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OVERVIEW OF A FIXED PROSTHODONTIC PROCEDURERetention aidsThese provide additional support for the crown if the tooth is extensively decayed or fractured or has been endodontically treated. •Core buildup•Pin retention – adds strength to the core,need to know where the pulp is•Post and core (only endo teeth)
Post and CorePin Retention7aaUeAw4THk
Gingival retraction and tissue management Gingival Retraction CordThe cord temporarily displaces the gingival tissue and widens the gingival sulcus so that impression material can flow around all parts of the preparation. It takes place after the preparation is done and just before the impression taken.Chemical retraction with the use of cord is the most common method.•Non-impregnated •Impregnated-vasocontrictor•Braided, twisted, untwisted•Sizes?v=OFbvwAzZuXY&feature=related
RETRACTION CORD PACKINGRetraction Cord is placed with the use of a blunt cord packing instrument that is broad and rounded.Helps to gently place the cord within the sulcusCan use other instruments (plastic instrument)Placing and Removing a Retraction Cord.mp4
Final impressionElastomeric impression materials are used to create an extremely accurate impression.