3 Amendment of regulation 23
1 Regulation 23 (dental hygienists) shall be amended as follows.
2 In paragraph (1)—
(a) after sub-paragraph (c) insert—

“(d) the removal of excess cement by instruments which may include rotary instruments;
(e) the taking of impressions.”

; and
(b) omit the words from “but shall not” to the end of the paragraph.
3 In paragraph (3)—
(a) for “local infiltration analgesia” substitute “local infiltration anaesthesia or inferior dental nerve block anaesthesia”; and
(b) omit “authorised as aforesaid”.
Paragraph (3) was amended by S.I.1991/1706, regulation 2(3)(c).
4 In paragraph (4)—
(a) after “tooth” insert “or replace a crown with a temporary cement ”; and
(b) after “fallen out” insert “or a crown been dislodged”.
Paragraph (4) of regulation 23 was added by S.I.1999/3460, regulation 6.
5 After paragraph (4) add—

“5 A dental hygienist may carry out any of the dental work described in paragraph (1) or (4) under local infiltration anaesthesia or inferior dental nerve block anaesthesia administered by the dental hygienist or any local or regional block anaesthesia administered by a registered dentist.
6 A dental hygienist shall administer inferior dental nerve block anaesthesia only under the direct personal supervision of a registered dentist who is on the premises at which the hygienist is carrying out such work at the time at which it is being carried out.
7 A dental hygienist may carry out any of the dental work described in paragraph (1) or (4) on patients under conscious sedation, provided that a registered dentist is in the room in which the work is being carried out for the duration of the work.”

.