Principles and practice of operative dentistry . little to the mesial of the centre ofthe tooth, while the disto-buccal groove is near the disto-buccal grooves generally terminate near the middle of the surface in pits,which often become the seat of caries. The lingual surface (Fig. 69) is slightly convex in all directions, and in-clines towards the lingual. The surface is not so wide as the buccal sur-face on account of the convergence of the mesial and distal surfaces towardsthe lingual. The morsal margin forms a rather sharp angle with the mor-sal surface ; it is surmounted by t
Principles and practice of operative dentistry . little to the mesial of the centre ofthe tooth, while the disto-buccal groove is near the disto-buccal grooves generally terminate near the middle of the surface in pits,which often become the seat of caries. The lingual surface (Fig. 69) is slightly convex in all directions, and in-clines towards the lingual. The surface is not so wide as the buccal sur-face on account of the convergence of the mesial and distal surfaces towardsthe lingual. The morsal margin forms a rather sharp angle with the mor-sal surface ; it is surmounted by two cusps or tubercles, the mesial and dis-tal, and is divided through its centre by the lingmd groove, which separatesthe mesial and the distal cusps. This groove is shallow and rarelyextends farther than the middle of the surface. The mesial and distal surfaces (Figs. 70 and 71) are flattened bucco-lin-gually and convex from morsal margin to cervix, the distal surface morethan the mesial. They are wider at the morsal margin than at the
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectdentist, bookyear1920
