Quiz 4 stuff - MOD + Slot prep

Question 1

number of internal walls in MOD cavity prep
number of internal walls in MO cavity prep

number of external walls in MOD cavity prep:

Answer 1

3
2

8

internal walls: do not extend to outer surface
external walls: extend to outer surface.

Question 2

Retentive grooves start at point angle and faded at DEJ =

T / F

Answer 2

TRUE

Question 3

What is in the box in MOD cavity prep:

Answer 3

o 2 axial walls
o 2 buccal proximal surfaces
o 2 lingual proximal surfaces
o 2 gingival floors

Question 4

What is in the occlusal in MOD cavity prep:

Answer 4

o 1 pulpal floor
o 1 buccal occlusal
o 1 lingual occlusal

Question 5

One of the indications for slot prep is D3

T / F

Answer 5

False.

Indications include:
incipient proximal lesions (D1/D2)
occlusal grooves/pits are non-carious

Question 6

retentive grooves for an amalgam prep should be ___ mm at the deepest point and ____.

Answer 6

.25 mm and Faded at DEJ

Question 7

. Is there a S curve for slot prep

Answer 7

No. bc no occlusal prep

Question 8

Slot need dovetail

T / F

Answer 8

False

Question 9

Slot is for caries that present on ____ surface and no caries clinically and radiographically ____ surface

Answer 9

proximal

occlusal

Question 10

proximal clearance for SLOT prep =
 pulpal floor depth =
 axial wall depth =
 isthmus width =

Answer 10

proximal clearance for SLOT prep = 0.5 to 1mm
 pulpal floor depth = 1.5 – 2 mm
 axial wall depth = 1.2 – 1.5 mm
 isthmus width = 1 – 1.5 mm

Question 11

For an MOD retentive groove, start point angle to occlusal surface

T / F

Answer 11

FALSE

(slot prep = end at occlusal surface,
MOD = end at DEJ)

Question 12

retentive grooves are placed on the

Answer 12

axio-buccal and axio-lingual line angle

in dentin to preserve dentinal support for enamel
*want it more towards buccal/lingual line angle of axial wall bc want to avoid pulp