CROWN AND BRIDGE

VENEER Provisional Restoration: Interim esthetics Decrease sensitivity Provide essential diagnostic information Color Shape Length Incisal edge configuration

VENEER Placement: Single unit/ freehand Multi-unit Etch incisal third Small area Wash, Dry Apply resin Entire prep Light cure Contour composite resin Large increments Correct contour No overhangs Gingival margin smooth Multi-unit Diagnostic mock-up Clear matrix Plastic stent Polyvinyl siloxane Spot etch Incisal third Self-etch primer Contraindication Fill stent Placement over preps Polymerization-10 sec pt Polymerization- 5 sec to 1min If sticky 5 sec more Finish and Polish Separating disc Adhesive Glaze- 30 sec

PROVISIONALS PREPARATIONS THAT INVOLVE THE REMOVAL OF CUSP TIPS OR EXTEND OVER A CUSP TIP ON THE FACIAL OR LINGUAL SURFACE THE RESTORATION NEEDS A EXTRACORONAL TEMPORARY. Inlay Onlay Short-Term Dentin Primer Reduce sensitivity Coat entire prep Glass Ionomer Pulpal floor Custom acrylic Resin temp Place in prep –patient bite down (intercuspation) Non retentive design Polycarboxylate cement Eugenol cement (tempbond) CAN/CAM – CEREC same day

CRITERIA Comfortable and esthetically acceptable Stable with mesial and distal contacts Occlusal alignment Easily removed without damage to prep Fits snug and accurately along prepared margins (>.5mm from finish line/margin) Original tooth contours Protect gingiva from irritation and food impaction

Preformed Aluminum Crowns Different sizes and anatomical features Lack esthetic value Without anatomy- resemble thimbles- parallel Contouring necessary to adapt to tooth Fill with acrylic or composite- custom fit Preformed Acrylic Crowns Different sizes, shape and shades More esthetically pleasing for anterior Shape and contour of tooth Tabs on incisal- ease of placement- remove prior to cementation Fill with acrylic then trimmed before cementation Custom Acrylic/ Resin Crowns Accurate anatomical features Proximal contacts Proper occlusion Food deflection Marginal contours Matrix Direct- alginate, block,wax or thermo plastic buttons Indirect- matrix on model, wax or vacuumed formed shell Self-cure Methyl Methacrylate R’Methacrylate (resin) Physical properties Esthetics color stability Strong odor High shrinkage (R’ less) High exothermic heat during curing (R’ slightly lower) Composite Excellent color stability Two pastes Trim with diamond bur Remove greasy inner coating Use folwable to add to margins or repair