. A manual on extracting teeth, founded on the anatomy of the parts involved in the operation; the kinds and proper construction of the instruments to be used; the accidents liable to occur from the operation, and the proper remedies to retrieve such accidents . e jaw,and are transmitted through the body of the bonebelow the alveolar cells (each of which, like those inthe upper jaw, is perforated by a minute foramenfor the transmission of a branch of each to its con-tained root of a tooth, and for the egress of therecurrent vein) to the mental foramen, where theypass out to be distributed on t
. A manual on extracting teeth, founded on the anatomy of the parts involved in the operation; the kinds and proper construction of the instruments to be used; the accidents liable to occur from the operation, and the proper remedies to retrieve such accidents . e jaw,and are transmitted through the body of the bonebelow the alveolar cells (each of which, like those inthe upper jaw, is perforated by a minute foramenfor the transmission of a branch of each to its con-tained root of a tooth, and for the egress of therecurrent vein) to the mental foramen, where theypass out to be distributed on the chin. The posteriorjunction of the ramus with the body of the boneforms a rough tuberosity called the angle of thejaw. Sec. 2. The muscles that are chiefly concerned inthe extraction of the teeth, and more particularly inthe accidents that may sometimes occur in connec- ANATOMY OF THE JAWS AND TEETH. 27 tion with that operation, and therefore require ourpresent attention, are the temporal, the masseter,and the external and internal pterygoid are the elevators of the lower jaw, and alsogive it its forward and backward, and its lateralmotions. The upper jaw has no independent motion. Itonly moves with the motions of the whole head. Fig. Fig. 6. (j Zyj^omaticus minor; h Zygomaticus major; t Massetermuscle; r Deep-seated portion of masseter. The masseter is a short, thick, quadrilateral shapedmuscle. It arises from the tuberosity of the superior 28 ANATOMY OF THE JAWS AND TEETH. maxillary bone, the lower margin of the malar bone,and from the zygoma, and is inserted into the ramusand angle of the lower jaw. The temporal is a broad, radiating muscle, occupy-ing a large part of the side of the head. It arises Fia. 7.
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Keywords: ., boo, bookcentury1800, bookdecade1860, bookidmanualonextract00robe
