20 Questions
Where is the vestibular lamina located in relation to the dental lamina?
Below the dental lamina
What is the name of the first stage of tooth development?
Bud stage
What is the lingual extension of the dental lamina called?
Successional lamina
Which theory proposes that epithelium assumes the dominant role in crown pattern formation?
Ectodermal theory
From which component do permanent molars develop?
Dental sac
Where does inner enamel epithelium differentiation first occur?
At the site of future tooth formation
What is the region where the inner and outer enamel epithelia meet at the rim of the enamel organ known as?
Enamel knot
What is the function of the stratum intermedium cells in enamel maturation?
Secreting enamel
What are the remnants of the dental lamina and lateral dental lamina called?
Epithelial root sheath of Hertwig
What is responsible for root development in tooth formation?
Dental sac
What is the lingual extension of the dental lamina called?
Dental lamina
Which theory proposes that ectomesenchyme assumes the dominant role in crown pattern formation?
Neural crest theory
Where does inner enamel epithelium differentiation first occur?
At the cap stage
What are the remnants of the dental lamina and lateral dental lamina called?
Dental sac
What is responsible for root development in tooth formation?
Hertwig's epithelial root sheath
What structure is responsible for mapping out the root and inducing dentin formation in the root area?
Epithelial root sheath of Hertwig
Where do the peripheral cells of the dental papilla differentiate into?
Odontoblasts, ameloblasts
What is the final stage of odontogenesis known as?
Rootogenesis
What determines the number of roots that are formed in teeth?
Number of enamel knots
What is the union of the root structure of two or more teeth through the cementum only called?
Concrescence
Study Notes
Tooth Development
- The vestibular lamina is located buccal to the dental lamina.
Initial Stages
- The first stage of tooth development is called initiation.
- The lingual extension of the dental lamina is called the successional lamina.
Crown Pattern Formation
- The epithelial histogenesis theory proposes that epithelium assumes the dominant role in crown pattern formation.
- The ectomesenchymal bud theory proposes that ectomesenchyme assumes the dominant role in crown pattern formation.
Permanent Molars
- Permanent molars develop from the dental sac.
Enamel Formation
- Inner enamel epithelium differentiation first occurs at the cusp tips.
- The region where the inner and outer enamel epithelia meet at the rim of the enamel organ is known as the enamel knot.
- Stratum intermedium cells function in enamel maturation.
Remnants of Dental Lamina
- The remnants of the dental lamina and lateral dental lamina are called the dental lamina remnants.
Root Development
- The dental papilla is responsible for root development in tooth formation.
- The structure responsible for mapping out the root and inducing dentin formation in the root area is called the Hertwig's root sheath.
- Peripheral cells of the dental papilla differentiate into odontoblasts.
Final Stages
- The final stage of odontogenesis is known as apposition.
Root Formation
- The number of roots formed in teeth is determined by the dental follicle.
- The union of the root structure of two or more teeth through the cementum only is called concrescence.
Test your knowledge on the stages and layers of tooth development with this quiz. From inner enamel epithelium differentiation to the formation of the dental lamina, this quiz covers key aspects of tooth development.
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