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Dental Morphology > Mandibular Molars > Flashcards

Mandibular Molars Flashcards

(102 cards)

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1
Q

The mandibular molars are considered the:

A

Largest mandibular teeth

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2
Q

In the mandibular 1st molar there are generally ___ cusps, while in the mandibular 2nd molar there are generally ____ cusps.

A

5 cusps; 4 cusps

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3
Q

Mandibular molars are broader ____ than _____.

A

MD than BL

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4
Q

The mandibular molars are broader ______ while the maxillary molars are broader _____.

A

MD; FL

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5
Q

The mandibular 1st molar: How many cusps are there? Name them

A

5 cusps- 3 buccal 2 lingual

Mesiobuccal, distobuccal & distal (buccal)

Mesiolingual & distolingual (lingual)

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6
Q

The mandibular 1st molar How many roots are present? Name them

A

2 roots- mesial root & distal root

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7
Q

The 2 roots of the mandibular 1st molar are broad:

A

BL

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8
Q

The mesial root of the mandibular 1st molar curves ___ while the distal root is pointed in a ____ direction

A

Distally; distal direction

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9
Q

The mandibular 1st molar: Buccal Aspect:

Geometric outline:

A

Trapezoidal

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10
Q

The mandibular 1st molar: Buccal Aspect:

How many cusps are visible from this view?

A

All 5 cusps

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11
Q

The mandibular 1st molar: Buccal Aspect:

List the order biggest to smallest of the buccal cusps

A

MB> DB> distal cusp

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12
Q

The mandibular 1st molar: Buccal Aspect:

How many grooves can be seen from this aspect? Name them:

A

2 grooves- MB developmental groove & DB developmental groove

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13
Q

The mandibular 1st molar: Buccal Aspect:

The MB developmental groove is ___ compared to the DB developmental groove:

A

Shorter

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14
Q

The mandibular 1st molar: Buccal Aspect:

The MB developmental groove terminates in the:
The DB developmental groove terminates in the:

A

Middle 1/3 of tooth

cervical 1/3 of tooth

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15
Q

The mandibular 1st molar: Buccal Aspect:

The cervical line curves:

A

Apically

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16
Q

The mandibular 1st molar: Buccal Aspect:

The mesial height of contour:

A

Middle 1/3

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17
Q

The mandibular 1st molar: Buccal Aspect:

Describe the mesial outline:

A

Convex and concave

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18
Q

The mandibular 1st molar: Buccal Aspect:

Describe distal height of contour:

A

Middle 1/3 on distal aspect of distal cusp

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19
Q

The mandibular 1st molar: Buccal Aspect:

Describe the distal outline:

A

Convex and straight

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20
Q

What view of the mandibular 1st molar is this? Label the grooves

A

Buccal view

A: DB developmental groove
B: MB developmental groove

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21
Q

The mandibular 1st molar: Buccal Aspect: Roots

Name the 2 roots:

A

Mesial and distal

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22
Q

The mandibular 1st molar: Buccal Aspect: roots

The mesial root is ____ and curves ____ to a ______

A

Straight; distally; tapered apex

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23
Q

The mandibular 1st molar: Buccal Aspect: Roots

The distal root points ____ to a _____

A

Points distally to a more tapered apex

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24
Q

The mandibular 1st molar: Buccal Aspect:
The roots are ____ on the buccal than on the lingual

A

Wider MD

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25
The mandibular 1st molar: Buccal Aspect: Roots Are there developmental depressions on the roots? If so where at?
Developmental depressions on the mesial and distal aspects of each root
26
The mandibular 1st molar: Buccal Aspect: roots There developmental depression buccally on the:
Root trunk from CEJ to furcation
27
The mandibular 1st molar: Lingual Aspect: From this aspect how many cusps are visible? Name them
3 visible cusps; ML, DL, and Distal
28
The mandibular 1st molar: Lingual Aspect: Describe the sizes of the ML and DL cusps in relation to one another
ML is larger (wider and taller)
29
The mandibular 1st molar: Lingual Aspect: What anatomical feature can we see from this aspect?
Lingual developmental groove
30
The mandibular 1st molar: Lingual Aspect: Mesial and distal aspects of the crown are visible from the lingual aspect due to the:
Lingual convergence
31
The mandibular 1st molar: Lingual Aspect: How many roots can se see from this aspect?
2
32
The mandibular 1st molar: Lingual Aspect: The roots measure longer on the ____ than ___
Lingual than buccal
33
The mandibular 1st molar: Lingual Aspect: The bifurcation is in line with:
Lingual developmental groove
34
The mandibular 1st molar: Mesial aspect: What is the geometric outline:
Rhomboidal
35
The mandibular 1st molar: Mesial aspect: What cusps are visible from this aspect?
2 cusps- MB and ML
36
The mandibular 1st molar: Mesial aspect: How many roots are visible form this aspect?
1 root- mesial root
37
The mandibular 1st molar: Mesial aspect: Describe the buccal height of contour:
In cervical 1/3 (buccal cervical ridge)
38
The mandibular 1st molar: Mesial aspect: What is another name for the buccal height of contour (specific to this tooth)
Buccal cervical ridge
39
This blue dot shows what anatomical feature?
Buccal cervical ridge
40
The mandibular 1st molar: Mesial aspect: An interesting fact about this tooth is that:
The crown has a lingual tilt to the root axis
41
When a crown has a lingual tile to the root axis, this is characteristic of:
Mandibular molars and mandibular premolars
42
The mandibular 1st molar: Mesial aspect: The lingual height of contour is:
In middle 1/3
43
The mandibular 1st molar: Mesial aspect: The cervical line curves:
Occlusally
44
The mandibular 1st molar: Mesial aspect: The cervical line is higher ____ than ____
Lingually than buccally
45
The mandibular 1st molar: Mesial aspect: The root apex lies:
Under MB cusp
46
The mandibular 1st molar: Mesial aspect: What can be seen on the root?
A slight mesial developmental depression
47
The mandibular 1st molar: Distal aspect: Describe the visibility from this aspect compared to the mesial aspect:
More tooth is visible
48
The mandibular 1st molar: Distal aspect: What cusp is visible from this aspect?
DB cusp
49
The mandibular 1st molar: Distal aspect: How many roots are visible from this aspect
2
50
The mandibular 1st molar: Distal aspect: The distal marginal ridge is ___ & dips _____
Shorter and dips cervically
51
The mandibular 1st molar: Distal aspect: What groove is visible from this aspect?
DB developmental groove
52
The mandibular 1st molar: Distal aspect: From this aspect, the DB developmental groove is visible and end on ____ at the ____
Distal surface at the distobuccal line angle
53
What groove is seen and what aspect is this?
Distal aspect, DB developmental groove
54
The mandibular 1st molar: occlusal aspect: Geometric shape of this aspect?
Hexagonal
55
The mandibular 1st molar: occlusal aspect: From this aspect, the width of the crown is greater ____ than ____
MD than BL
56
The mandibular 1st molar: occlusal aspect: In MD terms, the crown is wider _____ and tapers ____
Mesially; distally
57
The mandibular 1st molar: occlusal aspect: In BL terms, the crown is wider _____ and tapers _____
Buccally; lingually
58
Label the sides of this image from the occlusal view of the mandibular 1st molar:
Left: mesial Right: distal Top: buccal Bottom: lingual
59
The mandibular 1st molar: occlusal aspect: Rank the cusps based on size from largest to smallest:
MB> ML >=DL>DB>D
60
The mandibular 1st molar: occlusal aspect: Aside from the occlusal surface, what other surface is mostly visible from this aspect?
Buccal surface
61
The mandibular 1st molar: occlusal aspect: How many major fossa are seen? What are the names?
1 major fossa, central fossil
62
The mandibular 1st molar: occlusal aspect: Describe the central fossa
Circular & centrally placed between cusp ridges
63
The mandibular 1st molar: occlusal aspect: How many minor fossa are present? Specify the names:
2 minor fossa: mesial triangular and distal triangular fossa
64
The mandibular 1st molar: occlusal aspect: List the developmental groove visible from this aspect:
Central developmental groove, mesiobuccal developmental groove, distobuccal developmental groove and lingual developmental groove
65
Label the grooves:
Yellow: MB developmental groove Orange: central developmental groove Red: DB developmental groove Brown: lingual developmental groove
66
The mandibular 1st molar: occlusal aspect: What are the boundaries of the central fossa: (6)
1. Distal slope of MB cusp 2. Mesial and distal slopes of DB cusps 3. Mesial slope of distal cusp 4. Distal slope of ML cusp 5. Mesial slope of DL cusp 5. Triangular ridges of the MB, D, DL and ML cusps
67
Grooves on the mandibular first molar: Buccal: Lingual: Mesial: Distal:
Buccal- DB and MB developmental grooves Lingual: Lingual developmental groove Mesial: none Distal: DB developmental groove
68
The mandibular 2nd molar compared to the mandibular first, the size of the mandibular second molar is:
smaller
69
The mandibular 2nd molar: How many cusps are present? Name them:
4 cusps: MB, ML, DB, DL (no 5th distal cusp)
70
What is the 5th additional cusp that is present on the mandibular 1st molar but not the second?
Distal cusp
71
The mandibular 2nd molar: How many roots? Name them:
2 roots: mesial and distal roots
72
The mandibular 2nd molar: buccal aspect: compared to the 1st mandibular molar this tooth appears:
Shorter and narrower
73
The mandibular 2nd molar: buccal aspect: How many cusps are visible?
All 4 cusps- ML, MB, DL, DB
74
The mandibular 2nd molar: buccal aspect: What separates the 2 buccal cusps?
Buccal developmental groove
75
The mandibular 2nd molar: buccal aspect: The buccal developmental groove separates what 2 cusps
MB and DB cusps
76
The mandibular 2nd molar: buccal aspect: The mesial and distal contacts:
Middle 1/3
77
The mandibular 2nd molar: buccal aspect: The cervical line points toward:
Bifurcation
78
The mandibular 2nd molar: buccal aspect: compared to the mandibular 1st molar, the roots are:
Shorter, closer and more parallel
79
The mandibular 2nd molar: buccal aspect: compared to the mandibular 1st molar, the roots are more:
More inclined distally
80
The mandibular 2nd molar: lingual aspect: the converges toward the lingual but:
Less than the mandibular 1st molar
81
The mandibular 2nd molar: mesial aspect: compared to the mandibular 1st molar the buccal curvature and buccal cervical ridge is:
Less pronounced
82
The mandibular 2nd molar: mesial aspect: compared to the mandibular 1st molar, the cervical line is:
Less curved
83
The mandibular 2nd molar: mesial aspect: compared to the mandibular 1st molar, the mesial root is:
More pointed at apex
84
The mandibular 2nd molar: distal aspect: what is absent in this tooth compared to the mandibular 1st molar?
Distal cusp
85
The mandibular 2nd molar: distal aspect: describe the distal contact:
Centered BL and the contact is in the middle 1/3 occlusocervically
86
The mandibular 2nd molar: occlusal aspect: what is the geometric outline?
Rectangular in shape
87
The mandibular 2nd molar: occlusal aspect- compared to the mandibular 1st, what cusp is more prominent?
DB cusp
88
The mandibular 2nd molar: occlusal aspect: compare the 4 cusps from this view:
Relatively equal in size
89
The mandibular 2nd molar: occlusal aspect What groove are present?
Central groove, lingual groove, buccal groove (no DB groove)
90
The mandibular 2nd molar: occlusal aspect- what shape do the occlusal grooves form?
Cross
91
The mandibular 2nd molar: occlusal aspect: the overall appearance of the occlusal surface is ____ due to ____
More wrinkly due to more supplemental grooves
92
The mandibular 1st molar developed from ____ lobes while the mandibular 2nd molar develops from _____ lobes
5; 4
93
Both the maxillary and mandibular 3rd molars are considered:
The most variable teeth in the mouth
94
The mandibular 3rd molars are usually similar to:
The other mandibular molars
95
Mandibular 3rd molars: list the anomalies often seen:
Oversized crowns
96
Maxillary 3rd molars: list the anomalies commonly seen:
Undersized crowns
97
Which molars are commonly impacted?
Mandibular 3rd
98
Mandibular 3rd molars: from the buccal view, how many cusps and how many roots are seen?
2 cusps; 2 roots
99
Mandibular 3rd molars: from the lingual aspect are:
Similar to 1st and 2nd mandibular molars
100
Mandibular 3rd molars: from a mesial view: the root is:
Shorter and more tapered
101
Mandibular 3rd molars: from a distal view:
Similar to mesial but narrower
102
Mandibular 3rd molars: from an occlusal view, compared to the other mandibular molars they look:
More rounded

Dental Morphology (11 decks)

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