Dentistry Flashcards
What are the three components to a tooth?
Enamel, dentin, and pulp cavity
What are the two parts of a tooth?
Crown and root
What does the enamel cover?
Only the crown
What is the hardest substance in the body?
Enamel
How thick is enamel?
1-2 mm thick
Why is enamel so hard?
The atoms are arranged in an orderly fashion and contain calcium and floride
Where is dentin found?
Beneath the enamel and extends to the root tip
True of false: dentin makes up the bulk of the tooth?
True
When is dentin produced?
All the time
Will a younger animal have a bigger or smaller pulp cavity?
Bigger
What produces enamel?
Ameloblasts
What produces dentin?
Odontoblasts
What is primary dentin?
Dentin that forms before eruption
What is secondary dentin?
Dentin that forms after eruption
What is the tertiary dentin?
Protective dentin that forms after trauma from lack of enamel
What dentin is light, dark, and darker?
Primary dentin (light) secondary dentin(darker) tertiary dentin(darkest)
What are the two areas of the pulp cavity?
Pulp chamber an pulp canal
What does the pulp cavity contain?
Odontoblasts, connective tissue, blood vessels, lymph vessels, nerves
Where do vessels and nerves enter?
Through the apical delta (old) / foramen (young)
What is periodentium?
Supporting tissue structures that surround the tooth
What is the function of gingiva?
Protects tooth from trauma caused by chewing
What is the gingival margin?
Edge if free non attached gingiva
What is the gingival sulcus?
Space between the gingival margin and gingival attachment to the tooth
What is the cementum?
Bone like substance that covers the tooth root
What are the periodontal ligaments?
Fibrous structures that insert into attached gingiva cementum and alveolar bone
What is the alveolar bone?
Forms socket jot which the tooth sits.
What is alveolar bone not as hard as regular bone?
So soft tissues can embed into it
What is coronal?
Towards the crown
What is apical
Towards the root
What is buccal/labial?
Towards the cheek or lips
What is palatial or lingual?
Towards the palate or younger
What is occlusal?
Grinding surface of the tooth
What is medial?
Towards the midline
What is distal?
Farthest from midline
What is supra gingival?
Above the gums
What is sub gingival?
Below the gums
How do the incisor teeth meet the other incisor teeth?
They occlude
What are the incisor teeth used for?
Nibbling, tearing small pieces of tissue, grooming