Tooth Anatomy Overview Quiz

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Questions and Answers

What is the living soft tissue that occupies the pulp cavity of a vital tooth?

Pulp (correct)

Dentin

Enamel

Cementum

Which part of the tooth is normally covered by enamel?

Anatomical crown (correct)

Clinical crown

Clinical root

Anatomical root

What does the cementoenamel junction separate?

Cementum from dentin

Dentin from cementum

Enamel from cementum (correct)

Enamel from dentin

Which division of the tooth surface could be divided horizontally or vertically into thirds?

Tooth surfaces Signup and view all the answers

What are line angles used for in the description of a tooth?

Describing tooth surfaces Signup and view all the answers

What do point angles aid in describing?

Posterior teeth surfaces Signup and view all the answers

What is the layer of hard, bonelike tissue that covers the dentin of the anatomical root of a tooth?

Cementum Signup and view all the answers

What is the amount of tooth visible in the oral cavity known as?

Clinical crown Signup and view all the answers

Which junction separates the cementum lining the anatomical root from the dentin of the root?

Dentine-cementum junction Signup and view all the answers

What does gingival recession refer to?

Clinical root < anatomical root Signup and view all the answers

What does clinical root refer to?

Clinical root > anatomical root Signup and view all the answers

How many line angles are there for posterior teeth?

Six Signup and view all the answers

What is the hard, mineralized tissue that covers the dentin of the anatomical crown of a tooth?

Enamel Signup and view all the answers

Which portion of the alveolar process is into which the roots are set?

Tooth socket Signup and view all the answers

How many calcified tissues make up the tooth?

Three Signup and view all the answers

What is the hard tissue that surrounds the pulp cavity and is covered by enamel in the anatomical crown?

Cementum Signup and view all the answers

Which teeth have multiple roots?

-Maxillary first premolar and mandibular molars Signup and view all the answers

What is the undivided portion of the root trunk crown called?

Root trunk Signup and view all the answers

Which tissue constitutes the main bulk of the tooth and surrounds the pulp cavity?

Dentin Signup and view all the answers

What divides the root portion into two roots for maxillary first premolar and mandibular molars?

Bifurcation Signup and view all the answers

What is the portion of the alveolar process into which the teeth are set called?

Crypt Signup and view all the answers

Which teeth have trifurcation dividing their root portion into three roots?

Maxillary molars Signup and view all the answers

Which tissue covers the dentin in the anatomical root?

Enamel Signup and view all the answers

Study Notes

Tooth Anatomy and Structures

Pulp cavity of a vital tooth is occupied by pulp, a living soft tissue.
Enamel covers the anatomical crown of a tooth, providing a protective layer.
The cementoenamel junction separates the enamel from the cementum, indicating a transition between these two hard tissues.

Tooth Surface and Descriptions

Tooth surfaces can be divided horizontally or vertically into thirds, a method typically used for division of the tooth surface.
Line angles are used for describing the edges formed by two tooth surfaces, facilitating clear communication about tooth structure.
Point angles help in describing the exact points where three surfaces meet on a tooth.

Tooth Composition and Characteristics

The hard, bonelike tissue covering the dentin of the anatomical root is called cementum.
The clinical crown refers to the amount of tooth visible in the oral cavity, which can differ from the anatomical crown due to factors like gum recession.
The junction between the cementum and dentin in the root is known as the cementodentinal junction.
Gingival recession refers to the pulling back of the gum tissue, exposing more of the tooth or its root.
The clinical root describes that portion of the tooth embedded in the alveolar process, typically not visible in the mouth.

Tooth Structure Details

There are eight line angles for posterior teeth that aid in precise tooth identification.
The hard, mineralized tissue that covers the dentin in the anatomical crown is enamel.
The portion of the alveolar process holding the roots is the alveolar bone.
A tooth is composed of four calcified tissues: enamel, dentin, cementum, and pulp.

Root and Tooth Variation

The hard tissue that surrounds the pulp cavity in the anatomical crown is dentin.
Molars typically have multiple roots, facilitating stability and support in the jaw.
The undivided portion of the root trunk crown is referred to as the root trunk.
The division of the root portion into two roots for maxillary first premolars and mandibular molars occurs at the furcation.
The portion of the alveolar process into which the teeth are set is known as the alveolar socket.
Teeth exhibiting trifurcation have three roots, commonly seen in maxillary molars.

Root Coverage

The dentin in the anatomical root is covered by cementum, ensuring protection and connection to the surrounding structures.

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Description

Test your knowledge of tooth anatomy and structural features including root and crown morphology, surface division, and anatomical landmarks. This quiz covers key concepts in dental anatomy and is suitable for students and professionals alike.