Practice Quiz Chapt 49 Flashcards
Mrs.O class
The part of the Tofflemire matrix retainer that tightens the band securely within it is the
outer knob.
A wedge is most commonly placed from the ________ side into the interproximal space.
Lingual
The slotted surface of a Tofflemire retainer is always positioned toward the….
gingiva.
The used matrix band should be disposed how ?
discarded in the sharps container.
When assisting in an anterior composite resin restoration, the tooth
is etched after the celluloid band is placed.
When placing a posterior matrix, a burnisher is used to
contour the band.
What are best used with primary teeth?
T-bands & pot-welded bands
During the restoration process, a celluloid matrix band may be used to
- protect the adjacent teeth
- aid in reconstruction of the tooth’s natural contour
- allows the curing light to penetrate through the band to complete the curing process.
Cupping refers to
a form created by a concave tooth surface that has not been properly contoured
An alternative to a universal matrix that has cylinder band and no retainer to hold the band in place is ?
AutoMatrix
A retainerless matrix systems that is used to provide a temporary interproximal wall for placement of a posterior restoration is
AutoMatrix
Improper wedge and band placement can lead to
cupping and overhangs.
The plastic matrix strip is the best type of matrix band to use for posterior composite restorations.
T or F ?
False
One of the most important goals in placing a Class II composite restoration is to restore the contact back to the normal function with the adjacent tooth.
True
