Chapter 35 Quizs

Zaira and Kelsie are learning about restorative dentistry in their dental class. Their instructor asks them: The most frequently used instrument in restorative dentistry is the

• amalgamator.

• dental handpiece.

• prophy angle.

• x-ray machine.

During a dental class, Sierra is learning how to remove caries while preparing a tooth. Which type of bur should Sierra use for this procedure?

• Round

• Straight fissure plain-cut

• Straight fissure cross-cut

• Tapered fissure plain-cut

Sierra is learning about dental tools in her dental hygiene class. Her instructor asks her which procedure air abrasion handpieces are most effective for. What should Sierra answer?

• external stain removal.

• scaling of accretions from tooth root surfaces associated with periodontal pockets.

• tactile feedback to identify sound dentin.

• surgical exposure of implant fixtures for removal of the cover screw.

Sierra and Kelsie are preparing dental handpieces for sterilization after a procedure. Why is it important for them to clean debris from the external surface of the handpiece prior to sterilization?

• Mercury from removal of amalgam restorations can be vaporized by the autoclave.

• The turbine may not work properly if the debris has not been removed.

• Suckback from the delivery system will retract the debris and create cross-contamination between patients.

• Residual debris will clog the bur when treating a subsequent patient.

During a dental lab session, Estephania and Gagan are learning about the uses of a low-speed motor. All of the following are uses for a low-speed motor except

• removal of old or faulty restorations.

• finishing and polishing restorations.

• root canal treatment.

• coronal polishing and removal of stains.

Zaira is assisting Dr. Kelsie in the dental clinic. They need to make an adjustment to a porcelain restoration. Which tool should they use?

• high-speed handpiece.

• ultrasonic handpiece.

• low-speed motor.

• laser handpiece.

Sierra and Gagan are working on a woodworking project in class. They need to attach sandpaper disks to a tool. The metal shaft on which sandpaper disks and other abrasives are mounted is called a

• shaft.

• working end.

• screw.

• mandrel.

Lacey and Gagan are working together in their dental laboratory class. They need to select the most commonly used bur for their project. Which one should they choose?

• carborundum.

• sandpaper disks.

• acrylic bur.

• cuttlebone.

Sierra and Gagan are comparing dental burs. Sierra notices that one bur has more cutting surfaces on its head than another. The greater the number of cutting surfaces on the head of a bur, the

• greater the polishing or finishing capability.

• lesser the polishing or finishing capability.

• greater the cavity preparation capability.

• lesser the cavity preparation capability.

While preparing a fiber optic handpiece for use, Lacey wipes the light port with an alcohol swab to remove excess lubricant. Why is this recommended?

• lubricant is toxic if placed in a patient’s mouth.

• lubricant will turn to sludge when autoclaved and gum up the handpiece.

• light will be dimmed if any lubricant remains.

• components of the handpiece will become more brittle if exposed to the lubricant for an extended period of time.