Exam 49: Matrix Systems for Restorative Dentistry

To contour a metal matrix band for posterior teeth,place the band on a paper pad and rub the inner surface of the band with _____ until the ends begin to curl.

A matrix must be used to create a temporary wall for which of the following classifications of tooth restoration?

Which type of matrix system is used for the primary molars?

Which matrix system is used for anterior composite resin or glass ionomer restorations?

What is the component of a universal matrix retainer that serves to guide the direction of the matrix loop according to the quadrant that is being treated called?

Where should the cervical margin of a matrix band lie?

How would an anterior matrix band be contoured?

The Tofflemire retainer that has been designed with a slight bend in the body to accommodate positioning from the lingual surface is known by what name?

What is the purpose of a matrix system?

Which statement is correct concerning the purpose of the anterior matrix systems? (Select all that apply.)

Mylar strips are used for class ___ restorations.

What is the term for excess restorative material that extends beyond the cavity margin?

What is the correct order of steps for preparing the T-band matrix? 1) Close the wings and pull the free end to make a small loop of the band. 2) Holding the free end of the band toward the facial,place the band loop on the tooth. 3) Bend the wings of the T-band to form a U-shape. 4) Slip the free end of the band through the U formation.

The universal,or Tofflemire,retainer holds the matrix band snugly in position.It is most often positioned in which area?