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.
1 Any decay is also removed. If additional tooth structure is needed to support the crown, the dentist may build up the core of the tooth. 2  An impression is made to provide an exact model for the crown.  You will get a temporary crown while you wait for the permanent crown to be readyâusually less than two weeks.