7 Questions
What is the basic structural unit of enamel?
Enamel rods
What is the primary composition of enamel?
Inorganic material
Which part of the tooth provides support for enamel?
Dentin
What is the specific gravity of enamel?
2.8
Which type of enamel rods offer the greatest resistance to the cusps and incisal areas?
Gnarled enamel rods
What is the function of enamel rod sheaths?
To offer resistance to acid
Can enamel undergo repair from carious lesions or trauma?
No
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.
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.
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