Question

the functions of the premolars? Know the anatomy of the lingual, labial and proximal surfaces Know the characteristics of the premolars. (2 examples are which has 2 roots, or 3 cusps)? Know eruption dates of premolar? Know the height of contour for the premolars? Which premolars are larger? What teeth are numbers correspond with the premolars? What does bifurcated mean? Know the angulations of the roots and crowns What is a marginal ridge? Know which premolar has a distinct mesial concavity? Answer ALL, please

Answer 1

Answer

There are four types of teeth. These are incisors, canines, premolar, and molar.

The function of premolar is tearing and crushing of food material and present between canine and molar teeth. these are transitional teeth.

Lingual surface - it is closet to the tongue

Labial surface - it is closet to the lips

proximal surface - side of the tooth that is touching another tooth. It also includes both mesial and distal surfaces between the adjacent teeth.

These are 2 premolars per quadrant

At least 2 cusps, buccal cusp always larger

These are Distal to the canines

These are Succedaneous

These have Shorter crown than anterior teeth

It has properties of both the anterior canines and posterior molars

It helps to molars in grinding, and canines in tearing

The eruption of premolar teeth takes place at 10 to 12 years of age.

The crest of curvature and greatest elevation or widest part of the tooth is the height of contour. It helps in deflection of food from the tissue.

The maxillary premolar is larger of premolars.

Eight premolar teeth

Lower left - 2

lower right -2

upper left- 2

and upper right - 2

The furcation of two rooted teeth is called bifurcation. Here the tooth divide into separate branches. example gums and teeth.

The angulation of the crown is distal angulation and lingual angulation. The roots are inclined distally.

It is an elevation of enamel forms the distal margin of the lingual area of an anterior tooth or the occlusive surface of a posterior tooth.

Maxillary premolar have  a distinct mesial concavity.