Brainscape's Knowledge GenomeTM

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


See full index

Molars > Mandibular Molars > Flashcards

Mandibular Molars Flashcards

1
Q

How many cusps and lobes do Mandibular 1st molars have ?

A

5 cusps , 5 lobes

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

How many cusps for the Mandibular 1st molars are visible from the Buccal ?

A

All 5 cusps ( Lingual cusps are taller and wider than the buccal cusps)

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

Which teeth have a lingual tilt?

A

Mandibular 1st molar, 2nd molar, and 2nd premolar

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

Mandibular 1st Molar cusp size order

A
  1. Mesiobuccal
  2. Distobuccal
  3. Distal
  4. Mesiolingual
  5. Distolingual
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Which pit usually need restoration on the mandibular 1st molar?

A

Buccal Pit

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

which cusps are visible from the lingual ?

A

Mesiolingual

Distolinngual

Distobuccal

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

For the Mandibular 1st Molar which side has a longer root trunk ?

A

Lingual

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

Anatomical Crown

A

area of tooth covered with enamel

(change due to attrition/trauma)

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

Clinical Crown

A

amount of tooth exposed occlusal to the gingiva

(change due to gingival level, eruption,wear)

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

Anatomical Root

A

Area of tooth covered with cementum

(change due to root reabsorption cementum desposition or root amputation)

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

Clinical root

A

Amount of tooth embedded in the alveolar bone

(change due to giningivial level or eruption)

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

Which two types of teeth are most likely to be wider mesiodistally in lingual half vs the buccal half?

(Taper from lingual to buccal)

A
  1. Mandibular 2nd premolar (3 cusp type)
  2. Maxillary 1st Molars
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Need to preserve transverse ridge on

A

Mandibular 1st Premolar

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

Need to preserve Oblique ridge on …

A

Maxillary 1st and Maxillary 2nd Molars

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

Due to missing teeth …

A

A person can close their mandible beyond what is normal.

this can lead to TMJ, muscle and joint pain

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

wher do the first year mandibular molars erupt? second ?

A

First molars-6 years

second molars- 12 years

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

All molars are wider ___________ than _________

A

wider Meisodistal than occlusocervical

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

Molars are the shortest teeth

A

occlusocerivical

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

All Molar crowns have a _____ to ____ taper

(_____ cusps are shorter than ____ cusps)

A

All molar crowns have a mesial to distal taper

Distal cusps are shorter than mesial cusps

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

All crowns have a buccal to lingual taper EXCEPT

A

Maxillary 1st molar with larger distolingual cusp

Mandiibular 2nd premolar molar with three cusps

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

Buccal Height of contour for molars

A

cervical (gingival) third

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

Lingual height of contour for molars are in

A

Middle third

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

_________ dimension is ________ than __________ dimension for Mandibular Molars

A

Mesiodistal Dimension is much wider than buccolingual dimension

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

Mandibular 1st Molars

Buccal Cusps:

Lingual Cusps:

A

Buccal cusps

  1. Mesiobuccal
  2. Distobuccal
  3. Distal

Lingual Cusps

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

Mandibular 2nd Molars

Buccal Cusps:

Lingual Cusps:

A

Buccal Cusps

  1. Mesiobuccal
  2. Distobuccal

Lingual Cusps

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

_______ are the shortest teeth occlusocervically

A

Mandibular molars are the shortest teeth occlusocervically

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

Mandibular Molars usually have _____ roots

A

Mandibular Molars usally 2 roots (Mesial and Distal)

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

teeth usually move mesially over time and continue to errupt over time so that they are constantly in contact

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

Max molar is wider____ than the _____

A

Max Molar is wider mesial than the distal

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

_______ wider in contact area than the ____ buccal contact

A

Lingual wider in contact area than Buccal contact

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

Clinical Note for Lingual tilt of crowns for mandibular molars

A
  • Hold Bur aligned with long axis of crown
  • Perpendicualr to occlusal surface
  • If you don’t you can reach the pulp horns
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

For the mandibular molar the ___ cusps are taller than the ____ cusps

A

Mesial cusps are taller than distal cusps

( only mesial cusps are visible from the mesial )

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

Which cusps for the mandibular first molars are visible from the Mesial?

A

Mesialbuccal and Mesialingual cusps

(Because Mesial cusps are taller than the distal cusps)

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

For the mandibular molars which roots are visible from the mesial?

A

Only the mesial root

(Because it it much larger than the distal root)

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

______ tilt of all mandibular crowns

A

lingual

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

How many roots can you see from the Distal for Mandibular Molar ?

A

Distal Root (More Narrow)

Mesial Root

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

Mand 1st molar is wider in the _____ half than the ___

(coverges toward the ____)

A

Mand 1st Molar is wider in the buccal half than the lingual half

(converges toward the lingual)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

Mandibular 1st molar cusp size from largest to smallest

A
  1. Mesiobuccal cusp
  2. Mesiolingual cusp= Distolingual cusp
  3. Distobuccal cusp
  4. Distal cusp
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

Devlopmental groove pattern for Mandibular 1st Molar

A

Y shape pattern

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

Mandibular 1st Molar

Each cusp has a definite__________, but note that none of them meet. So that means …….

A

triangular ridges

that means that the occlusal surface typically does not have transverse ridges.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

Mandibular 1st, 2nd Molars have ___ Fossa

(Names)

A

Mandibular 1st Molars have 3 Fossa

  • Central Fossa
  • Mesial Triangular Fossa
  • Distal Triangular Fossa

(densley fossa)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

Pulp canals

Mandibular 1st and 2nd Molars

A

Mesial - 2 roots

Distal - 1 roots (large)

( 2 roots)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

Mandibular 2nd Molars

Are narrower _______ and shorter _________ than that of a mandibular first molar

A

Are narrower mesiodistally and shorter occlusocervically than that of a mandibular first molar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

From the buccal view for the mandibular 2nd molars how many cusps are visible ?

A

all four cusps are visible

(because the lingual cusps are taller than buccal cusps)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

What cusp and groove is missing from the mandibular 2nd Molar ?

A

Distal cusp

Distobuccal Groove

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

What groove is on the Mand. 2nd on the buccal ?

A

Buccal groove

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
47
Q

Mandibular 2nd Molars roots

A

are closer together

roots are more distally inclined than in 1st Molar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
48
Q

Outline of the Mand. 1st Molar shape?

A

Hexagonal Outline

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
49
Q

Mand. 2nd Molars shape outline ?

A

Rectangular shape

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
50
Q

Manibular 2nd molar converage toward

A

the distal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
51
Q

Mand. 2nd molars are ____ than the Man 1st molars

A

Smaller than the Man 1st Molars

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
52
Q

Mandibular 2nd Molars Cusps

(sizes)

A
  1. Mesiobuccal
  2. Distobuccal
  3. Mesiolingual
  4. Distolingual

(all cusps are equal size)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
53
Q

Mandibular 2nd Molars grooves:

A

Central groove

Buccal

Lingual

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
54
Q

Developmental grooves form ____ shape on the mand 2nd molars

A

+ shape

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
55
Q

Mand. 2nd Molars has triangular ridges that …

A

meet to form two transverse ridges

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
56
Q

Mand 2nd Molar number of cusps and lobes

A

cusps: 4

Lobes: 4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
57
Q

Maxillary 1st Molar # cusps/lobes

Maxillary 2nd Molar # cusps/lobes

A

Maxillary 1st Molar: 4 or 5(Carabelli)

Maxillary 2nd Molar: 4 or 5(Carabelli)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
58
Q

Maxillary Molars are wider __________ than ___________

A

Faciolingual dimension than Mesiodistal dimension

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
59
Q

Which cusps gets progressively smaller on the second and third maxillary molars ?

A

Distolingual Cusp

60
Q

Maxillary Molars roots in their size ( greatest to smallest) ….

A

Lingual (Palatal) root

Mesiobuccal root

Distobuccal root

61
Q

Maxillary 1st Molars from the buccal, how many roots are visible?

A

All three roots:

Distobuccal Root

Mesiobuccal Root

Palatal Root

62
Q

what point do all three roots meet at from the buccal for the maxillary 1st molar?

A

Trifurcation

63
Q

Maxillary 1st molar roots

A

converge

inclined distally

64
Q

Which view can you see the trifurcation on the Max 1st Molar

A

Buccal only

(Lingual view, lingual root blocks it)

65
Q

Cusp of Carabelli is found where?

A

Maxillary 1st molar

On the Mesiolingual cusp

66
Q

From the Mesial view can you view the occlusal anatomy for the Maxillary 1st molar ?

A

No because the Mesial cusps are taller than the Distal cusp

67
Q

Which roots are visible from the mesial for the maxillary 1st molar ?

A

Mesiobuccal Root + Lingual Root

68
Q

Which roots are visible from the Distal for the Maxillary 1st Molar?

A

All three

  1. Lingual Root
  2. Mesiobuccal
  3. Distobuccal
69
Q

From the Distal view for the Maxillary 1st Molar is the occlusal surface visible ?

A

Slightly visible

70
Q

What shape does the Lingual root have ?

A

Banana shape

71
Q

Maxillary 1st Molar cusp order (large to small)?

A
  1. Mesiolingual
  2. Mesiobuccal
  3. Distobuccal
  4. Distolingual
  5. 5th cusp
72
Q

Maxillary 1st Molar shape ?

A

Rhomboidal Shape

73
Q

For the obtuse and acute angles that the Maxillary 1st Molars make, which cusps make which angles ?

A

O: Mesiolingual + Distobuccal cusps

A: Distolingual + Mesiobuccal cusps

74
Q

Which cusps make the Primary cusp triangle in the Maxillary 1st Molars?

A

Mesiolingual Cusp

Mesiobuccal Cusp

Distobuccal Cusp

(Pulp chamber is located right bellow)

75
Q

Which Molar has an Oblique Ridge ?

A

It’s on the Maxillary 1st and 2nd Molar

76
Q

What makes the oblique ridge ?

A

Triangular Ridge of the Distobuccal cusp

+

Distal Cusp ridge of the Distolingual Cusp

77
Q

How many fossa are on the Maxillary molars? Names?

A

4 Fossa

  1. Central Fossa
  2. Distal Fossa
  3. Mesial Triangular Fossa
  4. Distal Triangular Fossa
78
Q

How many grooves are there in the maxillary molars ?

A

7

79
Q

What groove seperates the triangular ridge and the distal cusp ridge on the maxillary molar?

A

Transverse groove of the oblique ridge

80
Q

What are the centric stops for Maxillary 1st Molars ?

A

Central Foss (Distobuccal Cusp of Mand 1st Molar)

Mesial Marginal Ridge (Mesiobuccal Cusp of Mand 1st Molar)

81
Q

what are the centric cusp (functional cusps) of the maxillary 1st Molar?

A

Distolingual Cusp

Mesiolingual Cusp

82
Q

Compared to the maxillary 1st molar, the maxillary 2nd molar is ?

A

shorter occlusocervically

Longer root trunk

83
Q

The point of trifurcation on the permanent maxillary first molar is situated closer to the cementoenamel junction than on the maxillary second molar.

A

True

84
Q

How many cusps do Max 2nd molars have?

A

4 (no cusp of caraebelli)

85
Q

what shape to do max 2nd molars have?

A

rhomboidal or heart shaped

(depending on the size of the distolingual cusp)

86
Q

what is the dip in the heart for the max 2nd molars?

A

Buccal Groove

87
Q

Maxillary 2nd Molar cusp size ( largest to smallest)

A
  1. Mesiolingual
  2. Mesiobuccal
  3. Distobuccal
  4. Distolingual
88
Q

which cusps for the Max 2nd molars make the primary cusp triangle?

A

Mesiolingual

Mesiobuccal

Distobuccal

89
Q

Maxillary 2nd Molar centric stops

A

Central Fossa (Distobuccal cusp of Mandibular 2nd Molar)

Mesial Marginal Ridge (Mesiobuccal Cusp Mandibular 2nd Molar)

90
Q

Maxillary 2nd molar centric cusps ( functional cusps)

A

Mesiolingual Cusp

Distolingual Cusp

91
Q

Which tooth is most likey never to form ?

A

Maxillary 3rd Molar

92
Q

Maxillary 1st and 2nd molar pulp

A

Mesiobuccal Root- two canals

Distobuccal Root- one canal

Lingual root- one canal

93
Q
A
94
Q

Max functional cusps

Mand functional cusps

A

Maxillary = Lingual Cusps

Mandibular = Buccal Cusps

95
Q

Where are centric cusps located?

A

Positioned approximately 1/3 into the total buccolingual dimension

Contact occurs on outer and inner inclines of the cusp

96
Q

Non centric Cusps

Maxillary

Mandibular

A

Maxillary= Buccal Cusps

Mandibular= Lingual Cusps

97
Q

Non- Centric Cusps

A

provides the mandible stability in occlusion

interlocks the fuctional cusps

98
Q

Non centric cusps are postioned

A

1/6 into the total buccolingual dimension

99
Q

Inner incline of non-centric cusp functional significance

A

contacts with or is close to a small portion of the outer aspect of the opposing centric cusp

100
Q

another name for non-centric cusps

A

guiding cusps

Outside occluding area (opposes embrasures)

101
Q

another name for centric cusps

A

supporting cusps

supporting forces of occlusion

(Contacts Cental Fossa, Marginal Riges )

102
Q

Normal occlusion

(Cusps)

A
  • Mandibular Buccal Cusps occlude in the Central Fossa and Marginal Ridges of Maxillary teeth
  • Maxillary Lingual Cusps occlude in the Central Fossa and Marginal Ridges of Mandibular teeth
103
Q

Occlusal contact occurs from the centric cust from contacting

A

Opposing central groove

central fossa

marginal ridge and embrasure

104
Q

lingual cusps of Mx premolars do not necessarily make contact marginal ridges but with

A

fossa of the opposing dentition

105
Q

•Each tooth opposes 2 teeth in the opposite arch, EXCEPT

A

Mandibular Central Incisors

Maxillary 3rd Molars

106
Q

Posterior Crossbite

A

Mandibular Lingual Cusp occlude in the Central Fossa of Maxillary Teeth

Maxillary Buccal Cusps occlude in the Central Fossa of Mandibular Teeth

107
Q

Class I Occlusion

A

Mesial buccal cusp of the Max 1st molar in the Buccal groove of the mand first molar

108
Q

Class II

A

The Mesial Buccal Cusp of Maxillary 1st molar is mesial to the buccal groove of the Mandibular 1st molar

109
Q

Class III

A

The Mesial Buccal cusp of the Maxillary 1st Molar positioned Distal to the Buccal groove of the Mandibular 1st molar

110
Q

What class is this?

A

Class I

111
Q

what class is this?

A

Class II

112
Q

What class is this ?

A

Class III

113
Q

What class is this ?

A

Class II

Division 1

Excess Overjet

114
Q

What class is this?

A

Class II

Division 2

Deep anterior bite with hooked or rabbited lateral incisors

115
Q

Maloclussions can be a result of

A

skeletal misalignment or dental misalignment or both

116
Q

Mx canine in

A

Labial embrasure btwn Md canine and 1st premolar

117
Q

D cusp of Md 1st molar occludes in the

A

Distal Fossa of the max 1st molar

118
Q

what is static occlusion?

A

how teeth contact when closing centric occlusion or centric relation

119
Q

Dynamic Occlusion

A

how teeth relate to each other as the jaw moves out of centric postion (eccentric movement)

120
Q

what is the red line?

A

curve of Monson

( 8 inch circle)

121
Q

what is the curve of spee?

A
122
Q

what is the curve of wilson?

A
123
Q

What is the occlusal curve?

A
124
Q

Eccentric Movements

A

Protrusive

Retrusive

Lateral Excursive

(movement away from max intercupation)

125
Q

We don’t want teeth to contact

A

non-functional cusps

126
Q

Canine Guidance

(cuspid rise)

A

Lateral Movements

  • prevent non-functional cusps from colliding
  • protects posterior teeth preveting fracturing of our cusps

(anterior teeth protect your posterior teeth posterior teeth protect your anterior teeth)

127
Q

Anterior Guidance

A

Protrusive Movements

  • Mechanoreceptors in anterior teeth (protection)
  • Cause discclusion of the posterior teeth
128
Q

Movement of the mandible to the right

right side=

left side=

A

right side= working side

left side= non-working/balancing side

129
Q

Movement of the mandible to the left

left side=

right side=

A

left side= working side

right side= non-working/balancing side

130
Q

as we move our jaw to the right….

the right side become the ____ side and the left side becomes the ___ nonworking side

A

working side condyle

left non working side condyle

131
Q

Working side condyle:

Non-working side condyle:

A

Working side condyle: Rotates in the fossa

Non- working side condyle: Translates out of fossa down the articular eminence and moves medially

132
Q

Side shift (Bennet Shift)

A

because our non-working side/ balancing side translates down the eminence and moves medially →side shift of both condyles

133
Q

Interferences in a protrusive movements

A
  • Distal inclines of Max lingual cusps against mesial inclines of mandibular fossae and marginal ridges
  • Mesial inclines of the Mand Buccal cusps againt distal inclines of Max fossae and marginal ridges

undesirable protrusive interferences

134
Q

Retrusive movement posterior contacts:

A

Mand. buccal cusps distal inclines with the mesial inclines of the max fossae and ridges

135
Q

Retrusive movements for condyles move

A

upward and backward in the retrusive movement

136
Q

eccentric movements take you out of

A

centric occlusion

137
Q

Favorable working side contacts in laterotrusive movements

A

Outer inclines of the max lingual cusps w/ inner inclines of mand lingual cusp

Buccal to Buccal

(need sufficent canine guidance)

138
Q

undesireable contact for the working side contacts

(lateral movements)

A

Outer incline of maxillary lingual to inner incline of mandibular lingual

(lingual to lingual)

139
Q

Non- working arrow

Protrusive

working

A

non-working - red and at an angle

protrusive- blue and straight

working- green straight perp. to protrusive

140
Q

which arrow is parallel to the oblique ridge?

A

non working movement

(red)

141
Q

working movement is toward ____side that the mandible moves

A

same side

142
Q

non working side is on the _____ side when compared to the movement of the mandible

A

opposite

143
Q

all non-working side contacts are ….

(what are they)

A

undesireable

(max lingual contacting mand buccal)

144
Q

if madible moves to the left, contact will be latertrusive while the right side will have

A

mediotrusive contacts

(identical but reversed)

145
Q

Durring lateral movement the only teeth that contact are

A

canines via canine guidance or cuspid rise

(all teeth separate)

146
Q

if there is no canine guidance then

A

develop excess wear, tmj, broken teeth cusps

147
Q

what is happening at the condyle

A

lateral movement→working condyle→rotates →nonworking side translates down and medially

Bennett Shift- Working condyle has a lateral shift because non working side is moving medially

Molars (1 decks)

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