W6. Matrix systems

Question 1

1. What is the Primary function of the matrix systems?

Answer 1

• providing the missing proximal wall
• proper anatomic contour and contact area (contact point!) reestablishment

Question 2

2. What are the 8 qualities of a good matrix?

Answer 2

1. both rigidity and flexibility
2. polished surface
3. possibility of the condensation of the filling material
4. prevention of gingival excess material (with wedge)
5. establishment of the proper anatomic contour
6. restoration of correct proximal contact relationships convinient application
7. ease of removal