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.
When that happens, your dentist will fit you with a temporary filling so that your teeth will not shift and your bite will not be affected while you wait for your permanent restoration. When your tooth is being prepped for a dental crown, a temporary filling is placed in the crown opening to keep saliva out.