2019 Ng et al mandibular carnassial teeth malformation in 6 dogs micro CT and histological findings

Question 1

what are enamel pearls ?

Answer 1

Enameloma

Dysplastic nodule on tooth surface that consist of enamel only

often seen at furcation at multirooted teeth

interfere with normal PD attachment, predisposing tooth to focal periodontitis

can appear with dens invaginatus

Question 2

What is concrescence?

Answer 2

2 teeth are joined by cementum but not dentin

Question 3

What is concrescence?

Answer 3

2 teeth are joined by cementum but not dentin

Question 4

dilaceration?

Answer 4

abnormal curvature of a tooth

Question 5

What is dens invaginatus ?

Answer 5

abnormal tooth shape
due to abnormal focal or multifocal infolding of tooth

organized hard tissue of the tooth is disorganized forming a dense knot of dysplastic enamel with less dentin

Question 6

what is enamel hypoplasia

Answer 6

Enamel hypoplasia refers to inadequate deposition of enamel matrix,
i.e., when the density or mineralization is generally normal, but the enamel is thinner than normal.

Question 7

What is enamel hypomineralization ?

Answer 7

• inadequate mineralization of enamel matrix, resulting in white, yellow, or brown spots in the enamel. This often affects several or all teeth.
  The crowns of affected teeth may be soft and wear faster than normal teeth

Question 8

What is dentinogenesis imperfecta

Answer 8

Dentinogenesis imperfecta is a hereditary abnormality
in the formation of dentin. The clinical appearance of
affected teeth varies from gray to brownish violet to a
yellowish‐brown color, but the teeth can also exhibit a
characteristic unusual translucent or opalescent hue.

Question 9

what is fusion?

Answer 9

2 teeth that are joined with confluence of dentin

Question 10

what is concrescence?

Answer 10

2 teeth that are joined by cementum but NOT dentin

Question 11

List developmental abnormalities of dentition in the dog.

Answer 11

enamel hypoplasia
dentinogenesis imperfecta
developmental tooth discoloration
gemination
fusion
concrescence
dens invaginatus
enamel pearl
supernumerary roots
hyponumerary root
root dilaceration
regional odontodyplasia
root diclaeration
dentin dysplasia

Question 12

what is dental dysplasia

Answer 12

pulp chamber or pulp canal in root is mineralized

Question 13

Convergent root

Answer 13

2 normal formed roots are fused

Question 14

What is shown in this image? (AR Q)

Answer 14

Channel connecting abnormal tissue to the pulp

Question 15

What is shown in this image?

Answer 15

subtle enamel fissure
irregular thin ectopic enamel extend down the radicular surface in the furcation region ( black/white arrow head)
convergent roots

Question 16

What is shown in this image?

Answer 16

enamel fissure
convergent roots

Question 17

Answer 17

solid mass of abnormal hard tissue located on the floor of the pulp chamber