RDA 308 Unit-2 WRITTEN FINAL EXAM Chpts. 32, 33, 34, 35, 36 & 37 Dec. 2017

Block

_____ anesthesia is frequently used on the mandibular teeth and is injected near a major nerve that numbs the entire area served by that nerve branch.

Shank

The ___ refers to the part of the instrument that attaches the working end to the handle.

reduce the bacterial aerosol spray caused by the high0-speed handpiece

The HVE has three main purposes: 1) retract tongue and cheek; 2) keep mouth free of saliva, blood, debris, and water; and 3) ________.

duration

The time from when the local anesthetic takes complete effect until the complete reversal of anesthesia is the _____ of the anesthetic agent.

2:00 to 4:00

Using the operating zones based on the "clock concept," the assistant's zone for a right-handed operator is:

Mandrel

What is the name of a metal shaft on which sandpaper disks or other abrasives are mounted?

Gingival margin trimmer

Which hand cutting instrument is used to cut enamel and bevel along the gingival margins of a cavity preparation ?

Both a and c......
a) HVE c) Air-water syringe

When performing a limited rinse, what equipment would be used by the dental assistant ?

15 to 30 seconds

For today's products, an ointment type of topical anesthetic should remain on the site of injection for a minimum of ____ to have optimum effectiveness.

Hand cutting

What instruments follow the examination instruments on a try setup for an amalgam procedure ?

Induction

______ is the length of time from injection to complete and effective conduction blockage.

d) all of the above........
a) single-ended b) made of stainless steel c) used to mix liners, bases, and cements

Cement spatulas are:

rheostat

Dental handpieces are controlled by a foot-controlled device called a :

mandibular

A cotton roll holder is designed to hold multiple cotton rolls in a more secure manner for the ____ quadrant.

saliva ejector

The _____ is not strong enough to remove solid debris from the mouth.

Buccal surface of #15

If the high-speed handpiece is positioned on the occlusal surface of tooth #14, where would the assistant position the HVE ?

recent myocardial infarction

The use of an anesthetic solution without a vasoconstrictor is recommended for patients with a history of:

Ultrasonic

What handpiece uses mechanical radiant energy of water and sound vibrations to create a pulsating effect on a tooth surface to remove calculus and stains ?

Low-speed

Which handpiece would be used for porcelain adjustments ?

subsupine

The patient is positioned in the dental chair so that the head is lower than the chest. This position is called:

3.0 to 3.5

When holes are punched in the dental dam, they are spaced ___mm between the edges of the holes.

1 inch and 1-5/8 inches

The lengths of the needles used in dentistry are:

ligature

A ____ is a piece of dental floss or dental tape that should always be attached to the bow of the dental dam clamp before the clamp is placed in the patient's mouth.

laboratory

The handpiece that has the greatest torque (twisting or turning force) is the _____ handpiece.

dental operatory

The control center of the clinical area in the dental practice is the dental treatment area, also called the :

d) both a and b............
a) by the staff during personal time b) for staff meetings

The dental staff lounge should be used :

Harpoon

The _____ of the anesthetic syringe locks into the rubber stopper of the anesthetic cartridge so that the stopper can be retracted by pulling back on the piston rod.

thinner

A 30 gauge needle would be a ____ needle.

d) all of the above..........
a) four-handed dentistry b) being taught to dentists and dental assistant students for the past 40 years c) the way the dentist and the dental assistant work together to perform clinical procedures.

Team dentistry is described as :

instruments and dental materials are exchanged

The transfer zone is the area where :

Operating an x-ray unit

What is an example of Class IV motion ?

contaminated/sterile

According to OSHA standards, the central sterilization area must be clearly divided into two sections, called :

Thin, wirelike

Which of the following best describes the working end of an explorer ?

699

Which type of bur helps to provide angles to the walls of the cavity preparation with retention grooves ?

treatment that is usually painless, so anesthesia is unnecessary

Advantages of a laser handpiece over a high-speed handpiece include :

d) Both a and b...........
a) Forceps b) Pliers

Which instruments are most often referred to by number rather than by name ?

right

The dental assistant grasps the evacuator in the ____ hand when assisting a right-handed dentist.

Anesthetic cartridge

During the loading of an anesthetic syringe, the _____ is loaded first.

d) both b and c..........
b) transferred by directing the handles into the dentist's palm. c) held by the working end by the assistant during instrument fransfer.

Instruments with hinges are :

sharps container

Used or contaminated needles and cartridges are discarded in the :

Chloral hydrate (Noctec)

Which of the following types of commonly prescribed sedatives for dental patients is indicated for children ?

d) all of the above...........
a) flame b) round c) tapered

The most commonly shaped finishing burs used are _____-shaped.

Amalgamator

A device used to triturate dental materials is called a :

Limited retraction

Which of the following is not an advantage of using cotton rolls for isolation ?

more blades

A finishing bur has ____ on the working end than a restorative but because it is used for final stage polishing of a restoration.

1-5/8

A _____ inch needle would be used for an anesthetic injection for a procedure for tooth #19.

under; outside

The plastic U-shaped frame is placed _____ the dam; the metal Young frame and the Ostby frame are placed ____ the dam.

Air-water syringe

Which of the following is used along with the HVE to complete the rinsing process ?

scaling

The ultrasonic handpiece is used for :

Round

Which type of bur is used to remove decay during tooth preparation ?

indirect

Viewing an object through the use of a mirror is called ____ vision.

1940's

Rotary instruments were introduced in dentistry in the ____ to complement the use of hand instruments in the cutting, grinding, and polishing procedures.

Mouth mirror, double-ended explorer, and cotton pliers

The basic setup is composed of which of the following instruments ?

high; low

The high-volume evacuator (HVE) is able to take up water and debris because a _____ volume of air is moved into the vacuum hose at _____ pressure to create a strong suction.

a dry cotton roll may stick to lining mucosa and cause injury

When removing cotton roll isolation, the dental assistant must wet the cotton roll before removal because :

supine

Most dental treatment is completed with the patient in the _____ position.

d) both a and c...........
a) cement and impression spatulas c) scissors and Howe pliers

Accessory instruments can include :

Latch-type

What type of shank fits into a contra-angle attachment for a low-speed handpiece ?

carefully follow the manufacturer's instructions

When cleaning a dental handpiece, it is important to :

d) both b and c.................
b) distal aspect of the tooth c) posterior of the mouth

Dental dam clamp parts include the bow and the jaws. The bow is the rounded portion of the clamp that extends through the dam and is located towards the :

disc

A ____-shaped diamond rotary instrument is used to cut through fixed prostheses.

Both a and b.............
a) uses an aspirating syringe b) always aspirates before depositing any solution

To be certain the anesthetic solution is not injected into a blood vessel, the dentist :

frequently remove debris as it accumulates during a procedure

The purpose of a limited-area rinsing of the patient's oral cavity is to :

d) both a and b.........
a) initiate conversation with the patient b) ask the patient whether he or she has any questions about the treatment

One way to help the patient feel more comfortable and relaxed is to :

Straight fissure cross-cut: forms internal walls of the preparation

What design of bur is a 557 and what is its use ?