Dental Materials Test II

The most frequently used abrasive in dentifrices is:

Which of the following cements is most soluble?

Mrs. Smith presents for her prophylaxis appointment after a year, rather than the 6 month prescribed time. She has a tobacco stain on the lingual surfaces of her natural teeth, two gold alloy crowns, and several esthetic restorations. Which combination of cleaning/polishing agent should be chosen?

Which of the following polishing agents is used intramurally to give a high luster to amalgam restorations?

All of the following factors affect the rate of abrasion except one. Which one is the exception?

The size of the filler particles in a dental composite determines the:

A specific amount of composite (thickness) that is cured by a light source is termed:

Which of the following abrasives would most likely be found in a polishing agent for esthetic restorations?

Polishing involves using a series of finer and finer abrasives. It can also be accomplished by using the same abrasive material in a progression of larger to smaller grit.

Which of the following characteristics best describes chemical-cure composite restorative materials?

Which of the following is harder than enamel?

Postage stamps are now self-adhesive. The paper (actual stamp) is referred too as the ___, and the sticky material on the back of the stamp is termed the

Which type of abrasive is produced for volcanoes and is used in the laboratory and on restorative materials, such as gold, amalgam, and gold foil?

An adhesive mechanism of a dentinal bonding system is a hybrid layer. It is composed of:

You are utilizing an explorer in a zigzag motion to examine an amalgam on tooth #18. As you explore the buccal cavosurface, you note a deficient amount of amalgam in several areas. Your explorer catches only as you move from restoration to the tooth. This marginal discrepancy is best described as a (an):

An example of a "vehicle" to be used with powders would be:

A combination of a pit and fissure sealant and a composite restoration is termed:

Ideally, amalgam restorations should be finished and polished after:

Which of the following cements are available in a single dose capsule, much like that of silver amalgam filling material?

What advantage do microfilmed composites have compared to microfilmed composites?

The process of producing the final shape and contour of a restoration is termed:

Orthophosphoric acid(enamel etchant) is commonly used in a ___ concentration

The "dentin debris" that is created when dentin is cut or prepared by dental instruments is called:

Dentinal bonding systems function by way of:

What occurs when a metal becomes tarnished?

When finishing the occlusal surface of an MOD restoration, care must be taken to:

An operator is polishing an amalgam and inadvertently overheats it. The overheating may likely cause the following except one. Which one is the exception?

Two dental cements that are used for caries control are:

The recommended prophylaxis pastes possess the properties of:

Finishing and polishing amalgams improves all of the following except one. Which one is the EXCEPTIONS?

When an abrasive on a dental restorative material is used, the abrasive action must be ___ the surface.

Why do primary teeth need to be etched longer than permanent teeth?

Air powder polishing is designed to remove:

When polishing amalgams, green and brown points and cups are utilized to:

Kristin has orthodontic appliances, commonly known as "braces." These include metal brackets directly bonded to the facial surface with a bonding material. One bracket breaks off, and the "failure" occurs within the bonding material. This type of failure is considered to be:

During amalgam finishing and polishing, coarser abrasives should be followed by finer abrasives. This allows for larger scratches in the amalgam surface to be reduced to less defined scratches.

When glass ionomer is mixed too slowly, the resulting mix is:

During routine polishing with pumice, ___ um of the fluoride-rich layer can be removed

Hybrid composites are recommended for:

The ___ composite restorative materials are those with a lower viscosity (decreased filler) to aid in placement

Polishing amalgam aids in reducing the likelihood that tarnish and corrosion will occur because it:

All of the following are true for ZOE except

One problem with polymers is their high coefficients of thermal expansion. These coefficients of thermal expansion. These coefficients can be ___ to ___ times greater than that of tooth structure

A metal matrix band and retainer would most likely be used to place a class ___ restoration

Which type of abrasive looks like a grayish black sand and is sometimes called "corundum"?

Abrasion resistance for hybrid composite restorations material is said to be:

Which abrasive is used as a slurry to polish amalgam restorations and is also called calcium carbonate?

Which of the following components of restorative resins acts as a "coating" and serves to transfer stress from a weak component to a stronger one?

When condensing a dental amalgam, the tip of the condenser ___ the amalgam into the cavity preparation

The use of bonding in dentistry serves all of the following functions except: