• K J Leong, G J Roberts, and P F Ashley.
• MClinDent (Paediatric Dentistry) Graduate, Unit of Paediatric Dentistry, Eastman Dental Institute and Hospital, University College London, University of London, 256 Gray's Inn Road, London, WC1X 8LD. kjleong18@hotmail.com
• Br Dent J. 2007 Sep 22; 203 (6): E11; discussion 334-5.

ObjectiveTo investigate if postoperative pain/discomfort and anxiety experienced by young children who had extractions under general anaesthesia (GA) were affected by perioperative injection techniques of local anaesthetic (LA).DesignA single-centre, double-blind, randomised controlled trial.SettingConducted in 2002/2003 at the Unit of Paediatric Dentistry, Eastman Dental Hospital, London.MethodsChildren, aged 2-6 years scheduled for extractions under GA, were randomly assigned to receive either no LA (NLA), infiltration injection (IFL) or intraligamental injection (ITR) perioperatively. All children received analgesic suppositories after induction.Outcome MeasuresAnxiety was scored using the Venham Picture Scale. Postoperative pain was scored using the Simplified Toddler-Preschooler Postoperative Pain Scale and supplemented with the Modified Pain/Discomfort Scale.ResultsEighteen children received NLA, 17 received IFL and 19 received ITR. Postoperative pain/discomfort and anxiety scores were not significantly different during the period of recovery. On the first night, the intraligamental group had significantly lower pain scores (p = 0.012).ConclusionPostoperative pain/discomfort and anxiety during the period of recovery experienced by young children who had extractions under GA appear not to be affected by perioperative injection techniques of LA. Upon discharge, intraligamental injection appears beneficial, as it is probably well tolerated by causing less soft tissue numbness initially and thus, reduces perceived pain/discomfort.

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