TEETH Flashcards
1
Q
Teeth is made up of ?
A
DENTINE (Mesodermal in origin)
2
Q
Which cells secrete dentine ?
A
ODONTOBLAST
3
Q
In how many parts is the teeth divided ?
A
- Crown - exposed part
- Neck - part embedded in the gums
- Root - part embedded in the socket of the jaw
4
Q
Why the growth of the teeth stop ?
A
The growth of the teeth stop because the pulp cavity closes after sometimes.
except - tusk of elephant(upper incisors) and walrus(upper canine)
5
Q
What present in the center of the teeth ?
A
PULP CAVITY is present in the center of the teeth and they are lined by odontoblast cells.
6
Q
What forms the hard chewing surface of the teeth ?
A
Enamel forms the hard outer covering
7
Q
What is enamel ?
A
- Enamel is the hardest part
- Ectodermal in origin
- Secreted by ameloblast cells
8
Q
What is cementum ?
A
- Also called Sharpey’s fiber
- Helps in the attachment of teeth
- With the advancement of the age cementum decay and the teeth fall off.
9
Q
What provides hardening to teeth ?
A
Calcium phosphate provides the hardening to the teeth.
10
Q
What are types of dentition present in the human beings?
A
- Thecodont
- Heterodont
- Diphyodont
- Bunodont
