Tooth ridge anatomy

  • What is lingual ridge?

    The lingual ridge extends from the cusp apex towards the cingulum, and it divides the lingual fossa into two smaller fossae - mesial and distal lingual fossae..

  • What is the ridge of a tooth?

    Ridge – A linear elevation of enamel found on the tooth.
    Marginal ridge – Elevated area of enamel that forms the mesial and distal borders of the lingual surface of the anterior teeth and the mesial and distal borders of the occlusal surface of the posterior teeth..

  • Which tooth has cusps and ridges?

    B) Triangular ridges: these descend from the tips of the cusps of molars and premolars toward the central part of the occlusal surfaces.
    They are so named because the slopes of each side of the ridge are inclined to resemble two sides of a triangle..

  • The cusp ridges are numbered 1 to 4 and converge at the cusp tip (at the “X”).
    Ridge 1 is the mesial cusp ridge of the buccal cusp; ridge 2 is the distal cusp ridge of the buccal cusp; ridge 3 is the more subtle buccal ridge of the buccal cusp; and 4 is the triangular ridge of the buccal cusp.Sep 12, 2021
  • The lingual ridge extends from the cusp apex towards the cingulum, and it divides the lingual fossa into two smaller fossae - mesial and distal lingual fossae.
  • Triangular ridge premolars toward the central part of the occlusal surfaces.
    They are so named because the slopes of each side of the ridge are inclined to resemble two sides of a triangle.
    They are named after the cusps to which they belong, e.g. the triangular ridge of the buccal cusp of the maxillary first premolar.
Ridge – A linear elevation of enamel found on the tooth. Marginal ridge – Elevated area of enamel that forms the mesial and distal borders of the lingual surface of the anterior teeth and the mesial and distal borders of the occlusal surface of the posterior teeth.

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