments- do groove occlusally or buccally until reach tooth structure- apply this instrument then screw to break the bond between tooth
percussive instruments-crown and bridge remover corona flexi nitch-its tip look like the curette and has hock-4 or 5 tips according to tooth position
grasping instruments -plier or clamp forceps -put piece of rubber in the
sticky sweet methodrichwil crown and bridge remover-it is a resin block of water-soluble like a stick sweet -it is first softened in hot water
remove the crown for reuse - if the decision is made to remove the crown for reuse - the visibility is increased - allowing for much easier removal
coronal disassembly- if the existing restoration with marginal defect -the crown was sectioned through the bucco-occlusaly christensen crown remover
access burs through the crown carbide fissure burs cut through metal amalgam alloy or cast metal or composite resin porcelain
access through the crownadvantages -allow for better isolation with the rubber dam -better esthetic anf functioning-good coronal seal between visits
coronal disassembly-if the existing restoration functionally designed well fitting and esthetically pleasing -the access the pulp chamber during
nonsurgical retreatment secondary endodontic ttt -is the main difference between primary endodontic disease versus post treatment disease is the need
extraction of the tooth -in nonstrategic importance-diseased maxillary second molars with no opposing tooth or with an opposing tooth in class l or
if the condition or the post disease as a result of intraradicular infection----gt treated conventionally via apex non-surgical ----gthere we have 2
nonsurgical retreatment will be the preferred choice -less invasive not cause problem to the pt-less traumatic postoperative most probably no post
once the decision has been made to retain the tooth there are two ways for tttbull non surgical retreatment
etiology-although this approach less desirable it is useful short-term option if the etiology of the condition remains unknown- the patient must
tooth associated with persistent apical periodontitisfunctional retention of the tooth persistent lesion while remain asymptomatic function for an
extraradicular infectionswhatever the cause of post endodontic disease we should do proper diagnosis to determine what is the cause is it intra or
pocket psedocyst lesions present as endodontic origins from canals it makes lumens resemble granuloma all lesions lined until root canal or apical
true cyst cyst that is completely lined by epithelial tissuesall the lesions are far away without communication with endodontic access or endodontic
what is the difference between extra and intraradicularextraradicular means there is lesions came from periodontal or from the adjacent tissue and
what is the reason of post endodontic disease either there is persistent or reintroduce intracanal microorganisms that means if i do improper
what are the causes of endodontic painlesions in retreatment cases called post endodontic diseasesreasons of endo retreatment reasons of failure-