Question

The class II restoration requires a matrix band to act as an artificial wall that must make proper contact with the adjacent tooth; this is accomplished by: using a ______ in the lingual embrasure.

A) clamp
B) wedge
C) ligature
D) separator

Answer 1

In a class II restoration, a wedge is utilized in the lingual embrasure to secure the matrix band and ensure proper contact with the adjacent tooth.

Step-by-step explanation:

To achieve proper contact with the adjacent tooth during a class II restoration, a wedge is used in the lingual embrasure. The role of the wedge is to secure the matrix band around the tooth, ensuring it forms a tight seal. This acts as an artificial wall, which is necessary for the restoration material to properly fill the cavity and contour to the shape of the tooth without any gaps or overhangs. Additionally, the wedge helps to separate the teeth slightly, which ensures the restoration has a proper contact point with the adjacent tooth. The wedge facilitates a slight separation between the teeth, ensuring the restoration establishes a precise contact point with the adjacent tooth. The meticulous use of wedges enhances the precision and effectiveness of class II restorations in dental procedures, promoting durable and well-contoured results.