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Morph. > Mandibular 1st Molars (Ye's Version) > Flashcards

Mandibular 1st Molars (Ye's Version) Flashcards

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1
Q

What tooth # and view?

A

Mandibular 1st molar; Buccal view

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2
Q

What tooth # and view?

A

Mandibular 1st molar; Lingual view

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3
Q

What tooth # and view?

A

Mandibular 1st molar; Mesial view

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4
Q

What tooth # and view?

A

Mandibular 1st molar; Distal view

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5
Q

What tooth # and view?

A

Mandibular 1st molar; Occlusal view

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6
Q

What tooth # and view?

A

Mandibular 1st molar; Buccal view

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7
Q

What tooth # and view?

A

Mandibular 1st molar; Lingual view

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8
Q

What tooth # and view?

A

Mandibular 1st molar; Mesial view

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9
Q

What tooth # and view?

A

Mandibular 1st molar; Distal view

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10
Q

What tooth # and view?

A

Mandibular 1st molar; Occlusal view

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11
Q

How many cusps does the mandibular 1st molar have? How many are buccal/lingual?

A

5 cusps: 3 buccal/2 lingual

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12
Q

What are the 3 buccal cusps on the mandibular 1st molar?

A

MB, DB, D

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13
Q

What are the 2 lingual cusps on the mandibular 1st molar?

A

ML, DL

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14
Q

Mandibular 1st molar:

How many roots?

A

2 roots

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15
Q

Mandibular 1st molar:

Roots are broad _____ (which direction)

A

B-L

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16
Q

Mandibular 1st molar:

Mesial root curves _______

A

Distally

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16
Q

Mandibular 1st molar:

Distal root pointed in a ______ direction

A

Distal

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17
Q

Mandibular 1st molar: Buccal aspect

Crown is _______ in shape

A

Trapezoidal

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18
Q

Mandibular 1st molar: Buccal aspect

How many cusps are visible? Which cusps are visible

A

All 5 cusps visible

MB > DB > D cusp

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19
Q

Mandibular 1st molar: Buccal aspect

How many grooves are present on this aspect? What are they?

A

2 grooves:
- MB developmental groove
- DB developmental groove

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20
Q

Mandibular 1st molar: Buccal aspect

The MB developmental groove is ______ (shorter/longer) than the DB developmental groove

A

Shorter

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21
Q

Mandibular 1st molar: Buccal aspect

Where does the MB developmental groove terminate?

A

Middle 1/3 of crown

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22
Q

Mandibular 1st molar: Buccal aspect

Developmental groove terminates in the _________

A

Cervical 1/3 of crown

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23
Q

Mandibular 1st molar: Buccal aspect

Cervical line curves ________

A

Apically

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24
Mandibular 1st molar: Buccal aspect Where is the mesial height of contour (HOC)?
Middle 1/3
25
Mandibular 1st molar: Buccal aspect Mesial outline is _______ and _______ (convex, concave, straight)
convex AND concave
26
Mandibular 1st molar: Buccal aspect Where is the distal height of contour (HOC)?
Middle 1/3 on distal aspect of distal cusp
27
Mandibular 1st molar: Buccal aspect Distal outline is ________ and ________ (convex, concave, straight)
Convex AND straight
28
Mandibular 1st molar: Buccal aspect (ROOTS) Does the mesial or distal have a more tapered apex?
Distal (both tapered but distal is more)
29
Mandibular 1st molar: Buccal aspect (ROOTS) Bifurcation is __mm apical to CEJ
3mm
30
Mandibular 1st molar: Buccal aspect (ROOTS) Roots are wider ____ on buccal than lingual
M-D
31
Mandibular 1st molar: Buccal aspect (ROOTS) _____________________ on the mesial and distal aspects of each root
Developmental depression
32
Mandibular 1st molar: Buccal aspect (ROOTS) Developmental depression ________ on root trunk from the CEJ to furcation
Buccally
33
Mandibular 1st molar: Lingual aspect How many cusps are visible?
3 cusps visible
34
Mandibular 1st molar: Lingual aspect What cusps are visible from this aspect?
ML, DL, & D
35
Mandibular 1st molar: Lingual aspect Which cusp is wider and taller?
ML > DL
36
Mandibular 1st molar: Lingual aspect Mesial and distal apsects of the crown visible due to ____________
Lingual convergence
37
Mandibular 1st molar: Lingual aspect 2 roots: measure longer on the ______ than the ______ (+1mm)
lingual; buccal
38
Mandibular 1st molar: Lingual aspect Bifurcation is __mm from CEJ
4mm
39
Mandibular 1st molar: Lingual aspect Bifurcation is in line with ___________
Lingual developmental groove
40
Mandibular 1st molar: Mesial aspect ___________ in outline form
Rhomboidal
41
Mandibular 1st molar: Mesial aspect How many cusps and roots visible?
2 cusps; 1 root
42
Mandibular 1st molar: Mesial aspect What cusps and root(s) are visible?
Visible: 2 cusps: MB, ML 1 root: (mesial)
43
Mandibular 1st molar: Mesial aspect Buccal height of contour (HOC) is in ____________
Cervical 1/3 of crown (buccal cervical ridge)
44
Mandibular 1st molar: Crown has a ________ tilt to the root axis. This is a characteristic of which teeth?
Lingual tilt; mandibular molars and premolars
45
Mandibular 1st molar: Mesial aspect Lingual height of contour in the _________
Middle 1/3
46
Mandibular 1st molar: Mesial aspect Cervical lines curve _________ - __mm
Occlusally - 1mm
47
Mandibular 1st molar: Mesial aspect Cervical line is higher ________ than ________ (lingually/buccally)
lingually; buccally
48
Mandibular 1st molar: Mesial aspect Root apex lies under the ___ cusp
MB
49
Mandibular 1st molar: Mesial aspect Slight mesial developmental depression on ______
Root
50
Mandibular 1st molar: Distal aspect More or less tooth visible? The distal is ________ and more ________ than the mesial.
More; shorter and more narrow than mesial
51
Mandibular 1st molar: Distal aspect What cusp(s) visible?
DB cusp
52
Mandibular 1st molar: Distal aspect How many roots are visible?
2 roots
53
Mandibular 1st molar: Distal aspect Distal marginal ridge is _______ and dips _________
Shorter; dips cervically
54
Mandibular 1st molar: Distal aspect Which landmark is located here?
DB developmental groove
55
Mandibular 1st molar: Distal aspect The DB developmental groove is visible from here. It ends on the ________ surface at the _______ line angle.
Distal DB
56
Mandibular 1st molar: Occlusal aspect ___________ in shape
Hexagonal
57
Mandibular 1st molar: Occlusal aspect MD with of the crown is ________ (greater/lesser) than BL (OPPOSITE OF MAXILLARY)
Greater
58
Mandibular 1st molar: Occlusal aspect Crown is wider _________ (tapers distally) Crown is wider _________ (tapers lingually)
Crown is wider MESIALLY (tapers distally) Crown is wider BUCCALLY (tapers lingually)
59
Mandibular 1st molar: Occlusal aspect Crown is wider mesially (tapers ________) Crown is wider buccally (tapers ________)
Crown is wider mesially (tapers DISTALLY) Crown is wider buccally (tapers LINGUALLY)
60
Mandibular 1st molar: Occlusal aspect MD width is (greater/lesser) than BL width?
Greater
61
Mandibular 1st molar: Occlusal aspect Order of cusps from largest to smallest
MB > ML >_ DL > DB > D
62
Mandibular 1st molar: Occlusal aspect Most of the _______ surface is visible from the occlusal aspect.
Buccal
63
Mandibular 1st molar: Occlusal aspect How many major and minor fossae?
1 Major fossa 2 Minor fossae
64
Mandibular 1st molar: Occlusal aspect What are the fossae?
1 Major: Central Fossa 2 minor: - Mesial triangular fossa - Distal triangular fossa
65
Mandibular 1st molar: Occlusal aspect What are the developmental groove names?
- Central dev. groove - MB dev. groove - DB dev. groove - Lingual dev. groove
66
Mandibular 1st molar: Occlusal aspect Know boundaries of central fossa:
- Distal slope of MB cusp - Mesial and distal slopes of DB cusp - Mesial slope of D cusp - Distal slope of ML cusp - Mesial slope of DL cusp - Triangular ridges of MB, D, DL and ML cusps

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