Principles and practice of operative dentistry . of the median line, opposite the superior incisors, withwhich they occlude in cutting food. The developmental lines are thesame, but the tubercles upon the morsal edge and the labial grooves areless strongly marked than in the superior incisors. The lower central incisor is the smallest tooth of the dental series ofman. It is chisel-shaped in form. The crown, viewed mesio-distally andlabio-lingually, is composed of a double wedge. The widest portion of thecrown is the morsal edge, which is thin and straight. From this point itslopes slightly to
Principles and practice of operative dentistry . of the median line, opposite the superior incisors, withwhich they occlude in cutting food. The developmental lines are thesame, but the tubercles upon the morsal edge and the labial grooves areless strongly marked than in the superior incisors. The lower central incisor is the smallest tooth of the dental series ofman. It is chisel-shaped in form. The crown, viewed mesio-distally andlabio-lingually, is composed of a double wedge. The widest portion of thecrown is the morsal edge, which is thin and straight. From this point itslopes slightly to the cervix, where it is only about one-half as wide as atthe edge. The labial surface (Fig. 17) has the outline of a slender wedge, its widestportion at the morsal edge, and its narrowest at the cervix. It is nearlystraight, or only slightly convex near the edge, but as it approaches thecervix it becomes more rounded and convex. The cervical margin is welldefined and concave towards the root. The mesio-labial and disto-labial !>abial grooves. Fig. 17.—Inferior right central incisor,(Enlarged.) riuiit central incisor, lingual surface.(Enlarged.)
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectdentist, bookyear1901
