A practical treatise on fractures and dislocations of the jaws : for students and practitioners / by Chalmers J. Lyons.

  • Lyons, Chalmers J.
Date:
1919
Catalogue details

Licence: Public Domain Mark

Credit: A practical treatise on fractures and dislocations of the jaws : for students and practitioners / by Chalmers J. Lyons. Source: Wellcome Collection.

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    along the line of the inferior alveolar nerve, and when it is advisable to anesthetize the lingual nerve the needle should be advanced one cm. further, which brings the point of the needle near to the place where the lingual nerve separates from the inferior alveolar nerve. One cc. of the anesthetic solution should be deposited here. The anastomosis at the symphysis may be taken care of by blocking off the inferior alveolar nerve at the mental foramen of the opposite side. This may be accomplished either intraorally or extraorally. The technic of the extraoral method is as follows: The needle should be in- serted one cm. below and three mm. anterior to the apex of the second bicuspid tooth. It should be advanced directly to the mental foramen, where one cc. of the anesthetic solution is deposited. The area an- esthetized will be allof the lower jaw from the pterygomandibular space to the mental foramen. When it is desirable to anesthetize the anterior portion of the upper jaw, it can be done by blocking off the infraorbital nerve on one or both sides. The technic of this operation is as follows: By palpating about one cm. below the infraorbital margin on the anterior or facial surface of the superior maxilla, the infraorbital foramen may be felt. (Fig. 111.) After injecting five min. of the anesthetic solution around the foramen with a fine needle, we insert the point of the needle into the foramen and advanced it to the distance of one and one-half cm. (Fig. 112.) The needle should be directed slightly toward the median line. One cc. of the anesthetic solution is deposited in the infraorbita] canal. Complete anesthesia may be obtained of the anterior portion of the maxilla by blocking off the nasopalatine nerve at the incisal fora- men, one cm. posterior to the central incisor teeth.
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