178H
Fig. 5.6 Pistol-grip intraligamentary
syringes.179H
Fig. 5.7 A pen-grip intraligamentary
syringe. This is a less-aggressive looking
instrument than the pistol-grip type and is
preferred in children.5.6 PAIN-FREE LOCAL ANAESTHESIA
5.6.0 Introduction
The administration of pain-free local anaesthesia depends upon a number of factors
which are within the control of the operator. These factors relate to: (1) equipment;
(2) materials; (3) techniques.
5.6.1 Equipment
All components of the local anaesthetic delivery system can contribute to the
discomfort of the injection. Needles should be sharp and the finest available gauge
should be used. The narrowest needle used in dentistry is 30 gauge. A narrow gauge