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CROWN Occlusal surface

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CROWN
Occlusal surface
The characteristic features of this tooth are best seen from an occlusal view. The outline of the tooth is ovoid, being wider buccally than lingually.
Two cusps are present, one buccal and one palatal. The taller and wider cusp is buccal. The two cusps are joined at the mesial and distal margins by marginal ridges and are separated by a mesiodistally occlusal fissure, which continues over the mesial marginal ridge.
The mesial and distal surfaces converge palatally. The mesiobuccal and distobuccal corners are less rounded than the mesiopalatal and distopalatal corners.