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DENTAL ANATOMY YEAH YEAH > Q4-ManMolars > Flashcards

Q4-ManMolars Flashcards

(47 cards)

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1
Q

Perm Man 1st Molar, Facial- What is the general outline of the MF cuspal ridges?

A

Almost a FLAT angle

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2
Q

Perm Man 1st Molar, Facial-What is the most pointed Facial cusp?

A

the Distal Cusp

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3
Q

Perm Man 1st Molar, Facial–The DF cusp has cuspal ridges that give rise to a more _______ cusp then the MF, but its still ______.

A

More POINTED then the MF cusp, but still ROUNDED

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4
Q

Perm Man 1st Molar, Facial-Why does the Distal cusp comprise a very small part of the total MD width of the facial surface?

A

MOST of the cusp is LINGUAL to the DF Line angle (so it is in the D aspect of the tooth)

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5
Q

Perm Man 1st Molar, Facial-Which facial groove is shorter?

A

MF groove is shorter than the DF groove

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6
Q

Perm Man 1st Molar, Facial-Where does the MF groove terminate? What does it end in?

A

Half way to the Cervical Line…Ends in a slight DEPRESSION

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7
Q

Perm Man 1st Molar, Facial-There is a _____ present at the terminus of the MF groove that commonly requires restoration that is termed a “____” or a “_____”.

A

pit….”facial pit” or “buccal pit”

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8
Q

Perm Man 1st Molar, Facial-The root trunk on the facial aspect measures ___mm on the average.

A

3.0mm

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9
Q

Perm Man 1st Molar, Facial-There is a deep depression that becomes more progressively shallow as it extends ______ from the ________ to the ________.

A

Occlusially from the BIFURCATION to the Cervical Line

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10
Q

Which surface of the Man 1st molar has a root depression? Does it cross the cervical line?

A

Perm Man 1st Molar–FACIAL…NO, it does not cross the cervical line.

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11
Q

Perm Man 1st Molar, Facial-The two roots are positioned ______ and _______.

A

Mesially and distally

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12
Q

Perm Man 1st Molar, Facial-The roots are usually _______ and more _______ than those of the mandibular 2nd and 3rd molar.

A

longer and more divergent(spaced further apart from each other)

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13
Q

Which surface of the Man 1st molar has a longer root trunk?

A

Lingual-4.0mm (Facial-3.0mm)

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14
Q

Perm Man 1st Molar, LINGUAL- When measured on the lingual the total root length is _______ (because the roots are measured form the ______ to the _____)

A

greater….Cervical line to the apex

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15
Q

Which surface of a man 1st molar has a a longer root length?

A

Lingual

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16
Q

Perm Man 1st Molar, Mesial: What is the mesial crown outline shape?

A

Rhomboidal

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17
Q

Perm Man 1st Molar, Mesial: The greatest curvature of the facial outline is at the ______ third of the crown. What is its name?

A

Cervical Third…Cervical Ridge

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18
Q

Perm Man 1st Molar, Mesial: When compared to maxillary molars, the cervical ridge crest is ______.

A

Higher Occlusially (but still in the cervical third)

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19
Q

Perm Man 1st Molar, Mesial: The angulation of the Triangular Ridge of the ML cusp is approx ___ degrees in relation to What Structure?

Study These Flashcards
A

30 degrees…the Mesial Marginal Ridge

20
Q

Perm Man 1st Molar, Mesial: Since the mesial cusps are _____ than the distal cusps on the tooth, very little of the ______ surface can be viewed.

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A

TALLER…occlusial

21
Q

Perm Man 1st Molar, DISTAL- The facial outline of the distal cusp is located _______ to the facial outline of the taller ___ cusp. This means the entire distal cusp is superimposed onto the ___ cusp.

Study These Flashcards
A

LINGUAL…DF cusp…DF cusp

22
Q

Perm Man 1st Molar, DISTAL- WHICH cusp EXCLUSIVELY comprises the distal contact area?

Study These Flashcards
A

THE DISTAL CUSP

23
Q

Perm Man 1st Molar, DISTAL- The distal contact area is slightly ______ to the FL bisector of the crown.

Study These Flashcards
A

slightly facial to the “center” of the crown.

24
Q

Perm Man 1st Molar, DISTAL-Both the distal and the DF cusp tips are _____ to the apices of the mesial AND distal roots.

25
Perm Man 1st Molar, Occlusial: What is the most FACIALLY placed cusp?
The DF cusp!
26
Perm Man 1st Molar, Occlusial: What is the most MESIALLY placed cusp?
The ML cusp!
27
Perm Man 1st Molar, Occlusial: RANK the cusp sizes from LARGEST to smallest. (bored: go smallest to largest)
Largest:MF---->ML----->DL---->DF---->D
28
Permanent SECOND molar, Facial: What divides the MF and DF cusps? What DISTINCT structure does it end in? WHICH THIRD is this distinct structure located?
The Facial (or buccal) Groove.....Ends in the Facial (buccal) Pit...the MIDDLE third of the crown
29
Permanent SECOND molar, Facial: The facial groove is ______, except for a slight ______ inclination at the facial pit.
VERTICAL....MESIAL
30
Permanent SECOND molar, Facial: OVERALL the facial groove is located slightly ______ to the vertical line dividing the crown in half(mesiodistally).
distal (this makes the MF cusp wider then the DF cusp)
31
Permanent SECOND molar, Mesial- The tip of the ___ cusp is closer to the "vertical faciolingual long axis bisector" (center of the crown) than the greatest ______ outline of the crown.
MF cusp.....greatest facial outline (aka-its TILTED in)
32
Permanent SECOND molar, occlusial: The tips of both facial cusps, ESPECIALLY the MF cusp, are located farther _______ from the facial outline of the crown when compared to the Lingual cusps in relation to the Lingual outline.
LINGUALLY (aka-the facial cusp tips are farther away from the facial outline and the lingual cusp tips are closer to the lingual outline)
33
Permanent SECOND molar, occlusial: The facial groove and the lingual groove meet the central groove at ______ angles.
Right angles
34
Permanent SECOND molar, occlusial: What divides the occlusion surface into M and D halves?
the F and L grooves
35
Permanent SECOND molar, occlusial: The three major grooves meet to form a "____" or "_____" design.
"plus" or cross"
36
Permanent SECOND molar, occlusial: Since the three major grooves divide the cusps into approximately equal sizes, it is called a "___" arrangement.
"4+"
37
Permanent SECOND molar, occlusial: The _______ pit forms where the facial, lingual, and central grooves meet.
Central Pit
38
Permanent SECOND molar, occlusial: The central pit is located on the ______ half of the crown.
LINGUAL
39
Permanent SECOND molar, occlusial: What anatomical structures are at the ends of the central groove?
Mesial Triangular Fossa and Distal Triangular Fossa
40
Permanent SECOND molar, occlusial: What anatomical structure is found at both the mesial triangular fossa and the distal triangular fossa?
the mesial triangular PIT and the distal triangular PIT
41
Permanent SECOND molar, occlusial: Each cusp has M and D ______ ridges extending laterally, as well as a ______ ridge that extends toward the central _____.
cuspal ridges....triangular ridge...central fossa
42
Permanent SECOND molar, occlusial: On MOST specimens the triangular ridges meet to form two _______ ridges.
2 transverse ridges
43
Perm Man 3rd Molar, Facial- the 2 facial cusp variety of the facial groove ends in a ______.
Facial Pit
44
Perm Man 3rd Molar, Facial- The facial pit is in the ______ third.
Middle third.
45
Perm Man 3rd Molar, Facial- What structure exhibits decay because it is difficult for the Pt to clean in this area of the mouth?
The Facial Pit!
46
Perm Man 3rd Molar, Mesial: The central groove is positioned ______ to the FL long axis bisector(middle of tooth from mesial view).
LINGUAL (like ALL mandibular molars!)
47
Perm Man 3rd Molar, Occlusial: The crown is wider ______ than it is ____.
wider MD then FL (so "pinch" facial-lingually)

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