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Crown & Bridge
Slide Review Atlas for Fixed Prosthodontics
For Third Year students
By :- Assist. Lect. Sinan A. Shwailiya
Retainer pontic connector Components of bridge
Indications for crown 1-Tooth with large defect filling
2- Discolored or fractured tooth
3- tooth with large carious lesion
4- as a retainer for bridge
Types of crowns
1-Full metal crown
2- metal with facing (metal ceramic crown) Porcelain fused to metal crown
Labial shoulder
and lingual chamfer
3- Jacket crown (shoulder labial and lingual)
4- Partial coverage three quarter crown
5- Post crown
Peeso Reamer bur for praparation of post space
Plastic post
Preparation for post crown
Preparation for full metal crown chamfer margin all around the tooth
Metal with facing (porcelain fused to metal crown) the margin is chamfer lingually and shoulder buccally
Preparation of Jacket crown (The margin is shoulder all around the tooth)
Margin designs: A, Featheredge. B, Chisel. C, Chamfer. D, Bevel. E,
Shoulder. F, Sloped shoulder. G, Beveled shoulder
(Indication of each type is required mentioned in Lec3)
Round ended Flat ended Pointed Diamond disk Diamond tapered fissure bur or wheel shaped bur
Burs for crown preparation
Gingival Retraction cord
for control of bleeding and moisture
Impression techniques:
1-Single stage (Double mix)
light body silicone
Impression syringe
Single stage light body + Heavy body poly silicone impression material
Two stages Impression (Putty wash technique) 1-1st impression with heavy body 2- the area of prepared tooth is cut from the impression 3- light body is painted and other impression is taken
Temporary crowns
Poly carbonate ready made crown
acrylic custom made crown
Preformed (ready made) metal temporary crowns for posterior teeth: a- Anatomic b- nonanatomic
2 units post crown : post, core, outer crown
Indirect custom made temporary bridge celluloid acetate template
self cure acrylic is used for it
Acrylic direct ( chairside) Temporary bridge
It is made by the use of poly silicone imp. Mat.
Celluloid Acetate template for construction of temporary bridge
Vacuum device used for construction of the template
Working cast and Removable Die
Dowel pin used for removable die
Removable die
Solid cast and individual die
Alternative Die system (Di-Lok) System
Procedure for making Die by the dentist
Solid cast and Individual Die
Construction of Wax Pattern
Waxing instruments for construction of wax pattern
Metal cast bridge 1- prepared teeth
2- Wax pattern
3- Finished prosthesis
Components of the Casting Ring ( )
Crucible former Sprue
Wax Pattern (attached to sprue to be mounted in the casting ring)
Casting Ring
Ring Liner
Vacuum Investing machine
Investing technique
Wax burnout furnace
Centrifugal Casting machine
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