Toothwear 2 Flashcards
1
Q
when are fixed restorations possible
A
when 50% of tooth structure remaining is above gingival margin
2
Q
what are the problems with tooth preparation in wear cases
A
lack of occluso-gingival height
lack of occlusal space
severely compromised tooth
3
Q
what modified preparations can we do for wear cases to create retention and resistance
A
grooves
inlays
parallel preps
margins
cores
electrosurgery
surgical crown lengthening
4
Q
what material is used in wear cases
A
metal
5
Q
what surface should use metal as a material
A
palatal surface
6
Q
what preparation is required for metal margin
A
chamfer
7
Q
what preparation is required for porcelain margins
A
shoulder
