WorksheetsChapter 25 & 36 Moisture Control Test
Total questions: 43
Worksheet time: 22mins
Name
Class
Date
1.
What are the sources of moisture in the oral cavity?
a)
Mucus, Sweat, Tears, Urine
b)
Water, Saliva, Gingival crevicular fluid, Blood
c)
Saliva, Blood, Air, Food
d)
Oil, Vinegar, Soy Sauce, Ketchup
2.
Which oral evacuator is used during less-invasive dental procedures?
a)
Saliva ejector
b)
High-volume evacuator (HVE)
c)
Operative suction tips
d)
Surgical suction tips
3.
What is the daily maintenance requirement for the high-volume evacuator (HVE)?
a)
Replace the entire HVE system every week
b)
Check the disposable traps weekly, and replace if needed
c)
Open the saliva ejector hoses, and clean or replace the screens as needed
d)
Flush the hoses at the end of the day with water
4.
Where should the saliva ejector be positioned during a dental procedure?
a)
On the cheek
b)
Under the tongue
c)
On the surface of the operative tooth closest to you
d)
Opposite the side on which the dentist is working
5.
What is the purpose of a high-volume evacuator (HVE) in dental procedures?
a)
To retract the tongue and cheek away from the field of operation
b)
To keep the mouth free of saliva, blood, water, and debris
c)
To prevent bacterial aerosol caused by the high-speed handpiece
d)
To provide limited-area rinsing
6.
What is the purpose of rinsing the oral cavity during a dental procedure?
a)
To maintain a clear operating field for the dentist and keep the patient comfortable
b)
To remove all the teeth from the oral cavity
c)
To prevent the patient from speaking
d)
To create a moist environment for the dentist
7.
What is the purpose of the air-water syringe in dental procedures? ( select all that apply )
a)
To dry the oral cavity
b)
To keep a close distance between the operative site and the syringe tip
c)
To provide indirect vision
d)
To provide limited-area rinsing
8.
What are the criteria for isolation techniques in dental procedures?
a)
Easy to apply, Protective of soft and hard tissues, Comfortable for the patient, Prevention of moisture contamination
b)
Easy to apply, semi comfortable for patient, Retraction provides better visualization for the operator, Moisture contamination
c)
Hard to apply, Comfortable for the patient, Limited retraction, Moisture contamination
d)
Easy to apply, Comfortable for the patient, Retraction provides low visualization for the operator, Limited retraction
9.
During a dental procedure, the saliva ejector should be placed _______ the tongue on the __________ where the dentist is working.
a)
over; same side
b)
under; same side
c)
over; opposite side from
d)
under; opposite side from
10.
After it is used, a plastic HVE tip is
a)
thrown away.
b)
disinfected with a surface disinfectant.
c)
disinfected with an immersion disinfectant.
d)
sterilized in an autoclave.
11.
The dental assistant grasps the evacuator in the ________ hand(s) when assisting a right-handed dentist
a)
right or left
b)
left
c)
right
12.
The HVE suction tip should be positioned
a)
after the dentist positions the handpiece and mouth mirror.
b)
so that the edge of the suction tip is even with or slightly beyond the occlusal surface or incisal edge
c)
so that the bevel of the suction tip is perpendicular to the tooth surface.
d)
on the surface of the operative tooth closest to the dentist.
13.
Which of the following is used along with the HVE to complete the rinsing process?
a)
Dental dam
b)
Air-water syringe
c)
Cup of water
d)
Dry-angle
14.
The isolation of anterior teeth is usually
a)
only on the tooth being restored.
b)
from canine to canine.
c)
on the tooth being restored and one tooth on each side.
d)
on the quadrant in which the tooth to be restored is located.
15.
Maintenance of the evacuation system includes each of the following except
a)
flushing the hoses at the end of the day with antimicrobial solution.
b)
opening saliva ejector hoses and cleaning or replacing screens.
c)
checking disposable traps weekly and replacing them if needed.
d)
replacement of the entire system on a yearly basis.
16.
The high-volume evacuator (HVE) has three main purposes: (1) retract tongue and cheek; (2) keep mouth free of saliva, blood, debris, and water; and (3)
a)
reduce the bacterial aerosol spray caused by the high-speed handpiece.
b)
keep the patient’s mouth fresh.
c)
keep oral tissues from dehydrating.
d)
curette the tooth socket following extraction of a tooth.
17.
All of the following are indications for using the saliva ejector except
a)
control saliva and moisture accumulation.
b)
removal of solid debris.
c)
cementation of crown.
d)
fluoride treatments.
18.
All of the following are guidelines for using the air-water syringe except
a)
keeping a close distance between the tooth and syringe tip.
b)
using air on the mouth mirror when indirect vision is involved.
c)
directing the syringe tip toward the tooth being treated.
d)
directing the syringe tip toward the patient’s nose and lips.
19.
When the high-speed handpiece is positioned on the occlusal surface of tooth #3, where would the assistant position the HVE?
a)
Lingual surface of #3
b)
Lower left buccal vestibule
c)
Buccal surface of #4
d)
Buccal surface of #2
20.
The type of plaque that develops inside DUWLs, consisting of bacterial cells and other microbes, is called
a)
the infective layer.
b)
microfilm.
c)
biofilm.
d)
slime.
21.
Backflow from low-volume saliva ejectors can occur when a patient
a)
is positioned in a reclined position in the dental chair.
b)
closed their mouth around the saliva ejector or HVE
c)
has been using a saliva ejector for more than 10 minutes.
22.
Flushing the dental unit waterlines (DUWLs) for 2 minutes at the beginning of the treatment day and for 20 to 30 seconds between patients will help to
a)
reduce prep time between dental patients.
b)
reduce the microbial count of bacteria in the dental unit waterlines.
c)
clean the dental unit water that is used for surgery involving exposure of bone.
23.
The goal of ergonomics is to help people
a)
adapt the human body to the work environment.
b)
increase their range of twisting and reaching motions.
c)
establish sequences of repetitive motions to reduce work strain.
d)
stay healthy while performing their work more effectively.
24.
All of the following factors contribute to musculoskeletal disorders (MSDs) except
a)
posture.
b)
repetition.
c)
twisting.
d)
force.
25.
The ideal working position for a dental assistant is
a)
a neutral position sitting upright with body weight evenly distributed.
b)
standing chairside.
c)
seated, leaning forward supported by the stool arm.
d)
knees and feet together.
26.
The first symptom of carpal tunnel syndrome (CTS) is often a(n)
a)
decreased ability to squeeze an object.
b)
painful tingling in one or both hands that occurs at night
c)
painful swelling of joints in the fingers.
d)
inability to button clothing.
27.
To relieve stress on the back, neck, and shoulders, a dental assistant can
a)
periodically get up and walk around.
b)
perform a full back release and head rotations.
c)
lie down in the dental chair.
d)
do isometric muscle exercises.
28.
To prevent eyestrain, the dental assistant should
a)
always wear safety glasses.
b)
look up frequently and focus on a point in the distance for about 20 seconds.
c)
focus on the dentist’s hands and patient’s mouth.
d)
never look at the curing light.
29.
In carpal tunnel syndrome (CTS), tendons swell and exert pressure on the
a)
carpal bones.
b)
volar carpal ligament.
c)
median nerve.
d)
synovial sheath.
30.
The full back release involves
a)
drawing the left arm across the chest and moving the head slowly to the right.
b)
dropping the head down slowly while allowing the arms and head to fall between the knees.
c)
placing the hands and knees on a flat surface and arching the back like a cat.
d)
touching your toes and then hyperextending your back and neck.
31.
The risk for cumulative trauma disorders (CTDs) can increase with
a)
standing in one position for extended periods of time.
b)
overflexion and overextension of the wrist.
c)
slouching.
d)
alternating difficult procedures with less stressful procedures.
32.
Prevention of carpal tunnel syndrome (CTS) can be accomplished by
a)
full back release.
b)
frequently resting the hands.
c)
shoulder shrugging.
d)
head rotations.
33.
Which of the following helps to stretch shoulder muscles that may be strained?
a)
Slowly opening and closing the hands
b)
Pressing palms together and then relaxing them
c)
Shoulder shrugging
d)
Head rotations
34.
How often should stretching be done during a day?
a)
Once in the morning
b)
Once at noon
c)
Once in the evening
d)
Throughout the day
35.
Body mechanics for the chairside dental assistant include
a)
tilting the head and leaning forward.
b)
sitting with a straight back, supported by a backrest, and placing thighs parallel to the floor.
c)
holding elbows well out and away from the body.
d)
Keeping an eye level about 6 inches below the dentist’s.
36.
Optimal operator positioning includes
a)
working in a neutral position.
b)
standing for better visualization of the oral cavity of the patient.
c)
leaning forward or to one side when necessary.
d)
knees together.
37.
Ergonomic chairside suggestions include
a)
avoiding prolonged, awkward positions.
b)
increasing repetitions.
c)
forceful movements.
d)
remaining in one position for as long as possible.
38.
Periodic stretching and strengthening of the muscles that support the back, neck, forearms, wrists, and hands will help keep them strong and healthy.
a)
True
b)
False
39.
Eyestrain is caused by not focusing intensely at one depth for long enough periods during dental procedures.
a)
True
b)
False
40.
The type of plaque that develops inside DUWLs, consisting of bacterial cells and other microbes, is called
a)
the infective layer.
b)
microfilm.
c)
biofilm.
d)
slime.
41.
The advantages of self-contained water reservoirs include which of the following?
a)
They are less expensive to use than tap water from the delivery unit.
b)
Dental personnel can select the quality of water used.
c)
Use of sterile water in the reservoir guarantees delivery of sterile water to the patient.
d)
The quality of water will contain fewer than 500 CFU/mL regardless of maintenance.
42.
To reduce the microbial count temporarily and to help clean the handpiece waterlines, DUWLs should be flushed
a)
at the beginning of the day for 2 minutes and for 20 to 30 seconds between patients.
b)
at the beginning of the day for several minutes but not between patients.
c)
for 20 to 30 seconds between patients but not at the beginning of the day.
d)
only after the water has been allowed to become stagnant, such as over a weekend.
43.
Flushing the dental unit waterlines (DUWLs) for 2 minutes at the beginning of the treatment day and for 20 to 30 seconds between patients will help to
a)
reduce prep time between dental patients.
b)
reduce the microbial count of bacteria in the dental unit waterlines.
c)
eliminate bacterial biofilm from the dental unit waterlines.
d)
clean the dental unit water that is used for surgery involving exposure of bone.
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