CENTRAL (run 10 May 2010)

1 ACETAMINOPHEN/ (1462)

2 paracetamol.mp. or acetaminophen (ti,ab,kw) [mp=title, original title, abstract, mesh headings, heading words, keyword] (2761)

3 INFUSIONS, INTRAVENOUS/ (7592)

4 (intravenous or intra‐venous).mp. or IV.in. [mp=title, original title, abstract, mesh headings, heading words, keyword] (37164)

5 1 or 2 (3017)

6 3 or 4 (37164)

7 5 and 6 (405)

8 propacetamol (ti,ab,kw) (118)

9 7 or 8 (479)

10 pain.mp. or exp Pain/ or exp Pain, Postoperative/ (50055)

11 pain$ (ti,ab) (41517)

12 postoperative pain (ti,ab) (5190)

13 postsurgical pain (ti,ab) (114)

14 analgesi$ (ti,ab) (18117)

15 10 or 11 or 12 or 13 or 14 (56219)

16 exp Surgery/ (187)

17 oral surgery.mp. or exp Surgery, Oral/ (660)

18 ORAL SURGICAL PROCEDURES.mp. [mp=title, original title, abstract, mesh headings, heading words, keyword] (327)

19 dental surgery.mp. [mp=title, original title, abstract, mesh headings, heading words, keyword] (196)

20 16 or 17 or 18 or 19 (1278)

21 15 or 20 (56993)

22 9 and 21 (366)