Page 291 - My FlipBook

LOCAL AND REGIONAL ANESTHESIA 287

The Suh-periosteal Injection in intra-alveolar anesthesia is of the
greatest use in operating upon vital dentine and pulp extirpation.
The needle should be short and stocky, twenty or twenty-two gauge.
It is inserted beneath the periosteum and even into the alveolar
process itself, as near as possible to the apical foramen of the
tooth to be operated upon. Considerable force is used in both of

Fig. 156.—Second position for giving the mental injection, showing the finger compressing
the tissues over the needle inside of the mouth to facilitate injecting the canal.
the intra-alveolar injections in counter distinction of all of the
other methods of local anesthesia.
Regional Anesthesia Conductive Anesthesia is strictly a nerve
blocking process Avhereby a region of the desired extent is anes-
thetized. The method is not new, having been practiced more or
less since the latter eighties, but has received a great impetus, due