Chapter 2 abnormalities of teeth lecture 2 TEST #1

Question 1

Aside from lateral incisors what is the second most frequent site of a dens in dente?

Answer 1

-Central incisors

Question 2

What is the most common form of ectopic enamel?

Answer 2

-Enamel pearl

Question 3

What can an enamel pearl cause?

Answer 3

-Deep pockets

Question 4

What is taurodontism?

Answer 4

-Enlargement of the body and pulp chamber of a multi-rooted tooth, with apical displacement of the pulpal floor

Question 5

What syndromes are taurodontism associated with?

Answer 5

• Kleinfelters Syndrome
• Amelogenesis imperfecta
• Tricho-dento-osseous syndrome

Question 6

What is the tricho in tricho-dento-osseous syndrome?

Answer 6

-Kinky hair

Question 7

What is a non neoplastic deposition of excessive cementum that is continuous with the normal radicular cementum?

Answer 7

-Hypercementosis

Question 8

What can causes hypercementosis?

Answer 8

• Occlusal trauma

- Adjacent inflammation

Question 9

What is a systemic factor of hypercementosis?

Answer 9

-Paget’s disease of one

Question 10

What is a developmental alteration in the structure of enamel in the absence of a systemic disorder?

Answer 10

-Amelogenesis Imperfecta

Question 11

What are three subtypes of amelogenesis imperfecta?

Answer 11

• Hypoplastic (elaboration of the enamel matrix)
• Hypocalcified (Mineralization of the matrix)
• Hypomaturation (maturation of the enamel)

Question 12

T/F Only deciduous dentitions are involved in amelogenesis imperfecta.

Answer 12

False

-Both deciduous and permanent

Question 13

When you have the inadequate deposition of enamel matrix what type of amelogenesis imperfecta do you have?

Answer 13

-Hypoplastic

Question 14

What type of amelogenesis imperfecta has a snow capped appearance?

Answer 14

-Hypomaturation

Question 15

What type of amelogenesis imperfecta has enamel matrix that is laid down appropriately and begins to mineralize?

Answer 15

-Hypomaturation

Question 16

What type of amelogenesis imperfecta is when matrix is laid down appropriately but no mineralization occurs?

Answer 16

-Hypocalcified

Question 17

When enamel starts as yellow-brown or orange and becomes brown to black with rapid calculus apposition what type of amelogenesis imperfecta is that associated with?

Answer 17

-Hypocalcified

Question 18

What is the mutation of the DSPP associated with?

Answer 18

-Dentinogenesis imperfecta

Question 19

If osteogenesis imperfecta occurs with dentinogenesis imperfecta what is that termed?

Answer 19

-Osteogenesis imperfecta with opalescent teeth

Question 20

What dentitions are affected by dentinogenesis imperfecta?

Answer 20

-Both

Question 21

If a person as blue sclera what is that associated with?

Answer 21

-Osteogenesis imperfecta

Question 22

If a person appears clinically with a blue hue to their teeth what might they have?

Answer 22

-Dentinogenesis imperfecta

Question 23

T/F Enamel separates easily from underlying dentin in dentinogenesis imperfecta

Answer 23

True

Question 24

What are shell teeth?

Answer 24

-Normal thickness enamel with extremely thing dentin and dramatically enlarged pulps (associated with dentinogenesis imperfecta)

Question 25

What type of dentin dysplasia is closely related to Dentinogenesis imperfecta?

Answer 25

-Type II

Question 26

What are radiographic feature of dentinogenesis imperfecta?

Answer 26

• Bulbous crowns
• Cervical constriction
• Thin roots
• Early obliteration of root canals and pulp chambers

Question 27

What type of dentin dysplasia is termed rootless teeth?

Answer 27

-Type I

Question 28

What type of dentin dysplasia is autosomal dominant?

Answer 28

-Type I and Type II

Question 29

Clinically how do type I dentin dysplasia teeth appear?

Answer 29

-Normal

Question 30

Clinically how to type II dentin dysplasia teeth appear?

Answer 30

-Similar to dentinogenesis imperfecta (blueish hue)

Question 31

What type of dentin dysplasia has normal root length?

Answer 31

-Type II

Question 32

Type II dentin dysplasia can have altered pulpal anatomy, what does that appear as?

Answer 32

-Thistle-tube shaped (hot dog on a stick)

Question 33

What is regional odontodysplasia?

Answer 33

-“ghost teeth” a localized non-hereditary developmental abnormality of teeth with extensive adverse effects on the formation of enamel, dentin, and pulp