The effect of needle-free tooth anaesthesia on dental anxiety in adults receiving planned bilateral extractions

Six out of eight patients had a successful pain-free extraction when local anaesthetic was delivered by the test device. In two cases, further local anaesthetic was required using a conventional technique. Healing was uneventful and bleeding/laceration were minimal or negligible, irrespective of the anaesthetic technique used. Generally, the needle-free technique was preferred by participants in this study, with some making mention of the noise when the device is activated as an uncomfortable part of the procedure. The amount of local anaesthetic delivered by each technique was similar.