. The Dental cosmos. the sameas the length of the cusps of the molars. molars occlude with the buccal and lin-gual of the lowers.(10) (See Fig. 11.) In a careful study of the above occlu-sion one must not lose sight of a numberof important factors. The occludingcontact points must not be consideredas surfaces or cusps, but planes; andwhile the occlusion of the centrals andlaterals is a simple arrangement, thatof the canines, premolars, and molars ismore complicated. In the case of thecanine, in place of one cusp we find fourinclined planes, while the premolars oc-clude at eight instead of mere
. The Dental cosmos. the sameas the length of the cusps of the molars. molars occlude with the buccal and lin-gual of the lowers.(10) (See Fig. 11.) In a careful study of the above occlu-sion one must not lose sight of a numberof important factors. The occludingcontact points must not be consideredas surfaces or cusps, but planes; andwhile the occlusion of the centrals andlaterals is a simple arrangement, thatof the canines, premolars, and molars ismore complicated. In the case of thecanine, in place of one cusp we find fourinclined planes, while the premolars oc-clude at eight instead of merely twopoints. On the other hand, each of themolars presents sixteen inclined planes,and not four cusps or points. The four WEINBERGER.—NORMAL DENTAL ARCHES AND NORMAL OCCLUSION. 671 inclined planes of each cusp, in turn, first molar. The mesial incline of theocclude with four of the inclined planes mesio-buceal cusp of the upper firstof four different cusps. Thus. The molar occludes with the distal incline Fig.
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Keywords: ., bookcentury1900, bookdecade1910, bookiddent, booksubjectdentistry
