Difference Between First and Second Premolar

Maxillary. The first premolar will normally have two roots; other premolars are single rooted. The first premolar displays sharper, more prominent cusps with the buccal cusp being significantly larger than the palatal cusp; the second premolar has more rounded, shorter cusps that are similar in size and height.

1. How do you tell the difference between premolars?
2. What is the second premolar?
3. What are the first premolars?
4. Which premolar is the smallest?
5. How does a premolar look?
6. Which tooth has the longest root?
7. Which premolar has 2 roots?
8. Does the second premolar fall out?
9. Is the second premolar permanent?
10. How many premolars do we have?
11. How many roots does a premolar have?
12. How many roots does the upper second premolar have?

How do you tell the difference between premolars?

The mesial aspect shows the difference in cusp length between the first and second premolars. The cusps of the second premolar are shorter, with the buccal and lingual cusps more nearly the same length. Greater distance between the cusp tips widens the occlusal surface buccolingually.

What is the second premolar?

FMA. 55804. Anatomical terminology. The mandibular second premolar is the tooth located distally (away from the midline of the face) from both the mandibular first premolars of the mouth but mesial (toward the midline of the face) from both mandibular first molars.

What are the first premolars?

The mandibular first premolar is the tooth located laterally (away from the midline of the face) from both the mandibular canines of the mouth but mesial (toward the midline of the face) from both mandibular second premolars.

Which premolar is the smallest?

The mandibular first premolar is usually the smallest of all premolars.

How does a premolar look?

There are four premolars on top, and four on the bottom. Premolars are bigger than canines and incisors. They have a flat surface with ridges for crushing and grinding food into smaller pieces to make it easier to swallow. Baby molar teeth are replaced by adult premolars.

Which tooth has the longest root?

Canine teeth often have the longest root of all teeth in the human mouth and the last to fully erupt and fall into place; often around age 13.

Which premolar has 2 roots?

Maxillary premolars

The maxillary first premolar has variable morphology but is generally considered to have two roots and two canals (Fig. 1.58).

Does the second premolar fall out?

Do premolars fall out like their other baby teeth? ... Baby teeth, also called deciduous teeth, do not have premolars. Instead, in the places where adults have premolars, children have what dentists call first molars. Once these fall out, they are replaced by permanent premolars.

Is the second premolar permanent?

The permanent central incisors, lateral incisors, canines, and first and second premolars replace the primary dentition. The primary molars are replaced with the permanent premolars, and the permanent molars erupt posterior to those.
...
Permanent Dentition.

How many premolars do we have?

Premolars – next to your canine teeth are your premolars (also called bicuspid teeth). You have 8 premolars in total: 4 on your top jaw and 4 on the bottom. They are bigger and wider than your incisors and canine teeth, and are used for crushing and grinding food.

How many roots does a premolar have?

Typically incisors, canines and premolars will have one root whereas molars will have two or three.

How many roots does the upper second premolar have?

Maxillary second premolar is generally considered to have one root and one canal [2, 3, 6, 14].