Podcast
Questions and Answers
What is the primary inorganic component of dentine?
What is the primary inorganic component of dentine?
- Calcium phosphate
- Calcium fluorapatite
- Calcium hydroxyapatite (correct)
- Calcium carbonate
What percentage of dentine is made up of organic materials?
What percentage of dentine is made up of organic materials?
- 10%
- 50%
- 20% (correct)
- 30%
What is the major type of organic material found in dentine?
What is the major type of organic material found in dentine?
- Carbohydrates
- Collagen (correct)
- Lipids
- Non-collagenous proteins
How does the size of calcium hydroxyapatite in dentine compare to that in enamel?
How does the size of calcium hydroxyapatite in dentine compare to that in enamel?
Which of the following components has the least proportion in the organic material of dentine?
Which of the following components has the least proportion in the organic material of dentine?
Flashcards
Dentin
Dentin
A hard, yellowish tissue that makes up the bulk of the tooth, located beneath the enamel.
Calcium Hydroxyapatite
Calcium Hydroxyapatite
The main inorganic component of dentin, similar to the mineral in bone and enamel.
70% Inorganic Minerals
70% Inorganic Minerals
The percentage of inorganic minerals that make up dentin.
Collagenous Matrix
Collagenous Matrix
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20% Organic Material
20% Organic Material
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Study Notes
Dentine Composition and Structure
- Dentine is primarily composed of inorganic minerals (approximately 70%) and organic material (approximately 20%).
- The inorganic component is primarily calcium hydroxyapatite, with crystals smaller than those found in enamel.
- The organic component is largely a collagenous matrix (about 18%).
- A smaller portion of the organic material consists of non-collagenous proteins and lipids.
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