Podcast
Questions and Answers
What is the term used for the presence of extra roots on a tooth?
What is the term used for the presence of extra roots on a tooth?
Which tooth is commonly associated with accessory roots?
Which tooth is commonly associated with accessory roots?
What happens to the enamel organ during active tooth eruption?
What happens to the enamel organ during active tooth eruption?
What occurs after enamel apposition halts at the crown?
What occurs after enamel apposition halts at the crown?
Signup and view all the answers
Which statement best describes the reduced enamel epithelium (REE)?
Which statement best describes the reduced enamel epithelium (REE)?
Signup and view all the answers
During which process does the enamel organ undergo compression?
During which process does the enamel organ undergo compression?
Signup and view all the answers
What is the main role of ameloblasts once enamel apposition ceases?
What is the main role of ameloblasts once enamel apposition ceases?
Signup and view all the answers
What is a significant outcome of developmental disturbances during root formation?
What is a significant outcome of developmental disturbances during root formation?
Signup and view all the answers
What are tubercles in tooth development?
What are tubercles in tooth development?
Signup and view all the answers
During which stage do the inner enamel epithelium (IEE) cells differentiate into ameloblasts?
During which stage do the inner enamel epithelium (IEE) cells differentiate into ameloblasts?
Signup and view all the answers
What function does the outer enamel epithelium (OEE) perform during enamel production?
What function does the outer enamel epithelium (OEE) perform during enamel production?
Signup and view all the answers
What is the primary consequence of a disturbance during the cap stage of tooth development?
What is the primary consequence of a disturbance during the cap stage of tooth development?
Signup and view all the answers
What process involves the movement of the tooth through the surrounding tissues during the eruption phase?
What process involves the movement of the tooth through the surrounding tissues during the eruption phase?
Signup and view all the answers
What is a potential result of developmental disturbances during dental eruption?
What is a potential result of developmental disturbances during dental eruption?
Signup and view all the answers
What happens to the reduced enamel epithelium after the tooth erupts?
What happens to the reduced enamel epithelium after the tooth erupts?
Signup and view all the answers
Which age range is associated with the bell stage of primary dentition?
Which age range is associated with the bell stage of primary dentition?
Signup and view all the answers
What is the primary role of the outer cells of the dental papilla in root dentin formation?
What is the primary role of the outer cells of the dental papilla in root dentin formation?
Signup and view all the answers
Which statement about HERS (Hertwig's epithelial root sheath) is correct concerning its role in dentin formation?
Which statement about HERS (Hertwig's epithelial root sheath) is correct concerning its role in dentin formation?
Signup and view all the answers
What occurs after the disintegration of the root sheath in root dentin formation?
What occurs after the disintegration of the root sheath in root dentin formation?
Signup and view all the answers
What is the initial product secreted by odontoblasts after differentiation in the root area?
What is the initial product secreted by odontoblasts after differentiation in the root area?
Signup and view all the answers
Why is enamel absent in the roots of teeth?
Why is enamel absent in the roots of teeth?
Signup and view all the answers
During root dentin formation, what remains between the inner enamel epithelium and odontoblasts?
During root dentin formation, what remains between the inner enamel epithelium and odontoblasts?
Signup and view all the answers
How does the process of dentinogenesis differ in the crown area compared to the root area?
How does the process of dentinogenesis differ in the crown area compared to the root area?
Signup and view all the answers
Which of the following processes occurs after root dentin formation is completed?
Which of the following processes occurs after root dentin formation is completed?
Signup and view all the answers
Study Notes
Developmental Disturbances During Root Formation
- Teeth may have supernumerary roots, leading to extra or accessory roots.
- Common occurrences include mandibular canines and maxillary first premolars with accessory roots.
Active Eruption
- Active eruption begins after enamel apposition ceases in tooth crowns.
- Ameloblasts deposit an acellular dental cuticle on the enamel surface.
- The enamel organ layers compress to form reduced enamel epithelium (REE), consisting of flattened cells.
Developmental Disturbances During Cap Stage
- Teeth can develop tubercles or extra cusps, manifesting as small, round extensions of enamel.
Bell Stage
- Occurs around the 11th to 12th week of primary dentition development, characterized by a bell shape.
- Involves processes of proliferation, differentiation, and morphogenesis.
- Outer enamel epithelium (OEE) serves as a protective barrier, while inner enamel epithelium (IEE) differentiates into enamel-secreting ameloblasts.
Root Dentin Formation
- Induced differentiation of outer cells in the dental papilla leads to the formation of odontoblasts in the root area.
- The Hertwig's epithelial root sheath (HERS) induces odontoblast differentiation but does not form enamel; hence, roots lack enamel.
- After odontoblast differentiation, these cells secrete predentin.
- A basement membrane remains between the IEE and the odontoblasts during root formation.
- Following the completion of root dentin formation, the basement membrane and HERS disintegrate, leading to the formation of epithelial rests of Malassez (ERM).
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
Explore how developmental disturbances can affect root formation in teeth. This quiz covers topics such as supernumerary roots and their implications in dental health, based on the insights from Fehrenbach and Weiner's work in dental hygiene.