Before revision: Gow-Gates technique, explained This is used for more extensive anesthesia or when there is failure of the IANB Vazirani-Akinosi technique - Invented by Sunder J. Vazirani in 1960 and later reintroduced in 1977 by Oyekunle J. Akinosi, a closed-mouth injection technique, the syringe is "advanced parallel to the maxillary occlusal plane at the level of the maxillary mucogingival junction."
After revision: This is used for more extensive anesthesia or when there is failure of the IANB Vazirani-Akinosi technique - Invented by Sunder J. Vazirani in 1960 and later reintroduced in 1977 by Oyekunle J. Akinosi, a closed-mouth injection technique, the syringe is "advanced parallel to the maxillary occlusal plane at the level of the maxillary mucogingival junction."