Week 3- Clinical technique for class IV

Question 1

in what situation would a class IV restoration NOT require a matrix band?

Answer 1

very small fracture on incisal surface

Question 2

what matrix used for class IV restoration?

Answer 2

mylar strip matrix band

Question 3

advantage of matrix band?

Answer 3

prevent under-contouring (rounding)

Question 4

true/false: matrix positioned and wedged like class II restoration?

Answer 4

false; like class III restoration

Question 5

when should composite shade be selected?

Answer 5

before isolation of area and restorative material set

Question 6

true/false: adhesives are the same as class III restoration?

Answer 6

true

Question 7

composite should be inserted in increments less than ______ thick

Answer 7

2mm

Question 8

what order should composite be applied in class IV restoration?

Answer 8

lingual -> body -> facial

helps develop proper anatomy and shading

Question 9

true/false: color modifiers or tints may be inserted between composite layers?

Answer 9

true

Question 10

if large amount of tooth structure is missing then what is needed?

Answer 10

groove retention forms using no.1/4 round bur

Question 11

when should you bevel cavosurface margin in class IV restoration?

Answer 11

if confined to just enamel