The maximum class size for those students whose special education needs consist primarily of the need for specialized instruction which can best be accomplished in a self-contained setting cannot exceed 15 students (15:1), or 12 students in a State-operated or State-supported school (12:1), except that:
The permanent crown will fit, look, and feel better than the temporary after all the proper and necessary adjustments has been made. Most dentists will check your bite when the temporary is out and again when the permanent crown is in place (not cemented yet). The two should feel the same.
It is not normal for that tooth that had a filling to hurt this much. Something is wrong with the filling. You do not seem to trust your dentist and from what you have stated, flossing is not going to make this pain go away. Also I do not understand why she would suggest a crown.