Tooth (sagittal section) Flashcards Preview

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Flashcards in Tooth (sagittal section) Deck (16):
1

The digestive system

Develops from a tube of endoderm that extends from the mouth to the anus
Extensions of the tube form the salivary glands, liver, gall bladder and pancreas

2

Teeth

20 Deciduous teeth, (8 incisors, 4 canines and 8 molars)
32 adult teeth (8 incisors, 4 canines, 8 premolars and 12 molars)

3

Crown

Portion visible above the gum

4

Root

Secured below the gum line

5

Neck

Crown and Root meet

6

Dentin

Core of the tooth, extends from the apex of the root in the neck and the crown

7

Enamel

Covers the dentin about the gum line
97% calcified matter, hardest substance contained in the body
No nerve supply

8

Cementum

Covers the tooth below the gum line

9

Periodontal membrane

Suspensory ligament to attach the cementum to the bony tooth socket/ THE JAW
Secure the gingiva to the underlying bone

10

Alveolar Bone

Spongy bone where the teeth rest
THE JAW BONE

11

Gingiva

Gums
can be infected and lead to tooth lose

12

Apical foramen

Opening at the apex of the tooth
Permits the entry of arteries, veins and lymphatic vessels and sensory nerves

13

Root cancal

Narrow channel that is connected to the larger space within the dentin

14

Pulp Cavity

The bulb-like structure, is the larger space within the dentin

15

Root Canal Procedure

Endodontic Therapy
Infection penetrates the pulp cavity and there is risk of tooth loss.
All vessels and sensory nerves are removed and filled in.

16

Number of roots

Incisors and Canine : 1
Pre molars: 1 - 2
Molars: 3 to 4