Chapter 49 Workbook Multiple Choice and Fill-In-The-Blank

____________ and __________ are other names for clear plastic strip that is used to provide a temporary wall for the restoration of an anterior tooth.

Celluloid strip and Mylar

Excess restorative material that extends beyond the cavity margin because of improper wedge placement is revered to as a(n) ________________.

overhang

____________ is a term that is used when a restoration on a tooth surface is concave and has not been contoured properly.

Cupping

A(n) __________ is placed in the embrasure to provide the contour needed when the interproximal surfaces of a class II, III, or IV restoration are restored.

wedge

A(n) __________ is a band that acts as a temporary wall for a tooth structure in restoring proximal contours and contracting to its normal shape and function.

matrix

A(n) ___________ is a small. oval-shaped matrix made of polished stainless steel that can be used for posterior amalgam and composite materials.

Palodent

The __________ is a matrix system designed to establish a temporary wall for the restoration of a class II restoration without the need to used it as a retainer.

automatrix

The _____________is used to keep a matrix band in place during a class II restoration.

Universal Retainer

Which classification would require using a matrix system?

class II

The plural word for matrix is ___________.

matrices

Which would be used to hold a posterior matrix band in positiong?

Universal retainer

In what direction is the smaller circumference of the posterior matrix band positioned when place properly?

Gingival

Which instrument could be selected to thin and contour a matrix band?

Burnisher

What additional item is placed for a posterior matrix system to reestablish proper interproximal contact of the newly placed material?

Wedge

What could improper wedge placement result in?

Cupping and Overhang

Which matrix system could be an alternative to the universal retainer?

Automatrix

Why are metal matrix bands contraindicated with the use of composite resin materials?

The metal can scratch some composite resins.

Another term(s) for the clear matrix is __________.

Celluloid and Mylar strip