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Questions and Answers
Which statement is accurate regarding tooth morphology?
Which statement is accurate regarding tooth morphology?
What is the defining characteristic of the anatomical root of a tooth?
What is the defining characteristic of the anatomical root of a tooth?
Where does the cementoenamel junction (CEJ) reside?
Where does the cementoenamel junction (CEJ) reside?
Which of these structures is NOT directly involved in the formation of the tooth crown?
Which of these structures is NOT directly involved in the formation of the tooth crown?
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What is the primary function of the cusp tips on tooth crowns?
What is the primary function of the cusp tips on tooth crowns?
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Which of these statements accurately describes the role of cementum in tooth structure?
Which of these statements accurately describes the role of cementum in tooth structure?
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Study Notes
Clinical Root Anatomy
- The root portion of a tooth can have a single apex (terminal end) or multiple apices, depending on the type of tooth.
- Single-rooted teeth are typically found in anterior teeth and some premolars.
- Multiple-rooted teeth can have a bifurcation (two roots) or trifurcation (three roots), dividing the root portion into multiple extensions or roots.
Characteristics of Roots in Different Teeth
- Anterior teeth (both maxillary and mandibular) have only one root each.
- Mandibular molars have two roots: a mesial root and a distal root.
- Maxillary molars have three roots: a mesiobuccal root, a distobuccal root, and a palatal root.
Tooth Structure
- Tooth structure consists of four tissues: Enamel, Dentin, Cementum, and Pulp
Tooth Tissues
- Enamel: a component of tooth structure
- Dentin: a component of tooth structure
- Cementum: a component of tooth structure
- Pulp: a component of tooth structure
Tooth Anatomy
- The root portion of the tooth is firmly fixed in the bony process of the jaw
- Each tooth is held in its position relative to others in the dental arch
- Incisal ridges and cusps form the cutting surfaces on tooth crowns
The Root
- The Anatomical Root is the portion of the tooth covered by cementum
Nerve Fibers and Their Functions
- C-nerve fibers transmit information related to three sensations: pain, temperature, and itch.
- A-delta nerve fibers are responsible for carrying information related to two sensations: pain and temperature.
- A-beta nerve fibers have a specific function of transmitting information related to the sensation of touch.
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Description
This quiz covers the anatomy of a tooth's root, including single and multiple roots, bifurcation, and trifurcation.
