# The preferred gingival finish line for veneer metal restoration is:
a) Shoulder
b) Chamfer
c) Shoulder with bevel
d) Radial shoulder
The correct answer is B. Chamfer.
#Shoulder Finish Line
Indications: • All ceramic crowns • PFM crowns • Injectable porcelains
Advantages: • Good crown contours • Esthetics • Less distortion • Provides adequate bulk
Disadvantages: • Least conservative • Inferior marginal adaptation
# Shoulder with bevel Finish Line
Indications: • Proximal boxes of onlays and inlays • Labial finish line of metal ceramics • Occlusal shoulder of onlays
Advantages: • Superior marginal adaptation • Resists distortion • Facilitates removal of unsupported enamel rods
Disadvantages: • Requires subgingival extension • Detection of post cementation caries is difficult
# Chamfer Finish Line
Indications: • Cast metal restorations • Lingual aspect of metal ceramics
Advantages: • Conservative • Good marginal adaptation • Provides bulk
Disadvantages: • Improper fabrication may result in an unsupported tip
# Knife edge Finish Line
Indications: • Young patients • MOD onlay • Inaccessible areas • Finish lines in cementum
Advantages: • Conservative • Ideal for marginal adaptation
Disadvantages: • Does not provide a distinct finish line • Waxing, polishing and casting becomes critical • Overcontoured restoration in an attempt to obtain bulk
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