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614 Intro to Restorative Dentistry > 12. Mx 1st and 2nd Molars > Flashcards

12. Mx 1st and 2nd Molars Flashcards

1
Q

1st Molar:

ML cusp occludes in the central fossa of what tooth?

A

Mn 1st molar

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2
Q

1st molar:

DL cusp occludes on the _ of the Mn 1st molar

A

DMR

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3
Q

Facial view: 1st Molar

Facial cusps are slightly _ than lingual cusps and mesial cusps are _ than distal cusps

A

taller

taller

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4
Q

Facial view: 1st Molar

Facial cusps are more _ than lingual

A

pointed

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5
Q

Facial view: 1st Molar

MF cuspal ridges meet at an _ angle

A

obtuse

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6
Q

Facial view: 1st Molar

DF cuspal ridges meet at an _ angle

A

90 degree

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7
Q

Facial view: 1st Molar

Facial groove extends to a point in the center of the _ surface and points more _

A

facial

distal

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8
Q

Facial view: 1st Molar

Facial surface has a slight depression extending _

A

laterally

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9
Q

Facial view: 1st Molar

Vertical _ ridges are present

A

facial

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10
Q

Facial view: 1st Molar

The cervical ridge runs MD just above the cervical line but only in the _ 2/3 of the cervical 1/3 of the crown

A

mesial

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11
Q

Facial view: 1st Molar

Cervical line curves _ and comes to a point centered with the furcation between the MF and DF roots

A

apically

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12
Q

Facial view: 1st Molar

MF root extends mesially for _ thirds its length then curves to the distal

A

2/3

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13
Q

Facial view: 1st Molar

DF root is straighter and _ than the MF root

A

shorter

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14
Q

Facial view: 1st Molar

The lingual root is the longest of the 3 roots by about _ mm

A

1

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15
Q

Lingual view: 1st Molar

ML cusp is very wide and occupies _/5 the total MD measurement

A

3/5

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16
Q

Lingual view: 1st Molar

DL cusp is so rounded it is sometimes described as _

A

spheroidal

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17
Q

Lingual view: 1st Molar
Carebelli’s cuspal ridges are _ to the ML cuspal ridges and are about _mm cervical to the occlusal outline of the ML cusp

A

parallel

2mm

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18
Q

Lingual view: 1st Molar
The lingual groove is an extension of the _ groove and slants cervically, diagonally, then parallel with long axis until it ends in a pit near the center of the lingual surface

A

distal oblique

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19
Q

Lingual view: 1st Molar

The apex of the lingual root will be in line with the occlusal end of the _ groove

A

lingual

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20
Q

Lingual view: 1st Molar
A shallow developmental depression is present on the middle 1/3 of the lingual root that extends down its length and onto the _ third of the crown

A

cervical 1/3

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21
Q

Mesial view: 1st Molar

Greatest curvature facially is in the _ third and lingually in the _ third

A

cervical

middle

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22
Q

Mesial view: 1st Molar

Little occlusal anatomy is seen from this view since the MF and ML cusps are _

23
Q

Mesial view: 1st Molar

The cervical line will extend occlusally at a high point slightly _ to the FL long axis bisector

24
Q

Mesial view: 1st Molar

Only 2/3 roots are visible since the _ root is wider and taller than the DF root

25
Q

Mesial view: 1st Molar

MF root has a width that extends about _/3 the cervical measurement of the crown

26
Q

Mesial view: 1st Molar

MF root has a _ but shallow depression extending its length and onto the cervical 1/3 of the crown

27
Q

Mesial view: 1st Molar

MF root extends out facially in its middle 1/3 then curves _ to the apex with is in line with the _ cusp

A

lingually

MF

28
Q

Mesial view: 1st Molar

Lingual root is shaped like a _

29
Q

Distal view: 1st Molar

The crown is _ in the distal half making it possible to see the facial surface of the tooth

30
Q

Distal view: 1st Molar

A shallow depression is found on the root trunk which extends onto the _ third of the crown

A

cervical 1/3

31
Q

Occlusal view: 1st Molar

Crown is _ mesially than distally and wider _ than _

A

wider

Lingually than facially

32
Q

Occlusal view: 1st Molar

Mesial contact is _ to FL bisector while the distal contact is _

A

facial

centered

33
Q

Occlusal view: 1st Molar

The oblique ridges is connected by the _ of the DF cusp and the _ of the ML cusp

A

triangular ridge

distal ridge

34
Q

Occlusal view: 1st Molar

The low point of the oblique ridge is at the same level as the _ and _

A

DMR and MMR

35
Q

Occlusal view: 1st Molar

The 2 major fossae are _ and _

A

central and distal

36
Q

Occlusal view: 1st Molar

The 2 minor fossae are _ and _

A

distal and mesial triangular fossae

37
Q

Occlusal view: 1st Molar

_ is the groove that crosses the oblique ridge

A

transverse groove of the oblique ridge

38
Q

Facial view: 2nd Molar

The DF cusp is always _ than the MF cusp

39
Q

Facial view: 2nd Molar

The facial cusps tips help maintain the convex arch of the _

A

Curve of Spee

40
Q

Facial view: 2nd Molar

The facial groove is _

41
Q

Facial view: 2nd Molar

Root trunk is _ than that of the 1st molar

42
Q

Facial view: 2nd Molar
The overall root lengths are _ than those of the 1st molar, however, the actual root lengths are shorter and less _, with a higher chance of curving distally

A

longer

divergent

43
Q

Lingual view: 2nd Molar

ML cusp is more nearly _

44
Q

Lingual view: 2nd Molar

DL cusp is _ than that of the 1st molar

45
Q

Lingual view: 2nd Molar

The root depression does not _ onto the crown

46
Q

Lingual view: 2nd Molar

Roots curve to the distal, so that the lingual root is in line with the _ cusp

47
Q

Mesial view: 2nd Molar

Roots are closer together and are never _ than the total FL measurement of the crown

48
Q

Mesial view: 2nd Molar

The root depression is confined to the _ root

49
Q

Occlusal view: 2nd Molar

ML and DF line angles are _ while the MF and DL are _

A

obtuse

acute

50
Q

Occlusal view: 2nd Molar

Central pit extends _ from the central pit to the mesial pit in the mesial triangular fossa

51
Q

Occlusal view: 2nd Molar

The distal oblique groove and lingual groove are both _

52
Q

Occlusal view: 2nd Molar

Mesial contact is _ while the distal is _

A

facial

centered

53
Q

Occlusal view: 2nd Molar

Compared to the 1st molar, usually has more _

A

secondary grooves

614 Intro to Restorative Dentistry (8 decks)

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