. Regional anesthesia : its technic and clinical application . Pala-tmeNn-Sphenopala-tlYve ^-ta.\N/ Sup. middle den-tal lSt~. den-talNni InfraorbrtalNs Fig. 51.—Superior posterior dental block. Formation of superior dental Fig. 52.—Superior posterior dental block Procedure similar to the macillary 82 REGIONAL ANESTHESIA following the lateral route, introducing the needle on the lower border ofthe malar portion of the zygomatic arch and directing it transverselyto meet the surface of the maxilla (Fig. 53). No paresthesias arenecessary; but the fluid mu

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. Regional anesthesia : its technic and clinical application . Pala-tmeNn-Sphenopala-tlYve ^-ta.\N/ Sup. middle den-tal lSt~. den-talNni InfraorbrtalNs Fig. 51.—Superior posterior dental block. Formation of superior dental Fig. 52.—Superior posterior dental block Procedure similar to the macillary 82 REGIONAL ANESTHESIA following the lateral route, introducing the needle on the lower border ofthe malar portion of the zygomatic arch and directing it transverselyto meet the surface of the maxilla (Fig. 53). No paresthesias arenecessary; but the fluid must be injected close to the bone. Theaverage depth to which the needle is introduced is from 2 to 3 the oral route, and from 3 to 4 cm. by the lateral or zygomaticroute. In dentistry preference is given to the oral route.

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