Brainscape's Knowledge GenomeTM

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


See full index

Oral Anatomy FINAL > Primary Dentition > Flashcards

Primary Dentition Flashcards

1
Q

which tooth does the primary md 2nd molar resemble

A

permanent md 1st molar
more convex, rounded, convergence towards occlusal, larger buccal cervical ridge
M root longer/wider than D - same

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

the cingulum of the primary mx central is _____ compared to permanent mx central

A

highly developed

extending nearly to incisal ridge - further than permanent

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

which primary tooth varies in form from any other primary or permanent tooth

A

primary 1st molars

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

which is the largest of the primary anteriors

A

canine

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

which is the smallest primary molar in all dimensions (except BL):

A

primary mx 1st molar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

which cusp of the primary md 1st molar is distinctly longer, angular and sharper?

A

mesio lingual
forms greater part of occlusal table
unique feature to this tooth
usually longest

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

how does the CEJ differ in primary teeth vs permanent in relation to enamel thickness

A

enamel ends abuptly at cervical line rather than becoming thinner

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

major differences between primary mx central vs. permanent

A

no mamelons
MD dimension greater than IC
prominent cervical ridge

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

primary md molars have how many roots

A

2

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

General differentiating chracteristics of primary md centrals

A

symmetrical from facial, lingual, incisal

crown wide MDlly to IC when compared to permanent (not wider MD than IC)

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

neonatal lines

A

growth line formed at birth

permanent and primary

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

the enamel of primary teeth are _____ compared to permanent

A

thinner

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

primary teeth are generally smaller than permanent counterparts EXCEPT

A

mesiodistal dimension of permanent premolars

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

the pronounced cervical convexity on lingual and facial profiles of primary md centrals does what

A

adds strength to tooth

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

how many cusps does a primary md 1st molar have

A

4

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

primary teeth are _____ IC and _____ MD

A

short incisocervically

flat mesiodistally

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

list the fossae of the primary mx 1st molar from largest to smallest

A

central - angular and deep in unworn teeth
mesial - well defined
distal (if present) - shallow, poorly defined - only in 4 cusp variation

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

enamel of primary teeth appears more ____

A

opaque

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

which cusp takes up 2/3rds of the occlusal profile of primary mx 1st molars when viewed from buccal

A

mesiobuccal

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

the occlusal tables of primary molars are ____ than permanent

A

narrower

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

how many cusps does a primary mx 1st molar have

A

3
2 buccal
1 lingual

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

compared to permanent, the molar roots of the primary teeth are ____ and ____ relative to the crown height OC

A

long, slender

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

the enamel of primary teeth is _____ than permanent

A

thinner

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

how does the primary mx 2nd molar differ from the permanent mx 1st molar

A 
smaller
more angular
surfaces more convex
more occlusal convergence
larger buccal cervical ridge
smaller root trunk
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

primary teeth erupt more ______ than permanent

A

vertically

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

crown of primary teeth are _______ MD relative to their IC height when compared to permanent

A

wider

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

Why is the primary 2nd molar considered isomorphic?

A

can predict form of permanent mx 1st molar from the primary 2nd molar

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

the M and D profiles of the primary mx canine are ______ than primary mx central and lateral

A

more convex

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

how do the roots of the primary mx 2nd molar differ from the primary mx 1st molar

A

larger

more divergent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

all molars (primary and permanent) have a cervical third that is wider FL than middle third, but it is more pronounced on primary molars because:

A

greater taper of B and L towards occlusal

prominent B cervical ridge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

where is the primate space

A

mx in front of primary canine

md behind primary canine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

how many roots and pulp canals do the primary md 1st molar have

A

2 roots - 3 pulp canals

2 canals in mesial root

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

describe the occlusal profile of the primary mx 1st molar

A

scalloped
no definite cusp form
cusps not as prominent as permanent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

describe how the roots of the primary molars are shaped so as to allow for the eruption of permanent teeth

A

divergent roots

short root trunk

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

which tooth does the primary mx 2nd molar resemble

A

permanent mx 1st molar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

what are the 2 most constant features of the primary mx 1st molar

A

deep central pit

distinct buccal cervical ridge (stronger at mesial)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

the primary md 1st molar has lingual convergence ONLY on the _____

A

mesial

38
Q

what feature gives primary molars the appearance of a constricted occlusal table

A

buccal cervical bulge

39
Q

why is the distolingual cusp of the primary md 1st more rounded in comparison to the mesiolingual?

A

centric cusp

40
Q

the primary second molars of both arches have a form similar to…

A

permanent 1st molars

41
Q

primary crowns are shaped…

A

short, squat

42
Q

The root of the primary md central is ______x the length of the crown

A

2

43
Q

does the primary mx 1st molar have an oblique ridge?

A

yes

ML - DB cusp

44
Q

roots of primary teeth are completed by

A

3.25 years

45
Q

when viewed from the buccal, why does the crown of the primary mx 1st molar appear to be offset towards mesial

A

mesial longer than distal - mesial cervical line extends more into root

46
Q

how are the buccal cusps of the primary md 2nd molar different than the permanent md 1st molar

A

all buccal cusps about equal in size

47
Q

the contacts of the primary mx canine are

A

at same level

different than permanent

48
Q

from the incisal, the MD and FL dimension of the primary md central is

A

nearly equal

49
Q

there is no distinct demarcation of pulp cavity into pulp chamber and root canals in ____

A

incisors, canines

anteriors

50
Q

the primary mx 1st molar converges ______ and ______

A

lingually and distally

51
Q

when do primary teeth begin developing

A

6 weeks in utero

52
Q

List roots of primary mx 1st molar from longest to shortest

A

lingual
mesiobuccal
distobuccal

53
Q

resorption in primary teeth is ______, resorption in permanent teeth is ______

A

normal

pathological

54
Q

the cervical bulge of the F and L surface of the primary mx canine is ____ compared to the incisors

A

greater proportion

FL dimension greater (strong tooth)

55
Q

Which pulp horn of the primary mx 1st molar is near the occlusal surface

A

mesial

56
Q

crowns of primary teeth are completed within

A

1st year

57
Q

what causes the more exaggerated constriction at the cervical line of anterior primary teeth

A

lingual/buccal bulge at cervical (cervical ridge)

58
Q

incisal edge of primary md central is…

A

centered over crown and root

permanent - lingual to center

59
Q

primary teeth contact areas are more…

A

flat

broad

60
Q

the root trunk of primary molar roots is…

A

not distinguishable

61
Q

Importance of primary teeth

A 
mastication
space maintenance for permanent dentition (primate space)
stimulates jaw growth through fxn
phonetics
cosmetics
62
Q

what are the two most constant features of the primary md 1st molar

A

deep central pit

distinct buccal cervical ridge - extends into root on mesial

63
Q

the primary mx laterals resemble the primary mx centrals, except:

A

smaller in all dimensions
wider IC than MD
incisal angles more rounded
marginal ridges more prominent (deeper lingual fossa)
root longer and sharper relative to crown

64
Q

which cusp is the most prominent of the primary mx 1st molar

A

lingual (or mesiolingual if there are 4 cusps)

65
Q

how many cusps does a primary mx 2nd molar have

A

4, sometimes 5

66
Q

which tooth does the primary md 1st molar resemble

A

none

67
Q

describe the occlusal table of the primary mx 2nd molar

A

like permanent mx 1st molar
kinda rhomboidal
lingual and distal convergence
four well developed cusps, one supplemental (like cusp of carabelli, maybe)

68
Q

how does the primary 2nd molar differ from the primary 1st molar?

A

heaver

longer

69
Q

enamel of the primary teeth appears _____ in comparison to permanent

A

smoother

less evidence of developmental grooves and despressions

70
Q

the primary molar roots are _____ MD and _____ BL

A

narrow mesiodistally

very broad buccolingually

71
Q

the crown of the primary mx 1st molar does not resemble any primary or permanent tooth - what tooth does it look most like?

A

intermediate between premolar and molar

mx premolar

72
Q

primary teeth have ____ color

A

lighter

73
Q

the primary md canine has the same general form of the mx primary canine except…

A 
Main difference in dimensions
narrower MD - IC height noticeably different
cusp tip leans MESIALLY 
pointed sharp cusp
anatomy less pronounced
not as bulbous
narrower FL
shorter root
74
Q

which tooth have a root outline different than any other tooth? which root? how?

A 
mesial root of the primary md 1st molar
outline drops straight  to apical third
root end almost square
also:
- longer and wider than D root
- both proximal surfaces have concavities
75
Q

the primary md laterals are similar to primary md centrals, except:

A 
bigger in almost all dimensions (IC, MD)
not symmetrical from incisal
- incisal edge lingually placed
- cingulum distally placed
incisal slopes towards distal
- DI edges more rounded
- distal contact more apical
cingulum and marginal ridges more prominent (lingual fossa deeper)
Root has distal curvature, distal longitudinal groove
76
Q

describe the root trunk of the primary mx 1st molar

A

short
thick
deeply grooved M, D, B

77
Q

primary molars have a cervical bulge on which surfaces

A

buccal only

78
Q

cusp tip of primary mx canine offset to _____

A

distal

OPPOSITE OF PERMANENT

79
Q

crowns of primary molars have _____ buccal and lingual surfaces from O to cervical ridges

A

flatter

80
Q

the ______ ridge is prominent on the primary mx 1st molar

A

transverse ridge

MB - ML cusps

81
Q

the primary md 1st molar has a prominent _____ ridge

A

transverse

82
Q

primary mx molars have how many roots

A

3

83
Q

the marginal ridges and cingulum of the primary md central…

A

more developed than permanent

less developed than mx primary

84
Q

how does the incisal profile of the primary mx canine differ from the permanent?

A

cusp longer and sharper

M cusp ridge longer than D cusp ridge (OPPOSITE)

85
Q

pulp horns of primary teeth are ______, especially _____

A

long, sharp, prominent

especially on mesiobuccal

86
Q

crowns of primary teeth are ____ compared to permanent relative to total crown root length

A

short

87
Q

which of the buccal/lingual cusps of the primary mx 2nd molar is longer?

A

mesiobuccal

mesiolingual (largest)

88
Q

primary mx 1st molar - B and L surfaces _____ towards occlusal

A

converge

89
Q

primary teeth develop _____, permanent teeth develop ____

A

quickly

slowely

90
Q

Which is the only anterior tooth in which the MD crown dimension is greater than the IC dimension

A

primary mx central

maybe mx canine

91
Q

dentin of primary teeth vs. permanent is _____ except _____

A

thinner

occlusal of molars over central sulcus

92
Q

pulp cavities of primary teeth are _____ vs permanent

A

larger

Oral Anatomy FINAL (2 decks)

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