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Oral Pathology > Dental Anomalies > Flashcards

Dental Anomalies Flashcards

1
Q

Defines as something noticeable different or deviates from that which is ordinary or normal

A

Anomaly

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2
Q

A congenital or acquired abnormality in which a tooth or teeth deviate from normal form, function, and position

A

Dental Anomaly

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3
Q

What are the 2 dental anomalies based on the size of teeth?

A
  1. Microdontia
  2. Macrodontia
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4
Q

Teeth which are smaller than normal teeth and is outside the usual limits of variation

A

Microdontia

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5
Q

All teeth are smaller than normal and is common in dwarfism

A

True Generalized Microdontia

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6
Q

This is normal or slightly smaller than normal teeth present in jaws that are somewhat larger than normal and results to spacing

A

Relative Generalized Microdontia

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7
Q

A common condition where the most commonly affected teeth are maxillary lateral incisor and third molar

A

Microdontia involving only a single tooth

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8
Q

Refers to teeth that are larger than normal

A

Macrodontia

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9
Q

All teeth are larger than normal

A

True Generalized Macrodontia

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10
Q

This is more common and there is the presence of normal or slightly larger than normal teeth in small jaw resulting to crowding of teeth

A

Relative Generalized Macrodontia

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11
Q

A common type of macrodontia

A

Macrodontia of a single tooth

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12
Q

What are the 9 dental anomalies in shape?

A
  1. Gemination
  2. Fusion
  3. Concrescence
  4. Taurodontism
  5. Hutchinson’s Teeth
  6. Talon’s Cusp
  7. Dens In Dente
  8. Dens Evaginatus
  9. Dilaceration
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13
Q

Also known as twinning and is an anomaly that arises when a tooth attempts to divide itself or partially twin itself, by splitting its tooth germ

A

Gemination

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14
Q

Usually one with two completely or incompletely separated crowns that have a single root or root canal

A

Gemination

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15
Q

Occurs when two adjacent tooth germs unite and are joined by their crowns or their roots

A

Fusion

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16
Q

Fusion which occurs after root formation has been completed, whereby teeth are united by cementum only

A

Concrescence

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17
Q

What are the 2 causes of concrescence?

A

a. Traumatic injury
b. Crowding of the teeth with the resorption of the interdental bone

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18
Q

Resembles an eagle’s talon and commonly affects maxillary and mandibular permanent incisors

A

Talon’s Cusp

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19
Q

Appearance of Talon’s Cusp

A

a. Cusp blend smoothly with the tooth except that there is a deep developmental groove where the cusp blends with the sloping lingual tooth surface
b. Composed of normal enamel and dentin and a horn of pulp tissue

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20
Q

3 problems of Talon’s Cusp

A
  1. Esthetics
  2. Caries control
  3. Occlusal accommodation
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21
Q

What are the 2 other names for dens in dente?

A

Dens Invaginatus and Dilated Composite Odontome

22
Q

The tooth commonly affected in this anomaly is the maxillary permanent lateral incisors

A

Dens In Dente

23
Q

What are the 3 causes of invagination?

A
  1. Increased localized external pressure
  2. Focal growth retardation
  3. Focal growth stimulation in certain area of the tooth bud
24
Q

What is the radiographic appearance of dens in dente?

A

Pear-shaped invagination of enamel and dentin

25
Q

4 other names for dens evaginatus

A
  1. Occlusal Tuberculated Premolar
  2. Leong’s Premolar
  3. Evaginated Odontome
  4. Occlusal Enamel Pearl
26
Q

Clinical appearance of dens evaginatus

A

Accessory cusp or globule of enamel on the occlusal surface between the buccal and lingual cusps of premolars; may be unilateral or bilateral

27
Q

3 clinical significance of dens evaginatus

A
  1. May contribute to incomplete eruption of the teeth
  2. May contribute to displacement of the teeth
  3. May contribute to pulp exposure with subsequent infection following occlusal wear or fracture
28
Q

Bull-like tooth wherein there is enlargement of the body of the tooth at the expense of the root

A

Taurodontism

29
Q

Clinical appearance of taurodontism

A

a. Seen both in either the deciduous or permanent teeth, but more common to permanent teeth
b. May be unilateral or bilateral

30
Q

4 radiographic features of taurodontism

A
  1. Rectangular in shape
  2. Pulp chamber is extremely large with a much greater apico-occlusal height than normal
  3. Pulp lacks constriction at the cervical of the tooth
  4. Roots extremely short with bifurcation or trifurcation only a few millimeters above the apices of the roots
31
Q

An angulation of the root or crown of formed tooth

A

Dilaceration

32
Q

Cause of dilaceration

A

Trauma

33
Q

Common locations of dilaceration

A
  1. Cervical portion
  2. Middle third of the root
  3. Apical third of the root
34
Q

Clinical consideration of dilaceration

A

Difficulty in extraction

35
Q

This is a congenital anomaly that is associated with syphilis and there is notching at incisal edge and narrowing of incisors

A

Hutchinson’s Teeth

36
Q

4 anomalies of the roots of the tooth

A
  1. Short root
  2. Long root
  3. Enamel pearl
  4. Supernumerary root
37
Q

What are the 2 dental anomalies in number?

A
  1. Anodontia
  2. Supernumerary teeth
38
Q

All teeth are missing and may involve both deciduous or permanent dentition

A

Total Anodontia

39
Q

A common congenital condition characterized by absence of one or more teeth

A

Partial Anodontia or Hypodontia

40
Q

Absence of many teeth, usually associated with small size of the existing teeth and other anomalies

A

Oligodontia

41
Q

Occurs as a result of extraction of all teeth, clinically absent teeth

A

Induced or False Anodontia

42
Q

Teeth are missing clinically but are formed but failed to erupt in the oral cavity

A

Pseudoanodontia

43
Q

Teeth in excess of the normal number

A

Supernumerary teeth

44
Q

Possible causes of supernumerary teeth:

A

a. Developed from a third tooth bud but arising from the dental lamina near the permanent tooth bud
b. Splitting of permanent tooth bud
c. Hereditary

45
Q

A tooth situated between the maxillary central incisors and appears or occurs singly, paired erupted or impacted, occasionally inverted

A

Mesiodens

46
Q

Small tooth with a cone shaped crown and a short root

A

Mesiodens

47
Q

A supernumerary molar usually small and situated buccally or lingually to one of the maxillary molars, or interproximal between the 1st, 2nd, 3rd molars

A

Paramolar

48
Q

Supernumerary teeth that erupt outside the dental arch

A

Peridentes

49
Q

Teeth which erupt within the first 30 days after birth

A

Neonatal Teeth

50
Q

More common than neonatal teeth and erupts at birth that commonly affects the mandibular central incisor

A

Natal teeth

51
Q
A

Oral Pathology (4 decks)

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