Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Oral Anatomy > Lecture 2 > Flashcards

Lecture 2 Flashcards

1
Q

Crown division arch to back:

A

Mesial, medial, distal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Crown division top to bottom

A

Occlusal/incisal, middle, cervical

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Crown division proximal view (side view)

A

Facial, medial, lingual – still occlusal/incisal, middle, cervical

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Crown division

A

Broken in 3rds.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Order of terms in description

A
  1. mesial
  2. distal
  3. facial/labial/buccal
  4. lingual
  5. occlusal/incisal
  6. Cervical/apical
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Surface junctions

A

Two surfaces that join (line angle) - distolabial is an example.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

3 surface point angle example

A

mesiofacio-occlusal point angle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Point angle

A

3 surfaces meet.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Dimension

A

Distance between two opposite walls (mesiodistal dimension is example).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Root to crown ratio

A

Ratio changes in life, many times clinically the root becomes exposed. Smaller ratio (closer to 1) denotes near equal crown and root length. Larger is opposite.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Linear depressions

A

Not rounded - the grooves. Not present on anterior, but present on occlusal surface of posterior teeth.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Central groove

A

Middle between buccal and lingual cusps, run mesiodistally.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Marginal ridge grove

A

M (see slide)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Fossa developmental grooves

A

Extend toward line angles (distobuccal fossa group). Separate lobes.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Supplemental grooves

A

Smaller grooves (marginal ridge, extra, etc). Can surround triangle. Not marking junction of important areas.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Other grooves:

A

buccal grooves on molar, lingual grooves on molar. Separate lingual and buccal cusps respectively.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Fossae

A

Shallow bowl-like depressions. On lingual surface of anterior teeth, occlusal of posterior teeth.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Pit and fissure

A

Decay starts in grooves and spreads more quickly once in dentin. Deepest part of groove - enamel can sometimes not fuse completely, exposing dentin. This is a fissure. Pit is the same but with fossa.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Fissure

A

Exposure of dentin due to lack of fusing on groove.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Tooth with tendency for pits

A

Maxillary lateral (sometimes central) incisors. Have deep fossa.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Cingulum

A

Bump at cervical lingual portion of tooth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Apex

A

root tip

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Furcal area

A

Area between split roots - triangular, other end for sulcus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Root trunk

A

Before any split.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Furcation

A

Area of root where it splits. If 2 - bifurcation. If 3 - trifurcation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

CEJ on proximal curves towards

A

Incisal/occlusal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

CEJ on facial curves towards

A

Apex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Mesial curves more than

A

Distal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

CEJ curvature diminish

A

from anterior to posterior. Deepest curvature (mesial surface of central incisor - up to 3.5 mm). For 3rd molar is between 1 and 0 mm.

30
Q

Root Axis Line

A

Imaginary line that splits the root in half (mesiodistally or faciolingually). Used as a reference for different landmarks. Ex. tip of cusp is facial to root axis line if viewed posteriorly.

31
Q

Height of contour/Crest of Curvature

A

Most prominent areas of tooth. If you bring the root axis line outward (parallel to original), the part of the tooth that still touches is this height of contour.

32
Q

Importance of height of contour

A

Clinical application: All facial and buccal surface height of contour is located on the cervical 1/3rd. Only one that is true for all teeth. Lingual HOC changes. On anterior it is in the cervical 1/3rd. Posterior is on middle 3rd. It is like this so that the HOC protects gingiva. Also, the bump deflects food away from gingival sulcus.

33
Q

If HOC is too large

A

Food debris will stay in gingival sulcus, causing inflammation.

34
Q

Embrasure Spaces

A

Triangular negative spaces that occur when two adjacent teeth touch. Cervical embrasure (or interproximal space), and Occlusal (or for incisors incisal) embrasure. From occlusal view, we get buccal/facial embrasure and lingual embrasure (usually larger than buccal).

35
Q

Tooth development

A

From lobes

36
Q

Anterior teeth lobes

A

3 lobes for facial, 1 lobe for lingual - total of 4. Mesial, middle, distal, lingual lobes.

37
Q

Premolar teeth lobes

A

Once called bicuspid, mandibular 2nd premolar occasionally have 3 cusps so this was changed. 3 facial lobes, one lingual cusp lobe. Same naming. Some premolars have two lingual cusps, and have 5 lobes (2 lingual).

38
Q

How many lobes form mandibular 2nd molar with 3 cusps

A

5 - 3 for facial cusp, 2 for each lingual cusps

39
Q

Molar lobes

A

1 lobe per cusp. Usually 4 or 5 lobes.

40
Q

Axial inclinations

A

Not straight angles for how teeth are set. Maxillary teeth: anteirors are mesially inclined, posterios not. Mandibular teeth are all mesially inclined. **Called long axis of the tooth (could be vertical, a little to the buccal, lingual, etc.). Do not confuse this with root axis line. Has to do with orientation of tooth in bone

41
Q

Axial inclinations - frontal view

A

Maxillary teeth tilt facially, mandibular teeth tilt lingually.

42
Q

Maxillary curve

A

Convex (smiley face)- anteroposterior curve of spee - canine to last molar curve.

43
Q

Mandibular curve

A

Concave (frown)

44
Q

Mediolateral curve (of wilson)

A

Mandibular (smile face) posterior view of molars, line from 3rd to 3rd concave. Maxillary is the exact opposite - convex.

45
Q

Interocclusal relationship

A

These curves allow for buccal cusp of mandibular teeth to fit in sulcus of maxillary, and the lingual cusp fits in sulcus of mandibular teeth. This helps chew.

46
Q

Occlusion

A

contact of the occlusal and incisal surfaces of maxillary and mandibular teeth (to close).

47
Q

Maximum intercuspation

A

Maximum amount of contact possible between maxillary and mandibular teeth.

48
Q

Interocclusal space

A

Little space between teeth when you go from maximum intercuspation and swallow. Approximately 3 mm. Dimension between tip of nose and chin when teeth are contacting (

49
Q

Vertical dimension in occlusion

A

Dimension between tip of nose and chin when teeth are contacting (~57 mm on average)

50
Q

Vertical dimension at rest

A

Dimension between tip of nose and chin when teeth are at rest (~60 mm on average).

51
Q

Class 1 occlusion (angle’s classes)

A

Mesiobuccal cusp of maxillary first molar fits into mesiobuccal groove of mandibular first molar. Maxillary canine will feed between mandibular canine and 1st molar. Maximal intercuspal position. Relationship of 2:1 interaction except for 24 and 25 (front teeth due to small diameter). Leads to overbite.

52
Q

Vertical overlap

A

Overbite

53
Q

Horizontal overlap

A

Overjet - Separation between lingual and facial surfaces of incisors

54
Q

Bridge

A

When making a bridge, you must use teeth w/higher root-crown ratio. 2/3 crown/root = optimal - 1/1 minumum

55
Q

Tallest tooth/Longest crown

A

canine or maxillary central incisor (second one)

56
Q

Longest tooth

A

maxillary canine

57
Q

Widest crown

A

mandibular first molar

58
Q

narrowest crown

A

mandibular central incisor

59
Q

Cusp

A

Entire pyramid - the tip is the cusp tip or apex. 4 ridges (medial, distal, facial, triangular ridge (cusp tip to middle of tooth))

60
Q

Cusps

A

Canines and posterior have between 1 and 5. Most are named after closest tooth surface/line angle

61
Q

Ridges

A

Cusp slopes or cusp arms. See slide Buccal ridge is an example.

62
Q

Mesial and Distal marginal ridges

A

Connect cusps in posterior teeth, on mesial+distal surface of tooth.

63
Q

Cingulum

A

Bump on linguocervical region

64
Q

Two triangular ridges join to form

A

One transverse/oblique ridge

65
Q

Review lab sheet 1

A

**

66
Q

Sulcus

A

Formed by transverse triangle ridge. This is a depression.

67
Q

Occlusal table

A

Most of chewing takes place here.

68
Q

Occlusal outline

A

Prominant points

69
Q

Mamelons

A

3 bumps - form on adult incisors from three labial lobes. Usually wear away.

70
Q

Perikymata

A

Very small horizontal wave-like ripples of enamel on newly erupted adult teeth.

Oral Anatomy (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions