What is the advantage of using preformed crowns for provisional coverage?
A)It reduces time required for the procedure.
B)Preformed shells comes with anatomic features of natural teeth.
C)Monomer setting time is less than 90 seconds.
D)Both a and b are advantages.

Question

Quizplus · Accepted Answer

Use of a preformed crown for provisional coverage reduces time needed for the appointment,because it eliminates the procedural step of taking a preliminary impression or fabrication of a thermoplastic tray.The preformed shells are designed with anatomic features of natural teeth.
One advantage of using preformed crowns for provisional coverage is that the shells are designed with anatomic features of natural teeth.
The monomer mixture has a setting time of 90 seconds.

What Is the Advantage of Using Preformed Crowns for Provisional