Dental Anomolies Flashcards

1
Q

missing teeth major differential

also called?

A

Ectodermal dysplasia

hypodontia, oligodontia, anodontia

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2
Q

macrodontia disease mechanism

A

cause unknown - but vascualr abnormalities

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3
Q

see macrodontia on one side?

A

bilaterally – more likely congenital / unknonw cause

if one area - could be significant

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4
Q

has transposition been reported in primary teeth?

A

no

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5
Q

fusion vs gemination difference

A

fusion – one less tooth

number of teeth is decreased by one with this

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6
Q

concrescence

A

fusion of roots together by the cementum

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7
Q

gemination

A

looks like fusion but when count number of teeth – will remain normal

NORMAL NUMBER OF TEETH

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8
Q

main way to recognoze dilaceration

A

bullseye – ROOT apex curves and then can see either buccal or lingually the opening

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9
Q

*dens invaginatis

A

ingrwoing of enamel into pulp space

common location is lateral incisor

more severe where deforamties in crown of tooth
- dens in dente

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10
Q

spectrum of dens invaginatus

A

dens invaginiatis < in dente < dialted odontoma

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11
Q

dialted odontoma

A

associated with third molar

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12
Q

most common appearance of AI

A

hypoplastic type

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13
Q

Dentinogenesis and OI appears? *

A

bulbous crown

narrow roots

cervical constriction!!

root canals absent or thin

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14
Q

Dentin Dysplasia * type I

A

radicualr

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15
Q

type II of dentin dysplasia *

A

coronal

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16
Q

bulcous crowns

A

Dentinogen Imperfecta

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17
Q

narrow roots

A

DI

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18
Q

flame shaped pulp

A

dysplasia type II

- coronal

19
Q

which has normal root?

A

type II outline

20
Q

W shaped molar root?

A

Type I dentin dysplasia

21
Q

ghost teeth

A

regional odontodysplasia

22
Q

enamel pearl * location

A

APICAL TO CEJ on the roots

23
Q

enamel pearl * location

A

APICAL TO CEJ on the roots

24
Q

turners hypoplasia location?

A

localized

  • not bilateral
  • usually infection or trauma

perm tooth with local enamle hypoplastic defect in crown caused by infection from primary tooth or trauama

25
Q

turners hypoplasia location?

A

localized

  • not bilateral
  • usually infection or trauma

perm tooth with local enamle hypoplastic defect in crown caused by infection from primary tooth or trauama

26
Q

mulberry molars associated with?

A

congenital syphilis cases

27
Q

attrition *

A

PHYSIOLOGICAL WEARING

28
Q

DD with atterition

A

AI – this will be affecting all the teeth and congenital

29
Q

abrasion *

A

NON-PHYSIOLOGIC FRICTION INDUCED WEARING

30
Q

EROSION by?

A

CHEMICAL ACTION

-

31
Q

erosion DD?

A

abrasion

but in erosion – esdges of erosion lesionos are usually more roundede than abrasion

32
Q

*external resorption

A

PDL space is in tact

can have overlap of pulp space

also if on the side more apparent for external

33
Q

*internal resorption

A

widening the canal space

34
Q

pulp stones implication

A

root canal treatment – more difficult

35
Q

*hemifacial microsomia DD

A

condylar hypoplasis

  • but this one EFFECTS THE EARS TOO
36
Q

*Treacher collins syndrome

A

underdevelopment of zygomatic bones

  • mandible will be down-turned

downward inclination of palpebral fissure

underdevelopemetn

37
Q

see a lot of supernumerary teeth?

A

Cleidocranial Dysaplsia

38
Q

Cleidocranial Dysaplsia * clinical and imaging features

A

hypoplastic maxilla and aplasia or HYPOPLASIA OF CLAVICLES BUT NORMAL SIZED MANDIBLE WITH MULTIPLE SUPERNUMERARY TETEH

39
Q

*lingual salivary gland depression location?

A

more often than not BELOW THE CANAL

40
Q

salivary gland depression appearance

A

WD corticated round , ovoid

41
Q

*focal osteoporotic bone marrow

A

variation of normal anatomy

lamina dura in tact *

surrounding bone is normal trabeculation

42
Q

if missing and conicical shaped think?

A

ectodermal dysplasia

43
Q

hypercementosis

A

be able to recognize this — LD and PDLspace encompasses the enlargement