class III stuff

Question 1

what is the most important part for anterior restorations

Answer 1

The restoration, not the prep

Question 2

the stardardized prep for anterior restorations

Answer 2

no standardized cavity prep

Question 3

what is class III caries

Answer 3

caries that occures on the proximal surfaces of anterior teeth w/o incisal edge

Question 4

resond for Class III caires

Answer 4

Primary caries (50%)
Replacement of old restorations (50%)

Question 5

why replace old restorations for class III caries

Answer 5

Recurrent caries (>50%)
Esthetics
 - discoloration of restoration
 - wear of restoration
 - fractures

Question 6

how does surface remineralization occur

Answer 6

Fluorides (water, toothpastes)

Question 7

are class III caries always obvious

Answer 7

Less obvious when not cavitated

Question 8

what is needed for a visual assessment of class III caries

Answer 8

Good lighting
Dry field
Magnification

Question 9

what to look for in a visual assessment of class III caries

Answer 9

change in internal color and opacity

Question 10

visual cues for class III caries

Answer 10

Often a darker color

Opacity - enamel undermined by caries often looks more opaque

Question 11

how does transillumination work

Answer 11

teeth are translucent

decalcified enamel and dentin absorb light (Also works for tooth colored restorations

Question 12

what is the best clinical indicator of carious dentin

Answer 12

Hardness

Question 13

what should be used for tactile assessment of caries

Answer 13

Using a spoon excavator

Question 14

should you tug with an explorer tip for diagnosis of class III caires

Answer 14

NO, not good to stab

Question 15

where are class III caries usually found

Answer 15

just below the contact

Question 16

how to check is recurrent caries

Answer 16

Check if sealed, stained, or cavitated

Question 17

when to use composite for class III restorations

Answer 17

Particularly when surrounded primarily by enamel

Question 18

when to use resin modified glass Ionomer

Answer 18

when lesion is surrounded by cementum and dentin

Higher caries risk individuals

Question 19

why approach class III from the lingual

Answer 19

Least visible from the smile

Question 20

where is a class III located when approached from the lingual side

Answer 20

Just belwo the contact area

Question 21

where are the margins in an ideal class III

Answer 21

all in enamel

Question 22

what is a modified class II prep dictated by

Answer 22

a more conservative appreach dictated by the extent of caries

Question 23

when is GI good to use

Answer 23

Unfloridated water

also when not in occluse (GI wears fast when in occlusion)

Question 24

dimentions of a conventional prep class III

Answer 24

incisal wall in contact
Gingival wall has cleaance
90 degree avosurface margin
Facial depth to break facial contact minimally 1-1.5mm
axial depth .2-.5 into dentin (1mm on lateral, 1.5mm on central)

Question 25

what to do for a beveled conventional prep

Answer 25

same as conventional prep except there is a lingual bevel at 45 degrees
incisal contant mainted though

Question 26

when to use the CVIC or 8A

Answer 26

CVIC: composite (thin)
8A: amalgam