dentin abnormalities

Question 1

true or false? dentinogenesis starts at the bell stage

Answer 1

true

Question 2

odontoblasts produce _______.

Answer 2

dentin

Question 3

if a patient has a condition known as “rootless teeth” what is the term for this condition?

Answer 3

dentin dysplasia

Question 4

if a patient carried the gene that causes dentinogenesis imperfects or dentin dysplasia what percentage do they have of having a child with the same condition?

Answer 4

50% chance

Question 5

Since patients with Dentin Dysplasia may lose all teeth by age 40, what is the treatment recommended?

Answer 5

Implants or dentures

Question 6

After odontoblasts polarize they form a matrix of ____% collagen fibers and ____% noncollagenous proteins.

Answer 6

90%, 10%

Question 7

True or False? Ameleogenesis comes before Dentinogenesis

Answer 7

False

Question 8

Dentinogenesis Imperfecta is characterized by __________ or ___________ tooth color.

Answer 8

Blue-gray or yellow-brown

Question 9

True or False? Crowns are the ideal treatment for a patient with Dentin Dysplasia Type I.

Answer 9

False

Question 10

Essay: Explain one difference and one similarity between Dentinogenesis Imperfecta and Dentin Dysplasia Type I.

Answer 10

Both Dentinogenesis Imperfecta and Dentin Dysplasia are inherited disorders, caused by mutation of the gene that produces dentinsialophosphoprotein (a substance needed for the proper mineralization of dentin by the odontoblasts). A difference between Dentin Dysplasia Type I and Dentinogenesis Imperfecta is that Dentin Dysplasia will have “normal” appearing crowns, Dentinogenesis Imperfecta will have a blue-gray or yellow brown tooth. color