The most suitable margin design for all ceramic restoration is:
A. Shoulder
B. Chamfer
C. Shoulder with bevel
D. Depends upon operators choice
A. Shoulder
B. Chamfer
C. Shoulder with bevel
D. Depends upon operators choice
Ans. (A) Shoulder: Finish Lines Indications
1. Shoulder All ceramics crowns, Porcelain
fused to metal crowns, Injectable porcelains.
2. Shoulder with bevel Proximal boxes of
onlays and inlays. Labial finish line of metal ceramics, Occlusal shoulder of
onlays.
3. Chamfer Cast metal restoration, Lingual
aspect of metal ceramics
4. Knife edge Young patients, MOD onlay,
Inaccessible areas, Finish lines in cementum.
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