DENT 1041 Review TEST #2

Dental amalgam is composed of an alloy powder (made of silver, tin, copper, and zinc) that is triturated to be mixed in approximately equal parts with which of the following?

• BIS-GMA

• Mercury

• Quartz

• Gold

What is IRM the restorative material of choice for?

• an anterior esthetic restoration

• a final posterior restoration

• short-term restoration

• final cementing of a porcelain crown

What is a favorable property of a dental material?

• high solubility

• galvanic action

• low solubility

• high contraction rate

Which type of gold alloys is used for cast-removable partial dentures because of their hardness, malleability, and adaptability?

• Type I

• Type II

• Type III

• Type IV

What makes composite resin a more favorable restoration than an amalgam?

• larger preparation for proper retention

• smaller cavity preparation due to bonding

• poor match with natural tooth

• the need to triturate material before use

Wetting, viscosity, surface characteristics, and film thickness are all characteristics that affect which of the following application properties?

• curing

• retention

• adhesion

• flow

What is the organic matrix of composite resins?

• silica

• quartz

• glass

• BIS-GMA

Porcelain is chosen as an indirect restorative material for which of the following reasons?

• poor insulation

• galvanic action

• high coefficient of thermal expansion

• the esthetic colors for tooth matching

Which of the following dental restorative materials possesses the unique quality of fluoride release?

• glass ionomer

• amalgam

• composite resin

• porcelain

In addition to a shade guide, a curing light, and a composite instrument, what else may be useful during the preparation of a composite resin restoration?

• 2 x 2 inch gauze

• spatula

• a liquid dropper

• a dappen dish