Questions and Answers
Which statement is accurate regarding tooth morphology?
What is the defining characteristic of the anatomical root of a tooth?
Where does the cementoenamel junction (CEJ) reside?
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?
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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.