CA RDA Exam Practice

What is another name for irreversible hydrocolloid?

a. gelatin

b. alginate

c. pectin

d. agar

b. alginate

How many surfaces could a Class II restoration affect?

a. 1

b. 2-3

c. 4

d. all surfaces

b. 2-3

How long should sterilization monitoring records be kept according to the CDC?

a. for the lifetime of the practice

b. as required by state and local regulations

c. 5 years

d. 1 year

b. as required by state and local regulations

Restorative dentistry is often referred to as

a. cosmetic dentistry

b. prosthodontics

c. orthodontics

d. operative dentistry

d. operative dentistry

How does a dentist typically stabilize a tooth after an injury?

a. with a permanent cement

b. with a temporary splint

c. with dental bonding

d. with a dental crown

b. with a temporary splint

Another term for necrotic is

a. inflamed

b. healing

c. dead and nonvital

d. infected

c. dead and nonvital

What can caries automated detector devices only be used on?

a. previously treated teeth

b. virgin tooth structures

c. teeth with fillings

d. dentures

b. virgin tooth structures

Used radiograph fixer solution is usually considered?

a. safe to dispose of in regular trash

b. non-hazardous waste

c. recyclable material

d. hazardous waste

d. hazardous waste

Material Safety Data Sheets are required by OSHA's

a. Biohazardous Waste Disposal Standard

b. Bloodborne Pathogens Standard

c. Hazardous Communication Standard

d. Dental Office Chemical Use Policy

c. Hazardous Communication Standard

What population has a higher incidence of class I lesions?

a. elderly

b. adults

c. teenagers

d. children

d. children

Why is it important to date packages of sterilized instruments?

a. to keep track of usage

b. to monitor inventory levels

c. to retrieve packs in the event of a sterilization failure

d. to know the manufacturer's date

c. to retrieve packs in the event of a sterilization failure

Another name for dentinal sealer is

a. adhesive

b. desensitizer

c. etchant

d. bonding agent

b. desensitizer

At which interval must employees receive training regarding hazardous chemicals?

a. annually

b. upon hire and whenever a new hazard is introduced

c. every 6 months

d. only upon hire

b. upon hire and whenever a new hazard is introduced

How many photographs are commonly taken in the diagnostic records appointment?

a. 5

b. 6

c. 7

d. 8

b. 6

Where are auxillary attachments found on braces?

a. on the wires only

b. brackets and bands

c. on the dental chair

d. in the patient's dental record

b. brackets and bands

To prevent alveolitis after a tooth extraction, the patient should be instructed to do what?

a. rinse with salt water immediately

b. avoid drinking through a straw

c. eat hard foods

d. brush the extraction site vigorously

b. avoid drinking through a straw

How should polycarboxylate cement appear after it is mixed?

a. opaque

b. glossy

c. matte

d. translucent

b. glossy

Which of the following is the best environmental infection control practice for clinical contact surfaces with irregular surfaces?

a. regular cleaning only

b. sterilization after every use

c. covering surfaces with fluid impervious barriers

d. using a high-level disinfectant

c. covering surfaces with fluid impervious barriers

What is the purpose of selective polishing?

a. to remove all plaque

b. to polish only teeth with stains

c. to whiten teeth

d. to strengthen enamel

b. to polish only teeth with stains

While cleaning contaminated instruments, an assistant receives percutaneous injury to the finger. The assistant should first do what?

a. report to a supervisor

b. apply a bandage

c. wash hands with soap and water

d. disinfect the wound with alcohol

c. wash hands with soap and water

Fluoride-releasing restorative materials help to prevent what kind of dental caries?

a. recurrent caries

b. primary caries

c. secondary caries

d. incipient caries

a. recurrent caries

What is a removable prosthesis that replaces one or several teeth called?

a. crown

b. bridge

c. partial

d. denture

c. partial

What is the most commonly used irrigation material during root canal therapy?

a. normal saline

b. diluted sodium hypochlorite

c. chlorhexidine

d. hydrogen peroxide

b. diluted sodium hypochlorite

When transferring instruments with hinges, such as surgical forceps and scissors, the assistant should do what?

a. hand over the instrument freely

b. grasp the sharp end and hand it over

c. grasp the hinges and direct the handles to the dentist's palm

d. place them on a tray for the dentist to pick up

c. grasp the hinges and direct the handles to the dentist's palm

What is the purpose of dental sealants?

a. to whiten teeth

b. to align teeth

c. to prevent decay from pits and fissures of teeth

d. to protect the gum

c. to prevent decay from pits and fissures of teeth

With the high-speed handpiece positioned on the occlusal surface of tooth #4, where would the HVE be positioned?

a. buccal surface of #5

b. buccal surface of #4

c. lingual surface of #3

d. occlusal surface of #6

c. lingual surface of #3

The purpose of inverting the dental dam is to _____________.

a. increase patient comfort

b. prevent saliva leakage

c. make the procedure faster

d. demonstrate dental proficiency

b. prevent saliva leakage

How should contaminated reusable sharp instruments be transported from the treatment area to the processing area?

a. in an open container

b. in a sealed plastic bag

c. in a puncture-resistant container that is leak proof on the sides and the bottom

d. without any special precautions

c. in a puncture-resistant container that is leak proof on the sides and the bottom

What is used to hold tooth-whitening gel on the teeth?

a. mouth guard

b. thermoplastic tray

c. dental strip

d. cotton roll

b. thermoplastic tray

What is another term for finger rest in dental procedures?

a. pivot

b. fulcrum

c. anchor

d. base

b. fulcrum

At what phase of orthodontics would a pediatric dentist intercede in getting a patient to stop sucking his or her thumb?

a. diagnostic

b. preventative

c. corrective

d. interventional

b. preventative

According to the Center for Disease Control and Prevention, patient-care items that penetrate soft tissue are categorized as?

a. non-critical

b. semi-critical

c. critical

d. not applicable

c. critical

According to OSHA, safety measures that should be taken when using bonding materials with potential hazards must be found in a?

a. user manual

b. Material Safety Data Sheet

c. clinical procedure guide

d. safety and compliance handbook

b. Material Safety Data Sheet

Besides the assistant, what else would be located in the assistant's zone?

a. patient records

b. dental unit and assistant's stool

c. sterilization equipment

d. extraoral imaging systems

b. dental unit and assistant's stool

An example of a contaminated item commonly found in the dental laboratory would be a

a. model trimmer

b. impression

c. bite registration material

d. articulator

b. impression

In a dental setting, what may the clinical supply refrigerator be used for?

a. storing food and beverages

b. preservation of bonding materials

c. storing medications

d. preservation of dental molds

b. preservation of bonding materials

The dental history section of a health history form provides the dental team with information regarding what?

a. previous dental care and treatment

b. patient's dietary habits

c. patient's exercise routine

d. family medical history

a. previous dental care and treatment

Wha tray type is most commonly selected when using zinc oxide-eugenol (ZOE) bite registration paste?

a. metal tray

b. custom tray

c. gauze tray

d. stock tray

c. gauze tray

Which of the following succedaneous teeth are the first to erupt?

a. maxillary canines

b. mandibular incisors

c. maxillary molars

d. mandibular premolars

b. mandibular incisors

What is the correct sequence of dental instruments for a class I amalgam restoration tray based on the order of use?

a. excavator, condenser, burnisher, discoid-cleoid

b. burnisher, excavator, condenser, discoid-celoid

c. discoid-cleoid, burnisher, excavator, condenser

d. condenser, discoid-cleoid, burnisher, excavator

a. excavator, condenser, burnisher, discoid-cleoid

What is the primary purpose of dental liners?

a. to enhance the appearance of fillings

b. to protect the pulp from any type of irritation

c. to fill in gaps and prevent leakage

d. to add strength to the final restoration

b. to protect the pulp from any type of irritation

According to the OSHA bloodborne pathogens standard, how often must the written exposure control plan be updated?

a. annually

b. every 6 months

c. every 2 years

d. whenever a new employee is hired

a. annually

If left untreated, what condition may plaque buildup lead to?

a. tooth decay

b. gingivitis

c. pulpitis

d. periodontitis

b. gingivitis

According to the OSHA Bloodborne Pathogens Standard, a contaminated sharps container should be

a. transparent and sealable

b. puncture resistant and closable

c. biodegradable

d. made of cardboard

b. puncture resistant and closable

Stains that may be removed from the surfaces of the teeth are

a. intrinsic

b. extrinsic

c. permanent

d. internal

b. extrinsic

What adverse effect may a patient experience during tooth whitening?

a. bleeding gums

b. hypersensitivity

c. dry mouth

d. tooth decay

b. hypersensitivity

Stains that cannot be removed from the surfaces of the teeth are

a. extrinsic

b. temporary

c. intrinsic

d. superficial

c. intrinsic

What dental material does the laboratory technician use to set the teeth for the try-in appointment for dentures?

a. silicone

b. wax

c. composite

d. acrylic

b. wax

What is the purpose of coronal polishing?

a. to strengthen teeth

b. to remove stains and plaque

c. to prepare for surgery

d. to whiten teeth

b. to remove stains and plaque

The appropriate container for a biopsy specimen is

a. a clear plastic bag

b. single-leak proof container with a biohazard symbol

c. a reusable container without a biohazard symbol

d. any container with a lid

b. single-leak proof container with a biohazard symbol

What type of impression is taken to the dental laboratory for the fabrication of a crown?

a. preliminary

b. final

c. bite registration

d. study model

b. final

Toward which direction should the polishing stroke be directed?

a. toward the gingiva

b. away from the gingiva

c. towards the incisal and toward the occlusal

d. in a circular motion

c. towards the incisal and toward the occlusal

Angle's classification is used to classify and describe?

a. tooth decay and filling types

b. gum diseases and treatments

c. occlusal and malocclusion

d. dental instruments and their uses

c. occlusal and malocclusion

The diagnosis of inflamed pulp tissue is

a. apical abscess

b. pulpitis

c. periodontitis

d. gingivitis

b. pulpitis

What is the purpose of using a scavenger unit in a dental office?

a. collecting debris

b. water purification

c. respiratory protection during the use of nitrous oxide

d. sterilizing instruments

c. respiratory protection during the use of nitrous oxide

An oral prophylaxis includes

a. whitening the teeth

b. removal of calculus and debris

c. applying fluoride only

d. filling cavities

b. removal of calculus and debris

According to OSHA, what are considered personal protective equipment in a dental office?

a. protective eyewear, surgical masks, gloves, and gowns or lab coats

b. scavenger units and ventilation systems

c. clinical contact surfaces and barriers

d. disinfectants and sterilizers

a. protective eyewear, surgical masks, gloves, and gowns or lab coats

The _______ is used to create holes in the dental dam that are required to expose the teeth for isolation

a. dental dam frame

b. dental dam punch

c. dental drill

d. dental mirror

b. dental dam punch

Mechanical monitoring of the sterilization process should occur with?

a. every load

b. every other load

c. once daily

d. once a week

a. every load

What is used during a crown and bridge preparation to displace gingival tissue?

a. gingival retraction cord

b. dental floss

c. mouthwash

d. toothbrush

a. gingival retraction cord

Dental office appointment schedules may include blocks of time set aside for emergency patients. This time is called?

a. reserved time

b. buffer time

c. emergency slots

d. open appointment time

b. buffer time

Which of the following viral infections can be prevented through immunization?

a. common cold

b. HIV

c. Hepatitis C

d. Hepatitis B

d. Hepatitis B

How are gypsum materials mixed for dental use?

a. using an electric mixer

b. using a spatula and rubber bowl

c. pouring directly into the mold

d. with a whisk and metal bowl

b. using a spatula and rubber bowl

A correctly fitting impression tray has sufficient depth to leave a minimum occlusal/incisal clearance of how much?

a. 1.5 mm

b. 2.0 mm

c. 2.5 mm

d. 3.0 mm

b. 2.0 mm

What patient safety precautions should be considered when one is placing sealants?

a. using high-speed drills only

b. keep the etchant off the soft tissue and have the patient wear eyewear

c. only use in adults

d. no precautions necessary

b. keep the etchant off the soft tissue and have the patient wear eyewear

Work practice controls include the use of a

a. full-body protective gear

b. one-handed recapping techniques

c. biohazard disposal system

d. two-person operation method

b. one-handed recapping techniques

According to the clock concept, instruments are to be exchanged during a procedure in the

a. transfer zone

b. operator zone

c. assisting zone

d. preparation zone

a. transfer zone

What is the purpose of a holding solution?

a. to sterilize instruments

b. to prevent hardening of debris and body fluids on instruments

c. to clean the instruments

d. to lubricate the instruments

b. to prevent hardening of debris and body fluids on instruments

When a person occludes and mandibular anterior teeth cannot be seen, the diagnosis is

a. underbite

b. crossbite

c. overbite

d. misalignment

c. overbite

An exposure plan must be updated

a. monthly

b. annually and when new or modified tasks are introduced

c. every 2 years

d. only when there is an incident

b. annually and when new or modified tasks are introduced

Where would a patient's registration form be found in the dental office?

a. in the front section of the patient's chart

b. in the waiting area

c. in the dentist's personal files

d. on the office computer

a. in the front section of the patient's chart

What is required prior to the preparation of a tooth for making a custom provisional?

a. preliminary impression

b. final impression

c. dental cleaning

d. tooth extraction

a. preliminary impression

Which material allows the longest working time when constructing a custom impression tray?

a. light-cured acrylic resin

b. polyvinyl siloxane

c. alginates

d. zinc oxide eugenol

a. light-cured acrylic resin

What instrument is used to smooth the edges of a stainless steel crown after adjusting its height?

a. diamond bur

b. high-speed handpiece

c. green stone

d. amalgam carrier

c. green stone

Which model do you begin trimming first?

a. mandibular

b. maxillary

c. both simultaneously

d. neither

b. maxillary

What type of cleaning machine is used to clean contaminated instruments prior to sterilization?

a. dishwasher

b. washing machine

c. ultrasonic

d. steam cleaner

c. ultrasonic

What type of moisture control is recommended for root canal therapy?

a. cotton roll

b. dental dam

c. suction alone

d. air dryer

b. dental dam

A plastic matrix strip is used to adapt the shape of a tooth for a(an)?

a. crown

b. bridge

c. composite

d. denture

c. composite

What is a 'smile line'?

a. the curve of the lips

b. the outline of the mouth

c. the portion of the teeth shown when a patient smiles

d. the alignment of the teeth

c. the portion of the teeth shown when a patient smiles

At the time of primary teeth exfoliation, osteoclasts first cause resorption of what?

a. root

b. crown

c. enamel

d. pulp

a. root

How often is immunization against influenza administered?

a. once a year

b. every 2 years

c. once in a lifetime

d. every 6 months

a. once a year

Instruments with the greatest risk of transmitting infection are known as

a. critical instruments

b. non-critical instruments

c. semi-critical instruments

d. minimal risk instruments

a. critical instruments

Which is the minimum temperature a steam sterilizer should reach to achieve sterilization?

a. 100 C

b. 110 C

c. 121 C

d. 130 C

c. 121 C

What hand is primarily used to transfer instruments to a right-handed dentist?

a. right

b. both hands

c. left

d. either, depending on the procedure

c. left

What is the primary reason a surgical face mask must be used during a dental procedure?

a. to keep the patient calm

b. to avoid direct contact with patients

c. to protect the DHCP from exposure to spatter

d. to prevent the spread of oral diseases

c. to protect the DHCP from exposure to spatter

What is required during oral surgical procedures regarding irrigating solutions?

a. use of non-sterile irrigating solutions

b. sterile irrigating solutions using a sterile delivery system

c. any irrigating solution as long as it is used with a filter

d. use of saline water only

b. sterile irrigating solutions using a sterile delivery system

What is placed to prevent a tray from seating too deeply onto the arch or quadrant?

a. bite registration material

b. spacers

c. dental wax

d. utility wax

b. spacers

What is the purpose of a fulcrum?

a. to increase movement

b. to provide stability to the hand

c. to enhance grip strength

d. to reduce pressure

b. to provide stability to the hand

Which type of gloves should be worn by dental healthcare personnel during instrument processing and operatory cleanup?

a. surgical gloves

b. examination gloves

c. utility housekeeping gloves

d. rubber gloves

c. utility housekeeping gloves

Which of the following indicators is placed inside every package of instruments prior to sterilization?

a. biological

b. mechanical

c. chemical

d. physical

c. chemical

What classification would a lingual pit on tooth 8 be referred to as?

a. class III

b. class II

c. class IV

d. class I

a. class III

What does the patient wear on a prepared tooth while the crown or bridge is being made?

a. permanent crown

b. provisional

c. orthodontic retainer

d. nothing

b. provisional

Who can perform a dental prophylaxis?

a. dentist and dental hygienist

b. only a dentist

c. dental assistant

d. periodontist

a. dentist and dental hygienist

To reduce the contamination of cleaning solutions, what does the CDC recommend for reusable mops used on housekeeping surfaces?

a. use disposable mops only

b. soak in a strong disinfectant after every use

c. cleaned and dried before reuse

d. replace them after each use

c. cleaned and dried before reuse

Sealants are placed

a. on the tooth's surface

b. in cavities

c. in pits and fissures

d. on dental implants

c. in pits and fissures

Would a child be referred to a prosthodontist for the placement of a stainless steel crown?

a. yes

b. no

c. only if it is a permanent tooth

d. only in case of dental injuries

b. no

What is the proper method for decontaminating impressions before sending them to the laboratory?

a. only rinse with water

b. sterilize using autoclave

c. clean and disinfect

d. dry and package

c. clean and disinfect

What position(s) will the orthodontist evaluate for facial symmetry?

a. frontal and profile view

b. lateral and medial view

c. oblique and axial view

d. posterior and anterior view

a. frontal and profile view

Which of the following is a sign of anaphylactic shock?

a. nausea

b. headache

c. respiratory distress

d. itching

c. respiratory distress

What type of orthodontics involves using a fixed or removable appliance applied to a crossbite?

a. preventative

b. interceptive

c. corrective

d. cosmetic

b. interceptive