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Test Your Knowledge on Enamel

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Questions and Answers

What is the basic structural unit of enamel?

Dentin
Hydroxyapatite crystals
Enamel rods (correct)
Enamel protein

What is the primary composition of enamel?

Organic material
Dentin
Inorganic material (correct)
Cementum

Which part of the tooth provides support for enamel?

Pulp
Cementum
Dentin (correct)
Periodontal ligament

What is the specific gravity of enamel?

2.8 (B) Signup and view all the answers

Which type of enamel rods offer the greatest resistance to the cusps and incisal areas?

Gnarled enamel rods (D) Signup and view all the answers

What is the function of enamel rod sheaths?

To offer resistance to acid (D) Signup and view all the answers

Can enamel undergo repair from carious lesions or trauma?

No (B) Signup and view all the answers

Study Notes

Enamel is the hardest biologic tissue and covers the anatomical crowns of teeth.
Enamel needs dentin for support and provides the shape and contour of teeth.
Enamel is non-vital tissue and does not undergo repair from carious lesions or trauma.
Enamel is permeable to a certain extent and has a specific gravity of 2.8.
Enamel is composed of inorganic material (96-98%) and organic substance (2-4%).
Enamel rods are the basic structural unit of enamel and originate at the DEJ.
Enamel rods have a highly organized pattern of tightly packed hydroxyapatite crystal orientation.
Gnarled enamel rods offer the greatest resistance to the cusps and incisal areas.
Enamel rod sheaths contain more enamel protein and recrystallized hydroxyapatite crystals for acid resistance.
Interrod enamel is the substance that cements the rods together.

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Description

Test your knowledge on the hardest tissue in the human body - enamel! Learn about its composition, structure, and functions in teeth. From enamel rods to interrod enamel, discover the fascinating properties of this vital dental tissue. This quiz is perfect for anyone interested in dentistry or simply curious about the science behind teeth. Keywords: enamel, dentin, hydroxyapatite, structure, composition.