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D1F Oral Anatomy > Dental Anomalies > Flashcards

Dental Anomalies Flashcards

1
Q

Anomalies are more common in:
Maxillary or Mandibular?
Permanent or Primary?

A

Maxillary

Permanent

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2
Q

Condition where person has no eyebrows, eyelashes, nails, teeth (total anodontia), and less hair

A

Ectodermal Dysplasia

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3
Q

Partial Anodontia: Most commonly missing adult teeth (in order):

A
  1. Third molars (especially maxillary)
  2. Maxillary lateral incisors (1-2% of population)
  3. Mandibular second premolars (1%)
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4
Q

What primary teeth are most commonly missing?

A

Primary mandibular central incisors

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5
Q

Most common Extra/Supernumerary Teeth (in order):

A

(Mainly Permanent dentitions, 90% maxillary arch)

  1. Maxillary Incisor Area (Mesiodens between max centrals)
  2. Third Molar Area (Paramolar, Distomolar, Fourth Molar)
  3. Mandibular Premolar Area
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6
Q

Peg-shaped crown anomalies happen usually to _____ and rarely to _____ and they form from ____ lobe(s)

A

Maxillary lateral incisors

Maxillary central incisors

1

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7
Q

The most variable crown morphology happens with _____

A

Malformed Third Molars

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8
Q

One crown double in width; one root, one pulp chamber and canal

A

Gemination (Twinning)

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9
Q

Two adjacent crowns join together and appear double in width (two roots, two pulp chambers and canals)

A

Fusion

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10
Q

Congenital Syphilis causes ______ (wide incisors with an incisal notch) and _____ (extra tubercles on first molars)

A

Hutchinson’s Incisors

Mulberry Molars

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11
Q

Extra cusps between cusps

A

Tuberculum Intermedium

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12
Q

Extra cusps on distal marginal ridge

A

Tuberculum Sextum

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13
Q

Extra lingual cusp

A

Talon Cusp

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14
Q

Teeth that are extra big.

Most common teeth affected?

A

Macrodontia

Incisors and canines

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15
Q

Teeth that are extra small.

Most common teeth affected?

A

Microdontia

Max lateral incisors and 3rd molars

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16
Q

Anomaly more common in American Indians, Asians, Mongolians, and Eskimos

A

Shovel-shaped Maxillary Incisors

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17
Q

Flexion at CEJ

A

Dilaceration

18
Q

Severe bending of root

A

Flexion

19
Q

Little spheres of enamel with core of dentin (often near root furcation)

A

Enamel Pearls

20
Q

Root doesn’t taper to apex but widens out instead (Bull tooth)

A

Taurodontia

21
Q

Tooth within a tooth, seal entrance to prevent decay (5% of population)

A

Dens in Dente

22
Q

Thickening of cementum (and webbed roots) due to trauma/infection

A

Hypercementosis

23
Q

Joining of cementum of adjacent teeth after eruption (different from fusion which is before eruption)

A

Concrescence of Roots

24
Q

Shortened roots from hereditary or orthodontic movements

A

Dwarfed Roots

25
Q

Extra roots?

Most common teeth?

A

Accessory Roots

Mandibular Canine and Premolar (facial and lingual root);
Maxillary First premolar

26
Q

Tooth cannot erupt because of position

A

Impacted tooth

27
Q

Teeth switch places

A

Transposition

28
Q

Failure to complete eruption due to trauma/infection; loss of periodontal ligament, root fused to bone

A

Ankylosis

29
Q

Tooth erupts in weird spot (for example nose)

A

Ectopic Eruption

30
Q

Tooth eruption doesn’t reach occlusal plane?

Beyond occlusal plane?

Lingual to occlusal plane?

A

Infraversion

Supraversion

Linguaversion

31
Q

Too much fluoride -> mottled/pitted enamel

A

Flourosis

32
Q

Hereditary total or partial lack of enamel (primary/permanent)

A

Amelogenesis Imperfecta

33
Q

Pitted enamel (damage) can be caused by this illness

A

High Fever

34
Q

Cavitation or white spot from local trauma or infection like an abscess on primary tooth

A

Focal Hypoplasia (Turner’s Tooth)

35
Q

Faulty development of dentin (hereditary) (no dentin, no pulp chamber)

A

Dentinogenesis Imperfecta

36
Q

Drug is taken while tooth is forming to cause this stain

A

Tetracycline Stain

37
Q

Strips of green on teeth from bile duct blockage

A

Biliary Atrisia

38
Q

Tooth wear from tooth-to-tooth grinding (Bruxism)

A

Attrition

39
Q

Bending of tooth due to heavy occlusion with enamel chipping off at cervical

A

Abfraction

40
Q

Tooth wear by mechanical means (brushing, toothpaste, tobacco chewing)

A

Abrasion

41
Q

Tooth destruction from acids

A

Erosion

D1F Oral Anatomy (6 decks)

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