Anomalies of Root Formation

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Which of the following is a result of a disturbance in Hertwig's epithelial root sheath?

Accessory root canals (correct)

Exposed root dentin

Formation of dentin

Enamel pearls

What is the driving force for root formation?

Reduced dental epithelium (correct)

Epithelial diaphragm

Epithelial rests

Dental papilla

What is the function of the apical papilla in human root development?

To fuse with the oral epithelium

To allow for eruption of the tooth

To stimulate root and bone formation (correct)

To produce and release enzymes that degrade tissues

What is the function of the reduced enamel epithelium during eruptive tooth movement?

To break down the oral epithelium Signup and view all the answers

What happens after the initial emergence of a tooth in the oral cavity?

The alveolar process continues to develop Signup and view all the answers

What is the function of the dentogingival junction initially formed from the reduced enamel epithelium?

To form the initial junctional epithelium Signup and view all the answers

How long does it take for root formation to be complete after a tooth has been in function?

2-3 years Signup and view all the answers

Which of the following is responsible for the formation of multiple roots in teeth?

Epithelial diaphragm Signup and view all the answers

Which structure induces dental papilla cells to become Hertwig's epithelial root sheath (HERS)?

Reduced enamel epithelium (REE) Signup and view all the answers

What happens to the epithelial cells after root dentin formation?

They detach from the dentin Signup and view all the answers

What is the function of the Hertwig's epithelial root sheath (HERS)?

To induce DP outer cells to become root odontoblasts Signup and view all the answers

Which cells secrete cementum?

Cementoblasts Signup and view all the answers

What happens to the reduced enamel epithelium (REE) during tooth eruption?

It fuses with oral epithelium to form the junctional epithelium Signup and view all the answers

What is the source of cementoblasts?

Dental sac ectomesenchyme cells Signup and view all the answers

What is the fate of the epithelial rests of Malassez?

They degenerate and disappear Signup and view all the answers

What is the final stage of tooth root formation?

Cementogenesis Signup and view all the answers

What does the combination of protective ameloblasts and papillary layer form?

Reduced enamel epithelium (REE) Signup and view all the answers

What is the function of the periodontal ligament?

To anchor the tooth to the alveolar bone Signup and view all the answers

What happens to the Hertwig's epithelial root sheath (HERS) after root dentinogenesis?

It disintegrates and some remnants persist as epithelial rests of Malassez Signup and view all the answers

Which of the following can result in root anomalies?

All of the above Signup and view all the answers

When are roots considered complete?

After the tooth has erupted and is in function Signup and view all the answers

Which of the following is the correct sequence of events during tooth eruption?

Bone socket formation, root formation, eruption Signup and view all the answers

What is the remnant of the enamel organ that covers the unerupted crown?

Reduced enamel epithelium (REE) Signup and view all the answers

What does Hertwig's epithelial root sheath (HERS) induce in the dental papilla outer cells?

Root odontoblasts Signup and view all the answers

What happens to Hertwig's epithelial root sheath (HERS) after inducing root odontoblasts?

It disintegrates completely Signup and view all the answers

What is the role of the dental sac cells in cementogenesis?

To secrete collagen fibers Signup and view all the answers

What initially forms the dentogingival junction?

Reduced enamel epithelium (REE) Signup and view all the answers

Why is there no hemorrhage during tooth eruption?

The reduced enamel epithelium (REE) lacks blood vessels Signup and view all the answers

What contributes to cementum, periodontal ligament, and alveolar bone development?

Dental sac (follicle) Signup and view all the answers

What fills in the resorbed fundus during tooth eruption?

Bone trabeculae Signup and view all the answers

Which of the following is responsible for the formation of enamel pearls?

Epithelial rests Signup and view all the answers

Which of the following is responsible for the formation of multiple roots in teeth?

Differential growth of the epithelial diaphragm Signup and view all the answers

What happens to the reduced enamel epithelium during eruptive tooth movement?

Fuses with the oral epithelium Signup and view all the answers

What is the driving force for tooth eruption?

Crown formation Signup and view all the answers

What happens to the tissues between the reduced enamel epithelium and oral epithelium during tooth eruption?

They degenerate Signup and view all the answers

When is the root formation of a tooth considered complete?

1-1.5 years for deciduous teeth, 2-3 years for permanent teeth Signup and view all the answers

What is the fate of the epithelial rests of Malassez?

Most degenerate and disappear Signup and view all the answers

What is the function of the apical papilla during root formation?

Stimulates root and bone formation Signup and view all the answers

What is the function of the Hertwig's epithelial root sheath (HERS)?

Induction of dental sac cells Signup and view all the answers

What is the fate of the epithelial rests of Malassez?

They detach from root dentin and disintegrate Signup and view all the answers

What is the source of cementoblasts?

Dental sac ectomesenchyme cells Signup and view all the answers

What is the function of the dentogingival junction initially formed from the reduced enamel epithelium?

Protecting the underlying enamel Signup and view all the answers

What is the function of the reduced enamel epithelium during tooth eruption?

Produces and releases enzymes for tissue degradation Signup and view all the answers

What initially forms the dentogingival junction?

Reduced enamel epithelium Signup and view all the answers

Which structure induces dental papilla cells to become Hertwig's epithelial root sheath (HERS)?

Cervical loop of the enamel organ Signup and view all the answers

What happens to the epithelial cells after root dentin formation?

They detach from dentin to form the epithelial diaphragm Signup and view all the answers

Which of the following is responsible for the formation of multiple roots in teeth?

Hertwig's epithelial root sheath (HERS) Signup and view all the answers

What is the function of the periodontal ligament?

Contributes to cementum formation Signup and view all the answers

What happens to Hertwig's epithelial root sheath (HERS) after inducing root odontoblasts?

It detaches from root dentin and disintegrates Signup and view all the answers

What is the driving force for root formation?

Apical papilla Signup and view all the answers

What contributes to cementum, periodontal ligament, and alveolar bone development?

Dental sac (follicle) Signup and view all the answers

What is the function of the reduced enamel epithelium during eruptive tooth movement?

Covers unerupted crown Signup and view all the answers

What happens after the initial emergence of a tooth in the oral cavity?

Bone trabeculae fill in resorbed fundus Signup and view all the answers

Which of the following is the correct sequence of events during root dentinogenesis?

Hertwig's epithelial root sheath -> Cervical loop -> Root odontoblasts -> Root dentinogenesis Signup and view all the answers

What is the function of the epithelial rests of Malassez?

To persist after the disintegration of the Hertwig's epithelial root sheath (HERS) Signup and view all the answers

What is the fate of the reduced enamel epithelium (REE) during tooth eruption?

It fuses with the oral epithelium to form the junctional epithelium Signup and view all the answers

What is the function of the dental papilla in root development?

To secrete predentin Signup and view all the answers

What is the source of cementoblasts?

Dental sac cells Signup and view all the answers

What happens to the Hertwig's epithelial root sheath (HERS) after inducing root odontoblasts?

It disintegrates and some remnants persist as epithelial rests of Malassez Signup and view all the answers

What is the function of the reduced enamel epithelium (REE) during eruptive tooth movement?

To cover the unerupted crown Signup and view all the answers

Anomalies of Root Formation

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Questions and Answers

Which of the following is a result of a disturbance in Hertwig's epithelial root sheath?

What is the driving force for root formation?

What is the function of the apical papilla in human root development?

What is the function of the reduced enamel epithelium during eruptive tooth movement?

What happens after the initial emergence of a tooth in the oral cavity?

What is the function of the dentogingival junction initially formed from the reduced enamel epithelium?

How long does it take for root formation to be complete after a tooth has been in function?

Which of the following is responsible for the formation of multiple roots in teeth?

Which structure induces dental papilla cells to become Hertwig's epithelial root sheath (HERS)?

What happens to the epithelial cells after root dentin formation?

What is the function of the Hertwig's epithelial root sheath (HERS)?

Which cells secrete cementum?

What happens to the reduced enamel epithelium (REE) during tooth eruption?

What is the source of cementoblasts?

What is the fate of the epithelial rests of Malassez?

What is the final stage of tooth root formation?

What does the combination of protective ameloblasts and papillary layer form?

What is the function of the periodontal ligament?

What happens to the Hertwig's epithelial root sheath (HERS) after root dentinogenesis?

Which of the following can result in root anomalies?

When are roots considered complete?

Which of the following is the correct sequence of events during tooth eruption?

What is the remnant of the enamel organ that covers the unerupted crown?

What does Hertwig's epithelial root sheath (HERS) induce in the dental papilla outer cells?

What happens to Hertwig's epithelial root sheath (HERS) after inducing root odontoblasts?

What is the role of the dental sac cells in cementogenesis?

What initially forms the dentogingival junction?

Why is there no hemorrhage during tooth eruption?

What contributes to cementum, periodontal ligament, and alveolar bone development?

What fills in the resorbed fundus during tooth eruption?

Which of the following is responsible for the formation of enamel pearls?

Which of the following is responsible for the formation of multiple roots in teeth?

What happens to the reduced enamel epithelium during eruptive tooth movement?

What is the driving force for tooth eruption?

What happens to the tissues between the reduced enamel epithelium and oral epithelium during tooth eruption?

When is the root formation of a tooth considered complete?

What is the fate of the epithelial rests of Malassez?

What is the function of the apical papilla during root formation?

What is the function of the Hertwig's epithelial root sheath (HERS)?

What is the fate of the epithelial rests of Malassez?

What is the source of cementoblasts?

What is the function of the dentogingival junction initially formed from the reduced enamel epithelium?

What is the function of the reduced enamel epithelium during tooth eruption?

What initially forms the dentogingival junction?

Which structure induces dental papilla cells to become Hertwig's epithelial root sheath (HERS)?

What happens to the epithelial cells after root dentin formation?

Which of the following is responsible for the formation of multiple roots in teeth?

What is the function of the periodontal ligament?

What happens to Hertwig's epithelial root sheath (HERS) after inducing root odontoblasts?

What is the driving force for root formation?

What contributes to cementum, periodontal ligament, and alveolar bone development?

What is the function of the reduced enamel epithelium during eruptive tooth movement?

What happens after the initial emergence of a tooth in the oral cavity?

Which of the following is the correct sequence of events during root dentinogenesis?

What is the function of the epithelial rests of Malassez?

What is the fate of the reduced enamel epithelium (REE) during tooth eruption?

What is the function of the dental papilla in root development?

What is the source of cementoblasts?

What happens to the Hertwig's epithelial root sheath (HERS) after inducing root odontoblasts?

What is the function of the reduced enamel epithelium (REE) during eruptive tooth movement?

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