CDC 4Y051 Dental Assistant Course – United States Air
Force (USAF) – Complete Exam Questions and Answers
Study Guide
Introduction:
This document contains comprehensive CDC 4Y051 exam
questions and answers covering Air Force dental assisting
topics, including dental instruments, infection control,
radiology, patient management, prosthodontics, orthodontics,
preventive dentistry, emergency procedures, and dental
materials. It is designed as an exam preparation resource with
practice questions and correct answers across the major
knowledge areas required for the CDC 4Y051 career
development course. The material also includes clinical
procedures, safety protocols, dental laboratory concepts, and
patient care guidelines commonly tested during certification
and advancement examinations.
Exam Questions and Answers
The instrument commonly referred to as a Boley gauge is the -
--- correct precise answer ---vernier caliper
Which type of gauge is available with sharp points for
porcelain and metal, and rounded points for wax and plastic? -
--- correct precise answer ---twanson spring caliper
,Which part of a bur fits into a handpiece? ---- correct precise
answer ---shank
A disadvantage of a carbide bur is that it ---- correct precise
answer ---is brittle and has a tendency to fracture under
pressure
Which numbers identify straight crosscut fissure burs? ----
correct precise answer ---556, 557, 558, 559, and 560
Which bur is best suited for making undercuts in cavity
preparation? ---- correct precise answer ---inverted cone
What is the shape of a #6 finishing bur? ---- correct precise
answer ---Concave, tapered fissure
Which type of bur is available in a wide variety of sizes and
grits? ---- correct precise answer ---diamond
What disk grit type is used on a dental rotary instrument for
gross reduction and contouring? ---- correct precise answer --
-coarse
what do you call an abrasive disk that only has one side
covered with abrasives? ---- correct precise answer ---safe
sided
,To maintain the dental teams seated position, where do you
place objects used during four-handed dental treatment? ----
correct precise answer ---within an arms length
When four-handed dentistry is performed, the ---- correct
precise answer ---provider's hands and eyes remain in the
treatment zone.
When performing four-handed dentistry procedures, a right-
hand provider is between the ---- correct precise answer ---8
and 11 oclock position, and the right handed assistant is
between the 2 and 4 o'clock position
In fourhanded dentistry, instruments and materials are
located in the ---- correct precise answer ---assistants zone
When performing four-handed dentistry, your (the dental
assistants) eye level should be ---- correct precise answer ---4
to 6 inches above the providers eye level
To provide support during four-handed dentistry, position the
curved, movable armrest of the assistants chair ---- correct
precise answer ---in front
In four-handed dentistry, the next instrument in the working
stage is held ---- correct precise answer ---close to the
treatment area and parallel to the instrument being used
, In four-handed dentistry, how should you position the
working end of the instrument you are passing to the provider?
---- correct precise answer ---toward the treatment site
Instruments becoming tangled during the instrument
exchange are usually caused by ---- correct precise answer ---
parallel the handles before the exchange
The proper sequence for assembling the aspirating syringe is
to ---- correct precise answer ---insert the carpule with the
rubber stopper end in first, positioned toward the plunger,
then attach the needle and engage the piston rod
The disassembly sequence for the aspirating syringe is to ----
correct precise answer ---disengage the harpoon, remove the
cartridge, and remove the needle
Which of the following is used for irrigation during routine
dental restorative procedure? ---- correct precise answer ---
water or water spray form the dental units 3way syringe
To remove a large volume of fluid from an oral cavity without
exerting injurious action pressure to oral soft tissue, you
would use ---- correct precise answer ---a high volume
evacuator
Force (USAF) – Complete Exam Questions and Answers
Study Guide
Introduction:
This document contains comprehensive CDC 4Y051 exam
questions and answers covering Air Force dental assisting
topics, including dental instruments, infection control,
radiology, patient management, prosthodontics, orthodontics,
preventive dentistry, emergency procedures, and dental
materials. It is designed as an exam preparation resource with
practice questions and correct answers across the major
knowledge areas required for the CDC 4Y051 career
development course. The material also includes clinical
procedures, safety protocols, dental laboratory concepts, and
patient care guidelines commonly tested during certification
and advancement examinations.
Exam Questions and Answers
The instrument commonly referred to as a Boley gauge is the -
--- correct precise answer ---vernier caliper
Which type of gauge is available with sharp points for
porcelain and metal, and rounded points for wax and plastic? -
--- correct precise answer ---twanson spring caliper
,Which part of a bur fits into a handpiece? ---- correct precise
answer ---shank
A disadvantage of a carbide bur is that it ---- correct precise
answer ---is brittle and has a tendency to fracture under
pressure
Which numbers identify straight crosscut fissure burs? ----
correct precise answer ---556, 557, 558, 559, and 560
Which bur is best suited for making undercuts in cavity
preparation? ---- correct precise answer ---inverted cone
What is the shape of a #6 finishing bur? ---- correct precise
answer ---Concave, tapered fissure
Which type of bur is available in a wide variety of sizes and
grits? ---- correct precise answer ---diamond
What disk grit type is used on a dental rotary instrument for
gross reduction and contouring? ---- correct precise answer --
-coarse
what do you call an abrasive disk that only has one side
covered with abrasives? ---- correct precise answer ---safe
sided
,To maintain the dental teams seated position, where do you
place objects used during four-handed dental treatment? ----
correct precise answer ---within an arms length
When four-handed dentistry is performed, the ---- correct
precise answer ---provider's hands and eyes remain in the
treatment zone.
When performing four-handed dentistry procedures, a right-
hand provider is between the ---- correct precise answer ---8
and 11 oclock position, and the right handed assistant is
between the 2 and 4 o'clock position
In fourhanded dentistry, instruments and materials are
located in the ---- correct precise answer ---assistants zone
When performing four-handed dentistry, your (the dental
assistants) eye level should be ---- correct precise answer ---4
to 6 inches above the providers eye level
To provide support during four-handed dentistry, position the
curved, movable armrest of the assistants chair ---- correct
precise answer ---in front
In four-handed dentistry, the next instrument in the working
stage is held ---- correct precise answer ---close to the
treatment area and parallel to the instrument being used
, In four-handed dentistry, how should you position the
working end of the instrument you are passing to the provider?
---- correct precise answer ---toward the treatment site
Instruments becoming tangled during the instrument
exchange are usually caused by ---- correct precise answer ---
parallel the handles before the exchange
The proper sequence for assembling the aspirating syringe is
to ---- correct precise answer ---insert the carpule with the
rubber stopper end in first, positioned toward the plunger,
then attach the needle and engage the piston rod
The disassembly sequence for the aspirating syringe is to ----
correct precise answer ---disengage the harpoon, remove the
cartridge, and remove the needle
Which of the following is used for irrigation during routine
dental restorative procedure? ---- correct precise answer ---
water or water spray form the dental units 3way syringe
To remove a large volume of fluid from an oral cavity without
exerting injurious action pressure to oral soft tissue, you
would use ---- correct precise answer ---a high volume
evacuator
