midterm1; class IV restorations

Question 1

how large should the bevel be on lingual

Answer 1

.5 mm

Question 2

how does mapping of composite color work

Answer 2

lingual and facial; enamel shade
dentin shades of varied opacities (body or opaque) to develop internal depth of color or to block out color
-white opaque shades to replicate opacities
-translucent shades (blue frost, amber, orange) for incisal effect and to differentiate dentinal lobes

Question 3

where do you determine dentin, enamel, incisal shades?

Answer 3

• dentin shade best obtained from gingival third where enamel is thinnest
• enamel shade best obtained from middle 1/3 where enamel is thickest
• incisal region is checked for translucency

Question 4

what type of etch do you do based on tooth fracture

Answer 4

• if enamel only or mostly; total etch
• if dentin only; self etch
• if majority dentin and enamel halo- selective etch

Question 5

what do you cover putty with

Answer 5

wettig resin

Question 6

what type of composite used for dental lobes

Answer 6

opaque dentin shade achromatic?

Question 7

other than dental lobes what composite is used for dentin

Answer 7

body shade (vs opaque dentin)

Question 8

what type of composite is used on facial surface

Answer 8

translucent clear to replace enamel

Question 9

how thick should the enamel shelf be

Answer 9

achromatic enamel, no thicker than .3 mm