How many cusps does the maxillary first molar have how many roots?

How many cusps does the maxillary first molar have how many roots?

Maxillary first molars are generally three-rooted with four root canals (Fig. 4.13). The additional canal is located in the mesiobuccal root.

How many cusp is a first molar?

There are usually five well-developed cusps on mandibular first molars: two on the buccal (side nearest the cheek), two lingual (side nearest the tongue), and one distal. The shape of the developmental and supplementary grooves, on the occlusal surface, are describes as being ‘M’ shaped.

Which is the largest cusp of maxillary first molar?

Mesiolingual cusp
Mesiolingual cusp – It is the largest cusp, but its tip is rounded and blunt. Distolingual cusp- It is the smallest cusp present. This article presents with four cases in which three cusped permanent maxillary first molar have been observed.

What are the roots of maxillary molars?

The maxillary first molar is the earliest permanent tooth that appears in the oral cavity and that makes it vulnerable to caries and furthers to the need of endodontic treatment. It has three roots [mesiobuccal (MB), distobuccal (DB), and palatal (P)] with four canals.

What is the root of the maxillary first molar?

THE ROOT The Root Maxillary first molar has three roots; 2 buccal , 1 Palatal Palatal root is long and slender Mesiobuccal root broader, curves distally. Distobuccal root narrow at base and a lot straighter Buccal roots are of equal size, smaller than the palatal root Level of bifurcation closer to the cervical line mesially than distally 17.

How many cusps does the maxillary molar have?

Canine teeth, otherwise known as cuspids, each possess a single cusp, while premolars, otherwise known as bicuspids, possess two each. Molars normally possess either four or five cusps. In certain populations the maxillary molars, especially first molars, will possess a fifth cusp situated on the mesiolingual cusp known as the Cusp of Carabelli .

Which is the largest permanent mandibular molar in the world?

The permanent mandibular first molar is the largest mandibular tooth and is rectangular in shape with three buccal and two lingual cusps. The occlusal surface has a central groove with mesial and distal fossae. This tooth has a root trunk and two substantial roots that are broad buccolingually and curve distally.

Where are the depressions on the maxillary root?

Depressions can also be found on the furcal side of the distobuccal and palatal roots. The overall average length of the maxillary first molar is 20.5 mm with an average crown length of 7.5 mm and an average root length of 13 mm.