(1) Subject to the provisions of this regulation, a dental therapist shall be permitted to carry out dental work (amounting to the practice of dentistry) of the following kinds:
(a) extracting deciduous teeth;
(b) undertaking simple dental fillings;
(c) cleaning and polishing teeth;
(d) scaling teeth (that is to say, the removal of deposits, accretions and stains from those parts of the surfaces of the teeth which are exposed or which are directly beneath the free margins of the gums, including the application of medicaments appropriate thereto);
(e) application to the teeth of such prophylactic materials as the Council may from time to time determine;
(f) giving advice within the meaning of section 37(1) of the Act, such as may be necessary to the proper performance of the dental work referred to in this regulation;
but shall not be permitted to carry out dental work amounting to the practice of dentistry of any other kind except that ( a ), ( b ) ( d ) and ( e ) above may be carried out by a dental therapist under local infiltration analgesia administered by the dental therapist or under any local or regional block analgesia administered by a registered dentist.
(2) A dental therapist shall not be permitted to carry out such dental work authorised as aforesaid except
(a) in the course of providing national health services;
(b) under the direction of a registered dentist; and
(c) after the registered dentist has examined the patient and has indicated in writing to the dental therapist the specific treatment to be provided for the patient by the said therapist.