Matrix system Flashcards
1
Q
What is the purpose of a reverse curve
A
breaks the inter proximal contact
2
Q
Reverse curve is needed n the (buccal/lingual) and why?
A
buccal because the proximal contact is more buccal
3
Q
(T/F) All martyring systems no matter what the brand all have these three components: Ring, wedge, and matrix
A
t
4
Q
What are the purpose of the “bellies” of the sectional matrices
A
they go down to the gingiva to account for deep proximal boxes
5
Q
What are the two types of rings
A
single tynes verses split tynes
6
Q
Which type of ring is mean to be used with a wedge (single or split tyne)
A
split tyne
7
Q
What is the difference between the wooden and plastic wedges
A
the wood will swell from absorbed moisture that can lead to separation between the adjacent tooth (a plastic wedge will never do this
