Dental anatomy of maxillary first premolar

  • Can maxillary first premolar have 3 roots?

    Although maxillary first premolars usually have 1 or 2 roots, the presence of 3-rooted teeth is considered the most common anatomic variation, with an overall inci- dence of 1.7% (range, 0.4%–9.2%) (3–5)..

  • Does the maxillary first premolar have a transverse ridge?

    Thus a transverse ridge exists on the occlusal surface of a maxillary first premolar.
    It is formed by the union of the two triangular ridges—the lingual cusp ridge of the buccal cusp and the facial cusp ridge of the lingual cusp..

  • How is the access cavity preparation for the first maxillary premolar?

    First Maxillary Premolar
    The access preparation is begun from the occlusal surface.
    It is sometimes necessary to cut the cusps to get an adequate view.
    If the access cavity is not adequately extended buccally and palatally; pulpal remnants will be left undetected..

  • What is the anatomy of premolar teeth?

    Overall, every adult has 8 premolar teeth.
    This teeth type is responsible for food crushing, grinding, grasping and chewing.
    The premolars usually have only one bifurcated root, while the crown is cuboid-shaped.
    The biting area (occlusal surface) of this teeth type usually presents with two cusps..

  • What is the occlusal anatomy of the maxillary first premolar?

    The first maxillary premolar is narrower mesiodistally than it is buccolingually, and it has an oval occlusal outline with a very sharp mesiobuccal line angle.
    From the height of the contour, the buccal outline of this tooth is flatter, but the lingual is more rounded..

  • What is the unique feature of the maxillary first premolar?

    The maxillary first premolar is UNIQUE because it is the only premolar (or canine) that has its mesial cusp ridge longer than the distal cusp ridge..

  • Each cusp has four ridges emanating from it, and each ridge is named according to its location: facial, lingual, distal, and mesial.
    FIG. 14.
    1. The occlusal surface of a maxillary right first premolar
  • First Maxillary Premolar
    The access preparation is begun from the occlusal surface.
    It is sometimes necessary to cut the cusps to get an adequate view.
    If the access cavity is not adequately extended buccally and palatally; pulpal remnants will be left undetected.
The first maxillary premolar contains two cusps called the buccal and lingual cusps. The lingual cusp is shorter and smaller, and it is slightly displaced to the mesial surface. The highest point of each cusp is called the cusp apex.
The maxillary first premolar has two cusps, a buccal and a lingual, each being sharply defined. The buccal cusp is usually about 1 mm longer than the lingual cusp. The crown is angular, and the buccal line angles are prominent.

What is a maxillary first premolar?

The maxillary first premolar is the first posterior tooth in the maxillary dental arch

There are four premolars in the maxillary dental arch two in each quadrant

The term premolar is used for these teeth because these teeth are anterior to the permanent molars

The maxillary first premolar has two cusps one buccal and one palatal cusp

What is the morphological structure of a maxillary molar?

The buccal, lingual, mesial, and distal surfaces of the maxillary molars are all convex

The occlusal surface is rectangular

First Molars – The maxillary first molars (tooth B, I) morphologically resemble both a molar and a premolar

Its occlusal surface consists of the mesiobuccal, distolingual, mesiolingual, and distobuccal cusps

Why is the first premolar important?

The first premolar because of its morphology and position in the dental arch assist canine in the tearing function and molars in the grinding function

The first premolar has succeeded the deciduous maxillary first molar tooth

Following is a summary of the chronology of development and eruption of the maxillary first premolar

The maxillary first premolar is the first posterior tooth in the maxillary dental arch. There are four premolars in the maxillary dental arch two in each quadrant. The term premolar is used for these teeth because these teeth are anterior to the permanent molars. The maxillary first premolar has two cusps one buccal and one palatal cusp.

There are two cusps on maxillary first premolars, and the buccal (closest to the cheek) cusp is sharp enough to resemble the prehensile teeth found in carnivorous animals. There are no deciduous maxillary premolars. Around 10-11 years of age, the primary molars are shed and the permanent premolars erupt in their place.

The first maxillary premolar is narrower mesiodistally than it is buccolingually, and it has an oval occlusal outline with a very sharp mesiobuccal line angle. From the height of the contour, the buccal outline of this tooth is flatter, but the lingual is more rounded.

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