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Pres Res 2 > Quiz 2 Exam 1-Review of class 1s > Flashcards

Quiz 2 Exam 1-Review of class 1s Flashcards

1
Q

Preserve what on mandibular molars

A

Marginal Ridge

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2
Q

Include all central developmental groove, but extend __________ up the ______

A

1/3-1/2 up the buccal

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3
Q

Include which triangular fossas in mandibular molar class 1 prep

A

M and D Triangular Fossas

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4
Q

Extend ____ way up the M-B and M-L cusps

A

1/4

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5
Q

For maxillary molar Class 1, include which pits?

A

M, central, distal pit

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6
Q

Appearance of Max Molars Class 1

A

Modified butterfly

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7
Q

Preserve what in class 1 on max molars

A

M marginal ridge

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8
Q

How to preserve oblique ridge on max molar class 1 prep

A

extend only 1/4 its height

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9
Q

Include all of what groove on max molar class 1 prep, but just 1/3-1/2 of the ______ developmental groove

A

buccal

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10
Q

Mesial Triangular fossa included in Max molar class 1?

A

Yes

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11
Q

Extend ___ way up M-B and M-L cusps on a max molar class 1 prep-and consider the D pit

A

1/4 the way all of them (D-B and D-L too

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12
Q

Resistance form includes (4)

A

90 degree cavosurface margin

Cusps and ridges preserved by limiting extensions to 1/4 their heights

Flat pulpal floor that is perpendicular to occlusal forces

Divergence of M and D walls to avoid unsupported proximal enamel

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13
Q

Retention Form (3)

A

M and D dovetails

Undercut M-B and M-L cusps

friction resistance of vertical walls

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14
Q

M and D cavosurface angles should be _______ to their respective ridges

A

parallel

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15
Q

Max molars L pit form

A

Elliptical form

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16
Q

Extend L pit of max molars how far

A

include all of the affected portion of groove

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17
Q

Retention form Max Molars L pit

A

Retention form:
Mesial and distal walls are parallel to each
other OR slightly converging; retention is
largely frictional resistance to displacement

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18
Q

Axial wall of Max molars L pit has an outline form which is what to the external tooth surface-and where?

A

Parallel and 0.5mm inside the DEJ

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19
Q

When do you include the D and L pit in one prep on a max molar?

A

On an OL, where the groove which connects them is involved

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20
Q

On a max molar OL-you terminate the groove extension where?

A

Just gingival to the termination of the lingual groove

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21
Q

Indication for Max molar Class 1 OL

A

Used when the L fissure connects with the D oblique fissure and D pit on the Occlusal surface

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22
Q

M-D isthmus width of L extension on max molar OL should be approximately what? Is there an exception?

A

1mm-EXCEPT when removing carious or undermined enamel

23
Q

On a max molar OL-When indicated, the preparation should

be cut more at the expense of the ______ and______ rather than _______

A

cut at the expense of the oblique ridge and buccal cusp rather than centering over the fissure and thus weakening the small DL cusp

24
Q

On a max molar OL-you want to be sure to preserve two things, what are they?

A

The oblique ridge, but most importantly the small DL cusp

25
Q

The pulpal wall of a Max First molar OL prep may have a slight ______ inclination to conserve dentin support of the distal marginal ridge

A

Distal

26
Q

Both OL and OB are class 1s, T or F?

A

True-duh

27
Q

the target axial wall depth on an OL prep on #3 is what?

A

1.0mm

28
Q

Axial depth is from where to where?

Thus it is synonymous with what on an OL?

A

From the external tooth to the axial wall

Thus it is the B-L dimension of the box on an OL

29
Q

on a max molar OL, The occlusal portion may have what to conserve the dentin support

A

the occlusal portion may have a slight distal inclination (from gingival to occlusal) to conserve the dentin support of the distal marginal ridge

30
Q

Walls which converge on a max molar OL

A

M and B walls converge, as does most of the Distal (not the D-O)

31
Q

D wall of a max molar does what on an OL

A

D-O diverges while the distal wall is convergent

32
Q

Isthmus width for amalgam preps

A

At least 1.0mm to pass smallest amalgam condenser through

33
Q

A M-D width of what is a DEF on a mx molar OL-or probably any prep?

A

2.5mm

34
Q

Max ant class 1 prep outline form

A

Lots of variation-but in general- a rounded triangle with the apex in the pit and the sides corresponding to the M and D marginal ridges

35
Q

Walls are ______ to slightly ______ from the axial wall to the cavosurface on a Max ant class 1 prep

A

parallel to slightly converging

36
Q

On a max ant class 1, orient the axial wall how? why?

A

parallel to the external tooth surface in order to avoid pulp exposure

37
Q

How should the bur go in on a max ant class 1?

A

perpendicular to the lingual surface

38
Q

Total depth of max ant class 1 to not jeopardize pupal tissue

A

1.5mm

39
Q

Class V outline form clinically

A

Only extend far enough to remove caries and unsupported enamel

40
Q

Cavosurface bevels on a class V?

A

NO! Contraindicated

41
Q

Shape of Class V amalgam prep

A

Kidney bean shaped

42
Q

Cavosurface margins of Class V amalgam prep

A

90 degrees

43
Q

External wall orientation on a class V amalgam prep

A

Perpendicular to external tooth-parallel to enamel rods

44
Q

Incisal/O depth of Class V?

Gingival axial depth of Class V amalgam prep?

A

O=1.25mm

Gingival=0.75mm

45
Q

Axial wall depth of class V in comparison to DEJ

A

0.5mm inside DEJ

46
Q

Contour of axial wall of Class V prep

A

Convex!

47
Q

Orientation of all the walls on a class V amalgam prep

A

All diverging

48
Q 
Retention of class V amalgam Prep
-where are they? depth? orientation?
A

Retention grooves

  • entirely in dentin
  • 1/2mm inside the DEJ, regardless of axial wall depth
  • Orientated O/incisally and gingivally, NOT axially
49
Q

How to include more carious dentin in class V (extend?)

A

Finger extensions-do not extend full prep

50
Q

Internal walls include?

A

Internal Walls
Axial – parallels long axis, vertical plane of the tooth adjacent to pulp

Pulpal - perpendicular to the long axis of the tooth closest to the pulp in horizontal plane

51
Q

Axial wall runs what to the tooth

A

parallel to long axis

52
Q

Pulpal wall runs what to the tooth

A

perpendicular to the long axis

53
Q

Line angle

A

junction of two walls

54
Q

Point angles

A

junction of three walls

Pres Res 2 (4 decks)

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