Oregon EFDA

Which of the following is not a factor used in selecting a tray for successful fluoride application?

Achieves minimal coverage not extending to exposed root surfaces

If using wax for a bite registration, it should be _________ before the wax bite registration is taken.

warmed until it is softened

Which of the following statements is true of cariogenic foods?

Complex carbohydrates are less cariogenic because they clear the mouth before they are converted into simple sugars that can be used by bacteria.

For sedation the patient must not eat for how many hours prior to anesthesia?

8-12

The arch wire is positioned by using ________ pliers to slide the wire in on either side of the arch and to position the wire in the bracket slots.

Weingart utility

_____________ composites contain the largest filler particles and provide the greatest strength.

Macrofilled

Topical anesthetics are used in dentistry prior to administering local anesthesia primarily for

numbing surface tissue., patient comfort.

Separators are placed

before the appointment during which bands are to be fitted.

When condensing amalgam

the size of the condenser must reflect the size of the cavity preparation.

The soft liner is placed in the prosthesis for about ________________.

3 or 4 days

An impacted or unerupted tooth is usually charted by drawing

a circle around the whole tooth.

In oral and maxillofacial surgery, the IV is most commonly placed in the

vein in the lower arm or hand.

A method of sedation that allows the patient to be heavily sedated, however is able to interact and respond, often slowly, is which type of the following?

Conscious sedation

The percentage of the acid etch that is usually used is

37% phosphoric acid.

Which of the following statements is true of carbohydrates?

Most refined carbohydrates supply only "empty" calories with no other nutrients or fiber.

Which of the following procedures is critical in the fabrication of a custom temporary crown?

Obtain a preliminary impression

Prior to administering a medication into an intravenous line, what should be done to prepare the site?

Clean syringe and insertion site with alcohol

Which form of gypsum is used primarily for pouring preliminary impressions and making diagnostic models?

Model plaster

Amalgam restorations are held in by ___________ retention, resin fillings are held in by _________ retention.

Mechanical, chemical

When constructing a mouth guard, a _____________ plastic is used.

flexible, heavy-gauge

Which of the following statements is true regarding the celluloid or Mylar strip used for a class III or IV restoration?

The clear plastic allows the curing light to penetrate the material, thereby completing the curing process.

Caution should be exercised while using a curing light to protect which of the following from damage?

Newly erupted tooth

The recommended etching time for placement of sealants in permanent teeth is

20-30 seconds.

An ECG is a measurement of which of the following during a sedation procedure?

It measures the heart rhythm.

The two types of stainless steel crowns that are available are __________ and __________.

pretrimmed; precontoured

An elastomeric ring separator is placed by ____________ motion to force it through the contact.

stretching the ring and then using a see-saw

Ligature ties are removed by

snipping at the end of the twisted wire using a ligature cutter, avoiding twisting or pulling to remove the ligatures.

High speeds when using the prophy angle and handpiece can cause which of the following?

Burn to gingiva

An acceptable temporary crown will be within what distance of the preparation margin?

0.5 mm

A _________________ is designed to hold and retract the cheeks and tongue during surgical procedures.

cheek and tongue retractor

Orthodontic duties of the dental assistant may include

placement and removal of separators.

The American Heart Association recommends that no more than ___% of the daily calorie intake should be in the form of fats.

30

When using the halogen light to cure composites, the light probe should be held

as close as possible without actually touching it while curing.