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Hygiene Sem 1 > Orofacial W10 Anomolies > Flashcards

Orofacial W10 Anomolies Flashcards

1
Q

Anomaly

A

Noticeable different

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2
Q

Dental anomaly

A

Deviations of dental tissue origin derived from enamel cementum or dentin

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3
Q

Dental anomalies can be caused by

A

A multitude of things or by just one small variation in the environment

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4
Q

Intrinsic factor

A

Meaning internal
Ex hereditary, metabolic dysfunction or mutations

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5
Q

Extrinsic factor

A

Meaning external, causes originating outside the body
Ex. Physical/chemical trauma, biologic agent, nutritional deficiency, stress, habits, environmental conditions

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6
Q

If a condition occurs due to genetic makeup it is termed

A

Hereditary

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7
Q

Congenital condition occurs at or before

A

Birth

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8
Q

Developmental anomaly condition results during the

A

Formation and development of teeth

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9
Q

2 classification of dental anomalies

A

Variation in size of teeth
Variation in number of teeth

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10
Q

Macrodontia

A

Teeth are too large

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11
Q

Microdontia

A

Teeth are too small

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12
Q

Hyperdontia

A

Multiple or extra teeth
(Supernumerary)

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13
Q

Anodontia

A

Too few teeth

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14
Q

The most common malformed tooth is the ?
Shape of it?

A

Maxillary lateral incisor
Peg shaped

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15
Q

Supernumerary teeth are most commonly located in where in the maxillae and where in mandible

A

Midline and molar regions (maxillae)
Premolar region (mandible)

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16
Q

Maxillary supernumerary teeth outnumber mandibular

A

9 to 1

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17
Q

Most common missing permanent teeth

A

Maxillary 3rd molars
Maxillary lateral incisors

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18
Q

The least likely permanent teeth to be missing is

A

The canines

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19
Q

Mesiodens refers to

A

Supernumerary teeth in midline of maxillae
(Peg shaped)

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20
Q

Fourth molars are termed ?
Located where

A

Distomolars
Distal to 3rd molar

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21
Q

Supernumerary tooth that is situated buccal or lingual into a molar is called

A

Paramolar

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22
Q

If a supernumerary resembles a regular tooth it is termed

A

Supplemental

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23
Q

Cone shaped supernumerary called

A

Conical

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24
Q

If supernumerary is very small it is called

A

Tubercle

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25
Q

Are supernumerary teeth more common in the permanent dentition or primary dentition

A

Permanent

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26
Q

Odontoma is a

A

Tumerous anomaly of calcified dental tissue

27
Q

2 types of odontoma

A

Complex
Compound

28
Q

Complex odontoma refers to a single mass of

A

Dentin, cementum and enamel in a large blob or unspecified shaoe

29
Q

Compound odontoma refers to several

A

Small masses that resemble small rudimentary teeth

30
Q

Dens in dente

A

Tooth within a tooth

31
Q

Most affected teeth in regard to dens en dente

A

Perm maxillary lateral incisors (12&22)

32
Q

A severe bend or distortion in the tooth root and crown of more than 40° is termed

A

Dilaceration

33
Q

A sharp curvature or twist of a tooth ROOT only is called

A

Flexion

34
Q

Dwarfed roots

A

teeth have extremely short roots in comparison of size of the crowns

35
Q

Germination is a

A

Developmental anomaly; when a tooth attempts to divide itself or partially twist itself by splitting its tooth germ

36
Q

Germination could result in twin teeth but in most cases germinated teeth are only

A

Partially split

37
Q

Germinated teeth typically have a single root and a common

A

Pulp canal

38
Q

A tooth split into 2 crowns with 2 root would be termed

A

Bifid tooth or bifurcated crown

39
Q

Form of germination called twinning occurs when

A

A single tooth germ splits, forming two nearly identical teeth but remaining fused as one

40
Q

Twinning is most commonly seen in the anterior area and more often in what dentition

A

Promary

41
Q

Fusion occurs when 2

A

Adjacent tooth germs jnite

42
Q

The fusion of teeth must be made at the

A

Dentin

43
Q

If the teeth are only connected by their cementum it is not fusion but ?

A

Concrescence occurred

44
Q

Concresence are originally separate teeth that fuse by their cementum and occurs as a result of

A

Trauma

45
Q

Hypercementosis

A

Deposition of excessive amounts of secondary cementum

46
Q

Hypercementosis usually occurs at the

A

Apex of a tooth

47
Q

Cementoma

A

Form of hypercementosis that is also associated with localized destruction of bone

48
Q

Enamel pearls are what? Where are they found ?

A

Small masses of excess enamel (misplaced group of ameloblasts)
Found at bifurcation or trifucation

49
Q

Hutchinsons incisors

A

Notched incisors sometimes called screwdriver shape
Formed as a result of prenatal syphilis

50
Q

2 types of enamel dysplasia

A

Enamel hypoplasia
Enamel hypocalcification

51
Q

What causes enamel hypoplasia

A

Any condition that inhibits enamel formation (fever, inflammation, systemic disease)
Results in small pits or grooves in crowns

52
Q

Enamel hypocalcification caused by a condition

A

That inhibits the calcification of enamel

53
Q

Most common form of enamel hypocalcification

A

Enamel fluorosis

54
Q

Enamel fluorosis is caused by

A

Excessive fluoride in the tooth structure

55
Q

Enamel fluorosis can range from small white flecks to large

A

Opaque areas to brownish spots

56
Q

Mottled enamel

A

Brownish in colour
Severe cases of enamel fluorosis

57
Q

Amelogenesis imperfecta

A

When enamel is present, it’s thin, and stained with various shades of yellow and brown

58
Q

Hypocalcification of a single tooth, usually maxillary incisor

A

Turners tooth

59
Q

Turners tooth occurs if a developing permanent tooth is affected by a

A

Local infection or trauma

60
Q

Dentinogenisis imperfecta presents as

A

Dentin is gray brown or yellow and the tooth has a translucent hue

61
Q

The most striking feature of dentinogenesis imperfecta is that

A

Pulp chamber and root canal are completely filled with dentin

62
Q

Tetracycline staining presents as

A

Tooth discolouration: yellow to brown or greyish blue

63
Q

If expectant mother or young child with developing crown takes tetracycline antibiotics then what occurs

A

Tetracycline staining

Hygiene Sem 1 (22 decks)

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