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Lookup NU author(s): Dr John Meechan, Jan Ledvinka
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Aim This study compared the anaesthetic efficacy of infiltration and intraligamentary injections in the permanent mandibular central incisor. Methodology Twelve healthy volunteers received each of the following methods of anaesthesia for one of their mandibular central incisors over four visits, 1 Labial infiltration of 1.0 mL. 2 Lingual infiltration of 1.0 mL, 3 Labial infiltration of 0.5 mL plus lingual infiltration of 0.5 mL, 4 Intraligamentary injection of 0.18 mL. Two percent lidocaine with 1 :80 000 adrenaline and 30 gauge needles were used throughout. Electrical pulp testing was performed before injection and every 2 min up to 30 min after the injection. Injection discomfort was recorded on a 100-min visual analogue scale. Data were compared With ANOVA, Students t-test and chi(2) tests. Results Anaesthesia varied between techniques (F = 9.3, P < 0.001). The incidence of anaesthesia at any time was as follows: 50% success for labial infiltration; 50% success for lingual infiltration; 92% success for combined labial and lingual infiltration; 0% success for intraligamentary injections (χ(2) = 20; P < 0.001). The mean (+/-SD) VAS score for intraligamentary injection discomfort was 28 12 mm, for buccal infiltrations 17 +/- 8 min and for lingual infiltrations 16 +/- 16 mm, Intraligamentary injections were more uncomfortable than buccal (t = 3.7; P < 0.01) and lingual infiltrations (t = 2.67: P < 0.05). Conclusions The most reliable method of the techniques investigated for obtaining pulpal anaesthesia in mandibular permanent central incisors was a combination or labial and lingual infiltration. Intraligamentary injections were unreliable and were more uncomfortable than infiltrations in the mandibular central incisor region.
Author(s): Ledvinka JIM; Meechan JG
Publication type: Article
Publication status: Published
Journal: International Endodontic Journal
Year: 2002
Volume: 35
Issue: 7
Pages: 629-634
ISSN (print): 0143-2885
ISSN (electronic): 1365-2591
Publisher: Wiley-Blackwell Publishing Ltd.
URL: http://dx.doi.org/10.1046/j.1365-2591.2002.00532.x
DOI: 10.1046/j.1365-2591.2002.00532.x
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