Marginal deterioration of Ag restoration may be due to:
a. No enough bulk.
b. No dentin (undermined enamel).
c. Corrosion over carving.
d. Improper manipulation of Ag.
e. B, c, d.
f. All of above. ***
These objectives help to conserve the dentinal support and strength of the tooth, and they aid in establishing an enamel cavosurface angle as close as possible to 90 degrees . They also help to minimize marginal deterioration of the restoration by locating the margins away from enamel eminencies where occlusal forces may be concentrated.
a. No enough bulk.
b. No dentin (undermined enamel).
c. Corrosion over carving.
d. Improper manipulation of Ag.
e. B, c, d.
f. All of above. ***
These objectives help to conserve the dentinal support and strength of the tooth, and they aid in establishing an enamel cavosurface angle as close as possible to 90 degrees . They also help to minimize marginal deterioration of the restoration by locating the margins away from enamel eminencies where occlusal forces may be concentrated.
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