Principles and practice of operative dentistry . Fig. 71.—Inferior right first molar, distal surface.(Enlarged.) Lingual grooveFig. 72.—Inferior right first molar, morsal surface.(Enlarged.) CLASSIFICATION AND DESCRIPTIVE ANATOMY OF THE TEETH. 21 The mesio-morsal margin is deeply concaved, and the disto-morsal marginis notched, sometimes deeply, by the distal groove. The morsal surface (Fig. 72) is trapezoidal in form, the buccal side beingthe longest. The surface is surmounted by five cusi3S, designated as fol-lows : the rnesio-buccal, the median-huccal, the disto-buccal, the mesio-lingual,an
Principles and practice of operative dentistry . Fig. 71.—Inferior right first molar, distal surface.(Enlarged.) Lingual grooveFig. 72.—Inferior right first molar, morsal surface.(Enlarged.) CLASSIFICATION AND DESCRIPTIVE ANATOMY OF THE TEETH. 21 The mesio-morsal margin is deeply concaved, and the disto-morsal marginis notched, sometimes deeply, by the distal groove. The morsal surface (Fig. 72) is trapezoidal in form, the buccal side beingthe longest. The surface is surmounted by five cusi3S, designated as fol-lows : the rnesio-buccal, the median-huccal, the disto-buccal, the mesio-lingual,and the disto-lingual; three are arranged upon the buccal half of the sur-face, and two upon the lingual. The cusps are united at their bases byfour marginal ridges^ the mesio-marginal ridge, joining the mesio-buccal andthe mesio-lingual cusps ; the hucco-marginal ridge, jmting the mesio-buccal,median-buccal, and disto-buccal cusps; the lingua-marginal ridge, joiningthe mesio-lingual and disto-lingual cusps; and the disto-marginal ridge,uniti
Size: 1473px × 1696px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectdentist, bookyear1920
