Is a tooth a bone?
2 Answers
A tooth is not a bone.
Explanation:
Tooth and bone are two different tissues.
A tooth is placed within a bony cavity (inside jaw bone) in mammals. It is attached to bone by cementum .
Cells called odontoblasts form calcified dentine part of tooth. Bone cells are called osteoblasts.
Exposed surface of tooth remains covered by enamel , hardest substance of human body. Ameloblast cells which deposit enamel are eventually lost.
Innermost area of tooth is pulp cavity while bones have bone marrow. Pulp cavity remains open through root canal(s).
Moreover bones can regrow, teeth can not.
No. A tooth is not a bone.
Explanation:
Teeth and bones are both hard, white, and contain calcium and phosphorus, but the similarity ends there.
Bones and teeth differ in both structure and function.
Teeth
(From www.open.edu)
1. Makeup
The tooth is capped by enamel, the strongest and hardest substance in the body. The enamel is 96 % calcium hydroxyapatite.
2. Contents
The dental pulp contains nerves and blood vessels.
3. Function
The function of teeth is to cut and grind food into smaller particles for easier digestion.
4. Regeneration
Broken teeth cannot heal themselves. They need either physical repair or extraction.
Bones
1. Makeup
Bone is about 70 % hydroxyapatite, 27 % matrix, and 3 % water.
2. Contents
Bones contain collagen and marrow.
About 90 % of the matrix proteins in bone are collagen. Collagen is a tissue protein..
Red marrow fills the space in spongy bone and yellow marrow fills the shaft.
3. Function
Bones enable mobility and support for the body. They produce red and white blood cells and store minerals. They also secrete a hormone that triggers the production of insulin in the pancreas.
4. Regeneration
Broken bones can repair themselves.
