(4)The Central Government may, after considering the scheme and the recommendations of the Council under sub-section (3) and after obtaining where necessary, such other particulars as may be considered necessary by it from the person, authority or institution concerned, and having regard to the factors referred to in sub-section (7), either approve (with such conditions, if any, as it may consider necessary) or disapprove the scheme and any such approval shall be a permission under sub-section (1):Provided that no scheme shall be disapproved by the Central Government except after giving the person, authority or institution concerned granting recognised dental qualification a reasonable opportunity of being heard:Provided further that nothing in this sub-section shall prevent any person, authority or institution whose scheme has not been approved to submit a fresh scheme and the provisions of this section shall apply to such scheme, as if such scheme has been submitted for the first time under sub-section (2).