Tuesday, June 27, 2017

Marginal deterioration of amalgam restoration should be due to.. No enough bulk of dentine



Marginal deterioration of amalgam restoration should be due to:  تخرب أملغم الحواف
a. No enough bulk of dentine.
b. Corrosion.
c. Over carving.
d. Improper manipulation of amalgam.
e. A and b.
f. C and d.
g. All the above.***
h. B, c and d.

Amalgams that are corroded or have inadequate bulk to distribute stresses may fracture. At margins, where amalgams are thinner, extrusion may have occurred, and corrosion may have compromised the integrity of the amalgam, fracture is even more likely.