. Local and regional anesthesia; with chapters on spinal, epidural, paravertebral, and parasacral analgesia, and other applications of local and regional anesthesia to the surgery of the eye, ear, nose and throat, and to dental practice. 66.) These can be easily reachedby injections over the opening of the anterior and posterior palatinecanals, the anterior just behind the incisor teeth in the middle line THE HEAD, SCALP, CRANIUM, BRAIN, AND FACE ;69 (nasopalatine nerve) and the posterior just to the inner side of thelast molar tooth (anterior palatine), where the hard palate joins thealveolar
. Local and regional anesthesia; with chapters on spinal, epidural, paravertebral, and parasacral analgesia, and other applications of local and regional anesthesia to the surgery of the eye, ear, nose and throat, and to dental practice. 66.) These can be easily reachedby injections over the opening of the anterior and posterior palatinecanals, the anterior just behind the incisor teeth in the middle line THE HEAD, SCALP, CRANIUM, BRAIN, AND FACE ;69 (nasopalatine nerve) and the posterior just to the inner side of thelast molar tooth (anterior palatine), where the hard palate joins thealveolar process, in each case making the injections deep down inclose contact with the bone. In using this method to secure perfect anesthesia it will be neces-sary to block the anterior palatine nerves on both sides, as thebranches from each side cross over beyond the middle line. The tongue can be anesthetized by blocking the lingual nerve Glossopharyngeal n. Internal carotid artery and pneumogastric n. Cervical ganglion of supe-rior sympathetic trunk Internal jugular veinand glossopharyn-geal n. Parotid fossa — Posterior focal vein External carotid artery Parotid gland Facial nerve Inferior dental arteryand nene MandibleMasseter Atlas with prevertebralfascia Rectus capitis anticusmajor and longuscolli major Hypoglossal n. Tonsil Internal pterygoid maxillary artery and veinFig. 197.—Horizontal section through lower portion of oral cavity. Relationship oflower teeth to ascending ramus and mandibular foramen. The large arrow indicatesthe correct position of syringe and needle for mandibular injection. (Corning.) with a paraneural injection. This nerve lies quite superficial underthe mucous membrane, where it crosses from the ramus of the jawto the base of the tongue; if the tongue is drawn forward and to theopposite side this fold of mucous membrane is put upon the needle passed just under the surface of the anterior edge of this foldto a depth not to exce
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