Early dental film required long exposure times because
A. it was hand wrapped.
B. the emulsion was only on one side.
C. glass plates were used as the base.
D. the packets were not moisture resistant.
Answer:B
Early dental film required long exposure times because
A. it was hand wrapped. B. the emulsion was only on one side. C. glass plates were used as the base. D. the packets were not moisture resistant.
Explanation: A) Early film had emulsion on only one side and required long exposure times.