Which statement is correct regarding prefabricated temporary crowns? Select one:
a. They can be used for posterior but not anterior preparations.
b. They are available in cast gold.
c. They are available in porcelain fused-to-
metal material.
d. Cellulose acetate is a thin clear shell available in all tooth types.

d. Cellulose acetate is a thin clear shell available in all tooth types.

Explanation:

Cellulose acetate is a thin clear shell available in all tooth types, so this is the correct option.

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- Heather

the ecg findings of an acute anterior myocardial infarction wall include: st segment elevation in the anterior leads (v3 and v4) at the j point and sometimes in the septal or lateral leads, depending on the extent of the mi. this st segment elevation is concave downward and frequently overwhelms the t wave.

explanation:

what are the choices?