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Oral anatomy Lec > Quiz 1 > Flashcards

Quiz 1 Flashcards

1
Q

a field of anatomy dedicated to the study of human tooth structures.

A

Dental Anatomy

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2
Q

Teeth are named by their set, arch, class, type, and side.

A

Nomenclature

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3
Q

Teeth are named by their___,____,___,____, and___.

A

Set arch class type and side

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4
Q

Teeth can belong to one of two sets of teeth:

A

Permanent and primary/deciduous

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5
Q

There are___ primary (“baby”) teeth

A

20

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6
Q

Secondary (Adult) teeth
•____ to____ permanent teeth, the last four being third molars or “wisdom teeth”

A

28-32

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7
Q

o refers to those teeth of the permanent dentition that replace primary teeth (incisors, canines, and premolars of the permanent dentition)

A

Succedaneous tooth/teeth

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8
Q

Pertaining to those permanent teeth that are not preceded by a primary form (molars).

A

Non-succedaneous

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9
Q

Four classes of teeth

A

Incisors
› Canines
• Premolars
• Molars

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10
Q

(from Latin incidere,
“to cut”) are the first kindof tooth in human.
• function as cutting or shearing instruments for food.

A

Incisors

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11
Q

Also calle cuspids

A

Canine

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12
Q

Dog teeth, fangs, eye teeth, (in the case of those of the upper jaw)
• possess the longest roots of all teeth and are located at the corners of the dental arch. Ripping and tearing food.

A

Canine

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13
Q

• possess the longest roots of all teeth and are located at the corners of the dental arch. Ripping and tearing food.

A

Canine

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14
Q

The FDI

A

The FDI (Federation Dentaire Internationale)

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15
Q

The FDI World Dental Federation developed in_____ a system to identify teeth with a number.
• The FDI Two-Digit Notation is widely recognized and used worldwide.

A

1971

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16
Q

This system is called the FDI_______, also known as the_____ notation.

A

Two-Digit Notation

150-3950

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17
Q

Permanent FDI 1.1 is?

A

Central incisor

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18
Q

Permanent FDI 1.2 is?

A

Lateral incisor

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19
Q

Permanent FDI 1.3 is?

A

Canine

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20
Q

Permanent FDI 1.4 is?

A

First premolar

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21
Q

Permanent FDI 1.5 is?

A

Second premolar

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22
Q

Permanent FDI 1.6 is?

A

First molar

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23
Q

Permanent FDI 1.7 is?

A

2 molar

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24
Q

Permanent FDI 1.8 is?

A

3rd molar

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25
Q

Permanent

Upper right =
• Upper left =
• Lower left =
• Lower right =

A

1 2 3 4

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26
Q

FDI

For deciduous teeth, the system varies slightly. All child’s quadrants are numbered from __to___following the same starting point and rotation of the permanent numbering.

A

5-8

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27
Q

is a simplified method of identifying teeth that is approved and adopted by the American Dental Association.
• The uppercase letters A through T are used for primary teeth and the numbers 1 - 32 are used for permanent teeth.
• The Permanent Maxillary teeth are numbered from 1-16.
Then Permanent Mandibular teeth are numbered 17-32
• The Primary maxillary teeth are lettered from A-J. Then Primary Mandibular teeth are lettered K-T

A

Universal numbering system

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28
Q

” Surface of the anterior tooth facing toward the lip

A

Labial surface

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29
Q

• Surface of posterior tooth facing toward the cheek

A

Buccal surface

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30
Q

• This is the surface of a tooth that is closest or next to your tongue.
On your upper teeth, this is called the palatal surface. On your lower teeth, it’s called the lingual surface.

A

Lingual / Palatal surface

Palatal

Lingual

31
Q

• Surface of the teeth facing toward the surface of the adiacent teeth

A

Proximal Surface

32
Q

• Surface of the tooth which is toward the median line

A

Mesial Surface

33
Q

• Surface of the tooth which is away the median line

A

Distal Surface

34
Q

Surface of the anterior tooth which is use for cutting or tearing food

A

Incisal surface

35
Q

Surface of the posterior tooth which is used for grinding food and the surface of a tooth which occludes with the opposing tooth.

A

Occlusal

36
Q

It is any linear elevation on the surface of the crown of the tooth and is named according to its location.

A

Ridge

37
Q

” A linear, rounded border of enamel that forms the mesial and distal margins of anterior teeth as viewed from the lingual, and the mesial and distal borders of occlusal surfaces on posterior teeth.

A

a.Marginal ridges

38
Q

It is a linear elevation which descends from the tip of the cusp to the central part of the occlusal.
• The slope of each side of the ridge resemble 2 sides of a triangle.

A

Triangular ridge

39
Q

• The only tooth on which an oblique ridge is found is the_____ molar.
• Consists of an elevated prominence on the occlusal surfa ce andextends
obliquely from the tips of the mesiolingual cusp to the distobuccal cusp

A

Oblique ridge
Maxillary

40
Q

The ridge of enamel that extends from the cingulum to the cusp tip on the lingual surface of most cuspids.

A

Lingual ridge

41
Q

Each cusp has____ cusp ridges radiating from its tip.
• They are named according to the direction they take away from the cusp tip (for example, mesial, distal, buccal, or lingual)

A

Cusp ridge

42
Q

The union of a buccal and lingual triangular ridge that crosses the surface of a posterior tooth transversely (roughly 90° to both the buccal and lingual tooth surfaces)

A

Transverse ridge

43
Q

A pointed or rounded elevation of enamel found on cuspids and on the chewing surfaces of bicuspids and molars

A

Cusp

44
Q

Found on the lingual aspect of an anterior tooth.
› It is a convex mount of enamel localized to the cervical one-third of the crown

A

Cingulum

45
Q

“It is a small pinpoint depression found at the junction or terminals of the developmental grooves and named according to its location

A

Pit

46
Q

• A rounded or angular depression of varying size found on the surface of a tooth

A

Fossa

47
Q

Centrally located depression found onthe occlusal surface of molars and mandibular second bicuspids.

A

Central fossa

48
Q

Irregular, shallow depression found on the lingual surfaces of an incisor or cuspid.

A

Lingual fossa

49
Q

Located adjacent to the marginal ridges on the occlusal surfaces of posterior teeth.
› Two types of triangular fossae are mesial and distal

A

Triangular fossa

50
Q

A small linear depression on the surface of a tooth

A

Groove

51
Q

• Fissure between the cusps on the crown of the tooth.

A

Developmental groove

52
Q

A minor, auxiliary groove that branches off from a much more pro minent developmental groove.
• They do not represent the junction of primary tooth parts and gives the occlusal surface a wrinkled appearance

A

Supplemental groove

53
Q

Is one of the primary divisions of a crown;
all teeth develop from four or five lobes.
• are usually separated by readil y identifiable devel opmental grooves

A

Lobe

54
Q

Are small, rounded projections of enamel from the incisal edges of newly erupted anterior teeth.
•The projections wear away soon after eruption

A

Mamelons

55
Q

is the portion of the tooth covered by enamel.

A

Crown

56
Q

›
is the lower two thirds of a tooth covered by cementum

A

Root

57
Q

The crown and root portion is covered by cementoenamel
junction also known as.

A

Cervical line

58
Q

Four tooth Tissues
›

A

Enamel
Teeth
“ Cementum
› Dentin
• Pulp

59
Q

The crown and root portion is covered by cementoenamel
junction also known as

A

cervical line.

60
Q

• is the hardest and most highly mineralized substance of the body.
• It is the normally visible dental tissue of a tooth because it covers the anatomical crown and must be supported by underlying dentin

A

Enamel

61
Q

is the substance between enamel or cementum and the pulp chamber
• The bulk of a tooth
• Because it is softer than enamel, it decays more rapidly and is subject to severe cavities if not properly treated, but dentin still acts as a protective layer and supports the crown of the tooth.

A

Dentin

62
Q

is a specialized bone like substance covering the root of a tooth.
• The principal role of cementum is to serve as a medium by which the periodontal ligaments can attach to the tooth for stability

A

Cementum

63
Q

is the central part of the tooth filled with soft connective tissue.
› This tissue contains blood vessels and nerves that enter the tooth from a hole at the apex of the root.
›

A

Pulp

64
Q

The pulp is commonly called “_____of the tooth. Anterior teeth ordinarily have one root canal; mulciple canals occur in posterior teeth.

A

The nerve

65
Q

The ____ ____ of a tooth is an imaginary line that goes through the crown and root around which the substance of a tooth is most symmetrically distributed.

A

Long axis

66
Q

Anv surface of a tooth that is parallel to the long axis is called an____ surface (for example, mesial, distal, tacial, or lingual surtaces).

A

Axial

67
Q

Divided into cervical third, middle third, and apical third

A

Root

68
Q

Root is divided into:

A

Divided into cervical third, middle third, and apical third

69
Q

Divided into thirds in three directions: inciso-occlusocervically, mesiodistally, or labio- or buccolingually.

A

Crown

70
Q

Crown is divided into:

A

Divided into thirds in three directions: inciso-occlusocervically, mesiodistally, or labio- or buccolingually.

71
Q

An angle formed by the junction of two crown surfaces. It derives its name from those surfaces.

A

Line angle

72
Q

There are___ line angles per tooth

A

Eight

73
Q

formed by the junction of three crown surfaces
• the name of the point angle is derived by combining the names of the three surfaces.

A

Point angle

Oral anatomy Lec (2 decks)

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