Principles and practice of operative dentistry . l surface (Fig. 43) viewed from the buccal aspect, looks like acuspid. In form the buccal surface is a long oval, surmounted by anacute point. It is convex in all directions. The buccal cusp is situateda little to the distal of the centre of the crown, while the curvature of thebuccal surface towards the lingual side places the buccal cusp nearly in acentral position to the long axis of the tooth. The lingual surface (Fig. 44) is convex mesio-distally, and nearly straightfrom cervix to morsal margin. The tooth is slightly bent at the cervixin a
Principles and practice of operative dentistry . l surface (Fig. 43) viewed from the buccal aspect, looks like acuspid. In form the buccal surface is a long oval, surmounted by anacute point. It is convex in all directions. The buccal cusp is situateda little to the distal of the centre of the crown, while the curvature of thebuccal surface towards the lingual side places the buccal cusp nearly in acentral position to the long axis of the tooth. The lingual surface (Fig. 44) is convex mesio-distally, and nearly straightfrom cervix to morsal margin. The tooth is slightly bent at the cervixin a lingual direction, which gives the crown a lingual inclination. Thelength of this surface depends upon the length of the lingual cusp orcingule ; usually it is only about half as long as the buccal surface. The mesial and distal surfaces (Figs. 45 and 46) are convex bucco-lingually, slightly flattened at the cervix, and becoming convex towardsthe morsal margin, which gives a bell shape to the crown when viewed fromthe buccal aspect. Buccal cusp.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectdentist, bookyear1920
