clinical composite Flashcards
1
Q
which has higher failure rate, amalgam or composite?
A
amalgam
2
Q
what is a cavosurface margin?
A
angle of tooth structure formed by junction of prepared wall and external surface
3
Q
what features should an inter proximal cavity for composite have?
A
. proximal axial bevel
.gingival bevel
4
Q
why is tertiary dentine not good to bond to?
A
irregular structure
5
Q
what is configuration factor in relation to a restoration ?
A
ratio of surfaces bonded to tooth and not bonded
buccal cavity has 1 unbounded surface so high CF
6
Q
which has higher configuration factor, buccal restoration or interproximal restoration?
A
buccal
7
Q
what effect does polymerisation contraction shrinkage have on composite?
A
deformation
