I think many people in the thread misunderstood your approach. Some schools (although I only know of one) have a one time grade forgiveness and I think may clear the records...although to be honest I'm not sure about the accuracy of that statement.
I', pretty sure 99.99999999% of schools will never remove the grade from your transcript/clear it. They may "replace the grade" in order to raise GPA for "graduation/institutional purposes", but for AADSAS, they WILL count both grades because it is on your transcript. Therefore, you will end reporting both and there will be NO grade forgiveness for applying to Dental School. You also can't "hide" the grade. Report all of it, retake the class, get a solid A, and you are good to go.