. 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. bout 15 mm. During the injection it is best, as has been correctly emphasizedby Williger, to rest the syringe barrel on the bicuspids or betweenthe canine and first bicuspids of the opposite side, thus securing acertain support for the syringe and an indication for the correct levelfor the insertion of the needle. (See illustrations.) Management of the Needle.
. 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. bout 15 mm. During the injection it is best, as has been correctly emphasizedby Williger, to rest the syringe barrel on the bicuspids or betweenthe canine and first bicuspids of the opposite side, thus securing acertain support for the syringe and an indication for the correct levelfor the insertion of the needle. (See illustrations.) Management of the Needle.—After insertion the needle is ad-vanced to the bone w^ithout entering the peritoneum (Figs. 192, 193).A certain touch is soon acquired as to whether the needle is being ad-vanced in the correct direction, not too far pharyngeally, yet closelyenough to the bone. If, in case of a very sharp angle of the bone,the periosteum is found to offer resistance, even though moderately, 566 LOCAL ANESTHESIA the needle should not be advanced any farther, and under no condi-tion use force, else the needle bores into the periosteum of the boneand is sure to break. It is best to carefully withdraw the needle for Frenum labiisuperioris^ Gingiva. -Upper lip Upper dental arHard palate Soft palateUvula A nterior pillarPosterior pillar Tonsil fKjff Point of insertion of H> needle in retromolar if IsthmusTongue Cut portion of cheekLower dental arch Frenum labii inferiorisLower lip Points for injection itt mental fossa Fig. 194.—Oral cavity, widely opened. The solid black line indicates the correctposition of the syringe for mandibular anesthesia. The arrows at the anterior portion ofthe mandible indicate the points of insertion of the needle in the reflection of mucousmembrane for injection in canine fossa. (After Spalteholz.) a short distance, and, after slightly altering its direction pharyngeally,to advance again posteriorly. The bone should not be reached before the needle has gone fora c
Size: 1279px × 1955px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookidlocalregiona, bookyear1920
