. Regional anesthesia : its technic and clinical application . foramina ovale; so that ^ ~ ^^ °^ ^^< depth of the foramen ovale from the articular tubercle of the zygoma on the same side. obtains rapidly, and is the undeniable proof that the solution hasreached the gasserian ganglion. It is not a complication and has noclinical significance, provided the cornea is protected during the periodof anesthesia (page 63). The mandibular block is indicated chiefly in extensive operations onthe lower jaw and parotid region, and in the treatment of trifacialneuralgia. blocking of cranial nerves 99 In
. Regional anesthesia : its technic and clinical application . foramina ovale; so that ^ ~ ^^ °^ ^^< depth of the foramen ovale from the articular tubercle of the zygoma on the same side. obtains rapidly, and is the undeniable proof that the solution hasreached the gasserian ganglion. It is not a complication and has noclinical significance, provided the cornea is protected during the periodof anesthesia (page 63). The mandibular block is indicated chiefly in extensive operations onthe lower jaw and parotid region, and in the treatment of trifacialneuralgia. blocking of cranial nerves 99 Inferior Dental Block (Blocking of the Inferior Dental Nerve) On leaving the mandibular nerve, the inferior dental nerve liesposterior and lateral to the lingual nerve. It runs downward andforward to the inferior dental foramen, behind the Hngula (spine ofSpix), on the medial aspect of the ascending ramus of the mandible,enters the canal and continues its course within the bone until itreaches the mental foramen, where it emerges as the mental nerve, Oph+ha,. Lmgula fcpme de 3pix) Fig. 71.—Inferior dental block. Relation of the inferior dental nerve to the ascendingramus and Hngula. Inferior dental plexus. breaking up fanwise into its terminal branches. Before entering theinferior dental canal the inferior dental nerve sends off branches to themylohyoid muscle and to the anterior belly of the digastric muscle,and filaments to the oral mucosa and periosteum. During its coursethrough the inferior dental canal it gives off numerous branches whichinosculate to form the inferior dental plexus, supplying twigs to themolars and bicuspids. On reaching the mental foramen the inferiordental nerve gives off the incisor nerve, which continues its course withinthe mandible to the midline, supplying the canine and incisor teeth. lOO REGIONAL ANESTHESIA The mental nerve supplies the skin and integument and mucous mem-brane of the lower Up; it overlaps the midline just like all the othersjTnm
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