Section 20

insert in the appropriate register any alteration which may come to his knowledge in the name or address of any registered dentist;

correct any error in any entry in the appropriate register;

remove from the appropriate register the name of any person —

whose name is ordered to be removed under any provision of this Act; or

who is deceased;

insert in the appropriate register any alteration in the qualifications or additional qualifications of a registered dentist; and

remove from the appropriate register the name of any person who has requested and shown sufficient reason for his name to be removed from that register, unless a complaint has been made, or an inquiry has, or investigations or proceedings have, commenced under Part V against that person.