Dental anatomy of maxillary first molar

  • What are the characteristics of the first maxillary molar?

    It has a rhomboid shape, and its mesiodistal length is slightly smaller than the buccolingual length.
    The buccal mesiodistal length of the first maxillary molar is narrower than the same palatal length.
    The cervical distobuccal line angle is concave and rounded, and it is a common site for plaque retention..

  • What is the tooth morphology of the upper first molar?

    Upper first molar has five cusps, fifth one called 'cusp of carabelli'.
    Lower first molar has five cusps, three buccal and two lingual.
    All other molars have four cusps.
    Roots in third molars vary in number, uppers are often fused together..

  • Mandibular first molars usually have two roots (Fig. 1.74), one mesial and one distal.
    The mesial root exits the crown in a mesial direction and then gradually curves distally in the apical third.
    The distal root is narrower buccolingually but equal in mesiodistal width compared to the mesial root.
The maxillary first molars are three rooted, two buccal and one palatal. The mesiobuccal root is broad in the buccopalatal plane and narrow in the mesiodistal plane, similar to a maxillary premolar root configuration. The root generally exits the crown mesially and can abruptly curve distally.

How many molars are in the maxillary arch?

In the maxillary arch, there are three molars in each quadrant

The maxillary first molar is the largest tooth in the maxillary dental arch

The tooth has four well-developed cusps and one accessory or supplementary cusp called the cusp of Carabelli

The maxillary first molar has three well-developed roots

What is a maxillary first molar?

The maxillary first molar is the largest tooth in the maxillary dental arch

The tooth has four well-developed cusps and one accessory or supplementary cusp called the cusp of Carabelli

The maxillary first molar has three well-developed roots

It erupts posterior to the deciduous maxillary second molar

What is the difference between maxillary and mandibular teeth?

Further, the name depends upon which arch the tooth is found in

The term, "maxillary", is given to teeth in the upper jaw and "mandibular" to those in the lower jaw

There are four classes of teeth: incisors, canines, premolars, and molars

The maxillary first molar is the largest tooth in the maxillary dental arch. The tooth has four well-developed cusps and one accessory or supplementary cusp called the cusp of Carabelli. The maxillary first molar has three well-developed roots. It erupts posterior to the deciduous maxillary second molar.

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