An optical illusion created by an increased radiolucency observed at the cervical area of the tooth is called mach banding. The mach banding effect increases when overlap error occurs. a. The first...

An optical illusion created by an increased radiolucency observed at the cervical area of the tooth is called mach banding. The mach banding effect increases when overlap error occurs.

a. The first statement is true. The second statement is false.

b. The first statement is false. The second statement is true.

c. Both statements are true.

d. Both statements are false.