The Dental cosmos . te bone; E, body of sphenoid bone; F, ptery-goid process of sphenoid ; G, great wing of sphenoid ; H, location of glenoid fossa; J, spheno-maxillary fissure ; K, malar process of superior maxillary ; M, foramen magnum ; N, nasal sep-tum (vomer). In making the accompanying drawing (Fig. 4) [making drawing incharcoal] I desire to assist in establishing a system of thought by whicha clearer comprehension can be had of the time and order of the erup-tion of the teeth, the progressive stages of development of the maxil-lary bones after birth, and to assist in illustrating the ca
The Dental cosmos . te bone; E, body of sphenoid bone; F, ptery-goid process of sphenoid ; G, great wing of sphenoid ; H, location of glenoid fossa; J, spheno-maxillary fissure ; K, malar process of superior maxillary ; M, foramen magnum ; N, nasal sep-tum (vomer). In making the accompanying drawing (Fig. 4) [making drawing incharcoal] I desire to assist in establishing a system of thought by whicha clearer comprehension can be had of the time and order of the erup-tion of the teeth, the progressive stages of development of the maxil-lary bones after birth, and to assist in illustrating the cause of thechange from the normal to the abnormal arch. The normal shape ofthe arch of a child with temporary teeth in place is first outlined, andthe time and order of development of the temporary teeth are thennoted. The first permanent molars are then added to the drawing intheir respective positions, and the lines representing the anteriorborder of the malar process of the superior maxilla are extended at Fig. 2Q2 THE DENTAL COSMOS. the same angle. The lines to represent the posterior border of thepalatal bone, malar process, and suture connecting the malar bone arethen made, which represent the extent of the growth from the time ofthe eruption of the second temporary molar to that of the eruption ofthe first permanent one. The permanent central and lateral incisorsare then drawn in position according to the lines of the arch it is in-tended to represent, in advance of the temporary ones. The first andsecond bicuspids are then placed in position. These are followed bythe insertion of the cuspids, second and third permanent molars, withthe proper enlargement of the other portion of the drawing. Fig. 4.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectdentist, bookyear1890
