Tooth Eruption Quiz and Flashcards

33 Questions

What is the direction of tooth movement during the prefunctional eruptive period?

Facial and occlusal

What happens to the jaws once the teeth meet in occlusion?

They separate

What type of movement occurs during the posteruptive stage?

Axial and mesial

What is the age range when the posteruptive stage is most active?

14-18 years

What leads the way during the histology of tooth eruption?

The fibrous cord or gubernacular cord

What is the purpose of the posteruptive stage?

To act as a compensatory mechanism

What type of movement occurs through bone remodeling and PDL reorganization?

Tilting movement

What is the role of macrophages and osteoclasts during tooth eruption?

To break down the bone between the tooth and the surface oral epithelium

What is the definition of tooth eruption?

The movement of a tooth from its developmental position within the jaws to its functional position in the oral cavity

What are the three stages of tooth eruption?

Pre-eruptive, eruptive, and post-eruptive stages

What occurs during the preeruptive stage of tooth eruption?

The crown starts to develop, and the tooth germ moves within the jaw

What is the principal direction of movement during the eruptive stage?

Occlusal or axial direction

What happens during the pre-oral phase of tooth eruption?

The crown starts to develop, and the tooth germ moves within the jaw

What is the significance of the preeruptive stage in tooth eruption?

It is the stage where the crown starts to develop

What is the meaning of the term 'active tooth eruption'?

The emergence of the crown into the oral cavity

What is the relationship between the primary and permanent incisor teeth during the preeruptive period?

The primary incisors erupt before the permanent incisors

What is the primary function of the gubernaculum canal during tooth eruption?

To provide a pathway for the erupting tooth

What is the role of the periodontal ligament in tooth eruption?

To traction the tooth into the oral cavity

What is the term for the process of bone resorption and formation in the alveolar process?

Bone remodeling

What is the term for the Canal left in the bony crypt where the dental lamina extended down to establish the germ for the 2nd tooth?

Gubernacular canal

What is the role of the alveolar bone in tooth eruption?

To undergo changes in shape and size during tooth eruption

What is the theory of tooth eruption that suggests the increase in root length forces the tooth into the oral cavity?

Root growth

What is the term for the process of tooth eruption, where the tooth moves from the jaw bone into the oral cavity?

Eruption

What is the role of the interradicular bone in multirooted teeth during tooth eruption?

To have a fairly significant role in the eruption process

What is the primary role of the periodontal ligament in tooth eruption?

Providing the necessary force for eruption

Which of the following is NOT a clinical consideration related to tooth eruption?

Root resorption

What type of pressure is present in pulpal tissues and the periodontal ligament?

Vascular pressure

What is the term for teeth present in the oral cavity at birth?

Natal teeth

What causes the impaction of teeth?

Lack of space in the jaw

Which stage of eruption is characterized by gingival recession onto and down the cementum with loss of alveolar crest bone?

Post-eruption stage

What is the theory behind the role of the periodontal ligament in tooth eruption?

The periodontal ligament provides the necessary force for eruption

What is a common clinical consideration related to tooth eruption?

Teething leading to pain and fever

What is the term for the process of teeth breaking out through the oral epithelium?

Teething

Study Notes

Tooth Eruption

Tooth eruption is the process of movement of a tooth from its developmental position within the jaws to its functional position in the oral cavity.
The term active tooth eruption implies the emergence of the crown into the oral cavity.
Three stages of tooth eruption: preeruptive, eruptive, and post-eruptive stages.

Preeruptive Stage

Begins as the crown starts to develop.
Total bodily movement of the tooth germ.
Growth in which one part of the tooth germ remains fixed while the rest continues to grow, leading to a change in the center of the tooth germ.

Eruptive Stage

Tooth moves from its position within the bone of the jaw to its functional position in occlusion.
Begins with the development of the root.
Principal direction of movement is occlusal or axial.

Post-Eruptive Stage

Begins when the teeth come into occlusion and continues until they are lost or death occurs.
Type of movement is axial and mesial migration.
Acts as a compensatory mechanism, most active between the ages of 14 and 18 years of age.

Theories of Eruption

Root growth theory: increase in root length forces the tooth into the oral cavity.
Bone remodeling theory: alveolar bone changes involve both formation and resorption.
Periodontal ligament traction theory: periodontal ligament has a role to play in eruption.
Vascular pressure in dental tissues theory: vascular pressures in pulpal tissues and periodontal ligament have a direct eruptive role.

Tooth Movement

Axial movement: in the long axis of the tooth due to root growth and bone remodeling.
Drifting movement: e.g., mesially, laterally, due to bone remodeling and PDL reorganization.
Tilt movement: by bone remodeling and PDL reorganization.
Rotatory movement: basil.

Clinical Considerations

Teething: Breaking out of teeth through oral epithelium leading to pain and fever.
Variation in schedule of eruption.
Premature eruption.
Natal teeth: teeth present in the oral cavity at time of birth, commonly deciduous mandibular central incisor.
Impaction of teeth: due to lack of space in the jaw and failure of eruption, commonly affecting 3rd molars and maxillary canines.

Learn about the process of tooth eruption, its stages, and types. Understand the difference between active and passive tooth eruption. A quiz for dentistry students and oral health professionals.

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