Disturbances Flashcards

1
Q

What is anodontia?

A

A condition without teeth; can be genetic or induced.

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2
Q

What is oligondontia?

A

Having few or scant teeth.

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3
Q

What is supernumerary teeth?

A

Having too many teeth.

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4
Q

What regions do supernumerary teeth typically occur?

A
  1. 3rd molar region
  2. Mandibular pre-molar region
  3. Mesiodens (between 8 &9)
  4. Cleidocranial dysplasia
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5
Q

What region do the supernumerary teeth typically arise palatally?

A

mesiodens

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6
Q

What stage does anodontia, oligodontia, and supernumerary teeth occur?

A

Initiation stage.

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7
Q

True or False; if you are missing a primary tooth you most likely will be missing that permanent tooth.

A

True; there is no successional dental lamina for the permanent tooth.

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8
Q

What are possible bud stage distrubances?

A

Microdontia & Macrodontia

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9
Q

What is microdontia?

A

Teeth are too small

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10
Q

What is macrodontia?

A

Teeth are too large

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11
Q

What are possible cap stage disturbances?

A

Dens in dente
Gemination
Fusion
(during morphogenesis so it effects shape)

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12
Q

What are distrubances associated with apposisiton/maturation?

A

Concrescence

Enamel Pearls

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13
Q

What is concrescence?

A

When two teeth fuse together.

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14
Q

What are enamel pearls?

A

Ameloblasts that form enamel around the basement membrane.

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15
Q

What is an ondontoma?

A

Tumor of enamel, dentin, pulp and cementum

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16
Q

Where are compound ondontomas typically found?

A

Mandibular pre-molar region

17
Q

Where are complex ondontomas typically found?

A

Radiopaque typically seen in maxillary molars.

18
Q

What is a dilaceration?

A

Sharp, acute end in the crown or root of the tooth. Typically seen in the root.

19
Q

What are dwarfed roots?

A

Extremely short roots compared to the crown. Normal root to crown ratios are 2:1, dwarfed are 1:1

20
Q

What is hypercementosis?

A

Excessive deposit of secondary cementum

21
Q

What is a cementoma?

A

Excessive deposit of secondary cementum that destroys bone in the process.