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DENTAL ANATOMY YEAH YEAH > Q4-ManMolars > Flashcards

Q4-ManMolars Flashcards

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?

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.

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.

A

LINGUAL…DF cusp…DF cusp

22
Q

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

A

THE DISTAL CUSP

23
Q

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

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.

A

FACIAL

25
Q

Perm Man 1st Molar, Occlusial: What is the most FACIALLY placed cusp?

A

The DF cusp!

26
Q

Perm Man 1st Molar, Occlusial: What is the most MESIALLY placed cusp?

A

The ML cusp!

27
Q

Perm Man 1st Molar, Occlusial: RANK the cusp sizes from LARGEST to smallest. (bored: go smallest to largest)

A

Largest:MF—->ML—–>DL—->DF—->D

28
Q

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?

A

The Facial (or buccal) Groove…..Ends in the Facial (buccal) Pit…the MIDDLE third of the crown

29
Q

Permanent SECOND molar, Facial: The facial groove is ______, except for a slight ______ inclination at the facial pit.

A

VERTICAL….MESIAL

30
Q

Permanent SECOND molar, Facial: OVERALL the facial groove is located slightly ______ to the vertical line dividing the crown in half(mesiodistally).

A

distal (this makes the MF cusp wider then the DF cusp)

31
Q

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.

A

MF cusp…..greatest facial outline (aka-its TILTED in)

32
Q

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.

A

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
Q

Permanent SECOND molar, occlusial: The facial groove and the lingual groove meet the central groove at ______ angles.

A

Right angles

34
Q

Permanent SECOND molar, occlusial: What divides the occlusion surface into M and D halves?

A

the F and L grooves

35
Q

Permanent SECOND molar, occlusial: The three major grooves meet to form a “____” or “_____” design.

A

“plus” or cross”

36
Q

Permanent SECOND molar, occlusial: Since the three major grooves divide the cusps into approximately equal sizes, it is called a “___” arrangement.

A

“4+”

37
Q

Permanent SECOND molar, occlusial: The _______ pit forms where the facial, lingual, and central grooves meet.

A

Central Pit

38
Q

Permanent SECOND molar, occlusial: The central pit is located on the ______ half of the crown.

A

LINGUAL

39
Q

Permanent SECOND molar, occlusial: What anatomical structures are at the ends of the central groove?

A

Mesial Triangular Fossa and Distal Triangular Fossa

40
Q

Permanent SECOND molar, occlusial: What anatomical structure is found at both the mesial triangular fossa and the distal triangular fossa?

A

the mesial triangular PIT and the distal triangular PIT

41
Q

Permanent SECOND molar, occlusial: Each cusp has M and D ______ ridges extending laterally, as well as a ______ ridge that extends toward the central _____.

A

cuspal ridges….triangular ridge…central fossa

42
Q

Permanent SECOND molar, occlusial: On MOST specimens the triangular ridges meet to form two _______ ridges.

A

2 transverse ridges

43
Q

Perm Man 3rd Molar, Facial- the 2 facial cusp variety of the facial groove ends in a ______.

A

Facial Pit

44
Q

Perm Man 3rd Molar, Facial- The facial pit is in the ______ third.

A

Middle third.

45
Q

Perm Man 3rd Molar, Facial- What structure exhibits decay because it is difficult for the Pt to clean in this area of the mouth?

A

The Facial Pit!

46
Q

Perm Man 3rd Molar, Mesial: The central groove is positioned ______ to the FL long axis bisector(middle of tooth from mesial view).

A

LINGUAL (like ALL mandibular molars!)

47
Q

Perm Man 3rd Molar, Occlusial: The crown is wider ______ than it is ____.

A

wider MD then FL (so “pinch” facial-lingually)

DENTAL ANATOMY YEAH YEAH (9 decks)

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