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Reference: shillingburge et.al.fundamentals of fixed

prosthodontics, third editionChapter 11

Preparations for partial veneercrowns


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If it covers all of theclinical crown =>

full or complete veneercrown

Classified according tomaterial into:

1- full metal

2- ceramo-metal3- all ceramic


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If only portions ofthe clinical crown areveneered =>

partial veneer crown


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Partial veneer crowns More conservative restoration than full veneer crowns

An intact surface of the tooth is not included if its not

essential for retention, strength or esthetic Supragingival margin

Less retention than full coverage crowns

Grooves and other features are used to compensate for

the retention and resistance lost when an axial wall isnot covered


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Advantages Conservative

Accessibility of the margins

Less periodontal irritation Easier to seat

Allows usage of electric pulp tester


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Three quarter crown The buccal surface is not covered


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Reduction guidance


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Occlusal reduction Depth-orientation grooves: 1.0/1.5mm

Reduction depth decreases at the occlusobuccal line

angle to minimize display of metal


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Occlusal reduction


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Occlusal reductionWide bevel: 1.5mm

On the functional cusp


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Occlusal reduction Finishing the occlusal surface


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Lingual reduction Chamfer finish line


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Proximal reduction


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Proximal reduction


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Proximal reduction The finishing


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Proximal groove Bur :171


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Proximal groove


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Proximal flare For more accessibility for probe and tooth brush


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Occlusal groove (offset)

Occlusal groove with occlusal f lare


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other configurations


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Anterior three quarter crowns


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