Early Tooth Development

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What is the name of the band of epithelium that invades the underlying ectomesenchyme along each of the future dental arches?

Oral ectoderm

Vestibular lamina

Dental lamina

Primary epithelial band (correct)

At about what age of the embryo does the primary epithelial band divide into dental lamina and vestibular lamina?

6th week

7th week (correct)

5th week

8th week

Which part of the embryo ruptures to establish a connection between the primitive oral cavity and the foregut?

Buccopharyngeal membrane (correct)

Oral ectoderm

Vestibular lamina

Dental lamina

What is the function of the dental laminae during tooth development?

Serve as the primordium for the ectodermal portion of the deciduous teeth Signup and view all the answers

Which part of the embryo forms an inner process called dental lamina and an outer process called vestibular lamina?

Primary epithelial band Signup and view all the answers

When does the buccopharyngeal membrane rupture to establish a connection with the foregut?

About the twenty-seventh day of gestation Signup and view all the answers

During which phase of tooth development does the differentiation of cells proceed to give rise to fully formed dental tissues, both mineralized and unmineralized?

Histodifferentiation phase Signup and view all the answers

Which stage of tooth development is characterized by the deposition of dental hard tissue such as dentin and enamel?

Apposition phase Signup and view all the answers

What type of swellings arise from the dental lamina in each jaw, corresponding to the future position of deciduous teeth?

Bud swellings Signup and view all the answers

What is the term used for the oral vestibule formed between the alveolar portion of the jaws and the lips and cheeks?

Vestibular lamina Signup and view all the answers

During which phase do the sites of the future teeth become established with the appearance of tooth germs along an invagination of the oral epithelium called dental lamina?

Initiation phase Signup and view all the answers

What is the term used for the round or ovoid swellings at ten different points arising from dental lamina in each jaw?

Tooth buds Signup and view all the answers

During which stage of tooth development does morphogenesis progress, with the deeper surface of the enamel organ invaginating to form a cap-shaped structure?

Cap stage Signup and view all the answers

What is poorly histodifferentiated but develops a greater distinction between rounded cells in the central portion and peripheral cells arranging to form outer and inner dental epithelium?

Enamel organ Signup and view all the answers

What occurs in the apposition phase of tooth development?

Deposition of dental hard tissue such as dentin and enamel Signup and view all the answers

What is characteristic of the bud stage in tooth development?

Appearance of enamel swellings at ten different points in each jaw Signup and view all the answers

Early Tooth Development

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