A matrix must be used to create a temporary wall for which of the following classifications of tooth restoration?
A)Classes I and V
B)Classes II and IV
C)Classes II and III
D)Both b and c

Question

Quizplus · Accepted Answer

A tooth that has been prepared for a class II,III,or IV restoration will have at least one proximal wall removed that must be replaced.A matrix band provides a temporary wall to hold the restorative material as it is being placed.
Classes I and V do not involve missing walls in tooth preparations.
Classes II,III,and IV require the placement of a matrix,but this is not the only correct choice.

A Matrix Must Be Used to Create a Temporary Wall