. 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. rther posteriorly while shghtly lowering the needle; in old persons,slightly raising the long needle (Fig. 187). ^Difficulties.—The technic of this form of injection offers somedifficulties, which, after some practice are easily overcome; aboveall, it must be observed that the insertion of the neetUe is made not THE HEAD, SCALP, CRANIUM, BRAIX, AND FACE 565 di
. 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. rther posteriorly while shghtly lowering the needle; in old persons,slightly raising the long needle (Fig. 187). ^Difficulties.—The technic of this form of injection offers somedifficulties, which, after some practice are easily overcome; aboveall, it must be observed that the insertion of the neetUe is made not THE HEAD, SCALP, CRANIUM, BRAIX, AND FACE 565 directly at the edge of the bone in the internal oblique line, but some-what hngually from the bone. Behind this internal ridge the bonysubstance bulges still farther Hngually, running over into the lingulaafter having first formed a second convex excrescence (Figs. 189, 192, 193)- After the correct point of insertion, about i cm. above the level of the masticating surface of the last molar, has been found the ob-lique foramen is reached, just above the hngula, with the needle(Figs. 189, 192, 193). Inferior dental nerve ?Inferior dental arterySection through ascend-ing ramusLingual nerver- ^ -Rctromolar triangle Mylohyoid ridge. ^Mucous coveringJnternal oblique line External oblique line ?t/^^r-^^^ x_-P 0/ contact of syringe*^ ^ ^ uith third molar — Third molar — w ^Correct direction~ -~ of needle Direction of dental arch Fig. 193.—Horizontal section through ascending ramus. Diagram showing positionof syringe and needle: /, Eminence of internal oblique line; e, eminence of externaloblique line. (After Fischer.) The distance from the anterior margin of the internal obliqueline to the posterior margin of the lingual is about 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 indicat
Size: 918px × 2723px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookidlocalregiona, bookyear1920
