Latest PDF of DANB: Certified Dental Assistant (CDA) 2025

Certified Dental Assistant (CDA) 2025 Practice Test

DANB exam Format | Course Contents | Course Outline | exam Syllabus | exam Objectives

DANBs exam outlines list the Topics covered on each exam. You can use these outlines to help create your study plan. obtain free outlines by clicking on the links below.

Note: DANBs exams do not correspond directly to any specific textbook or dental assisting program. Instead, they are based on an analysis of the duties commonly performed in genuine dental assisting practice, which is called a content validation study. This study serves as the basis for what DANB calls the exam outline.

National Entry Level Dental Assistant (NELDA) certification
• Anatomy, Morphology and Physiology (AMP)
• Infection Control (ICE)
• Radiation Health and Safety (RHS)

Certified Dental Assistant (CDA) certification
• General Chairside Assisting (GC)
• Radiation Health and Safety (RHS)
• Infection Control (ICE)

Certified Orthodontic Assistant (COA) certification
• Orthodontic Assisting (OA)
• Infection Control (ICE)

Certified Preventive Functions Dental Assistant (CPFDA) certification
• Coronal Polishing (CP)
• Sealants (SE)
• Topical Fluoride (TF)

Certified Restorative Functions Dental Assistant (CRFDA) certification
• Impressions (IM)
• Sealants (SE)
• Temporaries (TMP)
• Restorative Functions (RF)

All DANB exam Outlines
• Anatomy, Morphology and Physiology (AMP)
• Coronal Polishing (CP)
• General Chairside Assisting (GC)
• Infection Control (ICE)
• Impressions (IM)
• Orthodontic Assisting (OA)
• Restorative Functions (RF)
• Radiation Health and Safety (RHS)
• Sealants (SE)
• Topical Fluoride (TF)
• Temporaries (TMP)

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Certified Dental Assistant (CDA) 2025
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Question: 214
Which of the following dental specialties focuses on the alignment and correction of irregularities in the position of the teeth and jaws?
ral and maxillofacial surgery ndodontics
rthodontics edodontics
wer: C
anation: The dental specialty thatfocuses on the alignment and correct egularities in the position of the teeth and jaws is orthodontics. odontists are dental specialists who diagnose, prevent, and treat dental
irregularities, such as misaligned teeth and malocclusions. They use es, aligners, and other orthodontic appliances to gradually move and a eeth and jaws into proper position, improving both function and aesth
stion: 215
ch of the following dental radiographs is used to examine the root tures and surrounding bone of a single tooth?
O
E
O
P
Ans
Expl ion
of irr
Orth and
facial
brac lign
the t etics.
Que
Whi struc
1. Bitewing radiograph
2. Periapical radiograph
3. Panoramic radiograph
4. Occlusal radiograph
Explanation: A periapical radiograph is used to examine the root structures and surrounding bone of a single tooth. It captures the entire tooth, from the crown to the root, and provides detailed information about the tooth's condition, including the presence of infections, abscesses, or bone loss.
Question: 216
is the purpose of a dental dam during dental procedures?
isolate and protect the treatment area clean and disinfect dental instruments provide anesthesia to the patient
assist with tooth extraction procedures wer: A
anation: The purpose of a dental dam is to isolate and protect the treat uring dental procedures. It helps in keeping the area dry and free fro amination, improving visibility and preventing the spread of saliva an
s.
stion: 217
ch of the following dental instruments is used to remove carious denti ng cavity preparation?
What
1. To
2. To
3. To
4. To
Ans
Expl ment
area d m
cont d oral
fluid
Que
Whi n
duri
1. Spoon excavator.
2. Gingival retractor.
3. Condensing pliers.
4. Crown and bridge scissors.
Explanation: A spoon excavator is a dental instrument specifically designed for the removal of carious dentin during cavity preparation. Its spoon-shaped working end allows for effective excavation of decayed tooth structure.
Question: 218
mel due to acid erosion?
ental caries ental fluorosis
entin hypersensitivity ooth abrasion
wer: B
anation: Dental fluorosis is the dental condition characterized by the l oth enamel due to excessive exposure to fluoride during tooth lopment. It can result in white or brown stains on the teeth and, in sev
enamel pitting.
stion: 219
ch of the following dental materials is commonly used for taking bite trations?
Which of the following dental conditions is characterized by the loss of tooth ena
1. D
2. D
3. D
4. T
Ans
Expl oss
of to
deve ere
cases,
Que
Whi regis
1. Alginate
2. Zinc oxide-eugenol
3. Polyvinyl siloxane
4. Glass ionomer
Explanation: Polyvinyl siloxane is a commonly used dental material for taking bite registrations. It is highly accurate, has good dimensional stability, and provides detailed reproduction of occlusal relationships.
Question: 220
A)?
ssisting the dentist during dental procedures aking patient X-rays
dministering local anesthesia erforming dental cleanings
wer: D
anation: Performing dental cleanings is typically not within the scope ice for a Certified Dental Assistant (CDA). CDAs primarily assist de ng dental procedures, take patient X-rays, and may assist in administer
anesthesia under the dentist's supervision.
stion: 221
ch of the following dental instruments is commonly used for removing cted wisdom tooth?
Which of the following is not a primary function of a Certified Dental Assistant (CD
1. A
2. T
3. A
4. P
Ans
Expl of
pract ntists
duri ing
local
Que
Whi an
impa
1. Surgical curette
2. Periosteal elevator
3. Luxator
4. Dental elevator
Explanation: A dental elevator is commonly used for removing an impacted wisdom tooth. Dental elevators are designed to apply controlled forces to luxate and elevate teeth from the socket during extraction procedures. They come in various shapes and sizes to accommodate different tooth positions and access areas.
ch of the following dental materials is commonly used for the fabricati al crowns?
omposite resin
lass ionomer cement orcelain
malgam wer: C
anation: Porcelain is commonly used for the fabrication of dental cro elain crowns are known for their natural appearance and are often use ring teeth in the esthetic zone. They can closely mimic the color and lucency of natural teeth.
stion: 223
Question: 222
Whi on of
dent
1. C
2. G
3. P
4. A
Ans
Expl wns.
Porc d for
resto trans
Que
Which dental specialty focuses on the treatment of gum diseases and conditions?
1. Orthodontics
2. Endodontics
3. Periodontics
4. Prosthodontics Answer: C
stion: 224
ch of the following dental instruments is used to remove sutures after cal procedure?
eriodontal probe. emostat.
caler. xcavator.
wer: B
anation: A hemostat, also known as a surgical forceps, is a dental ument used to remove sutures after a surgical procedure. Its pointed ti ocking mechanism allow for secure grasping and controlled removal o es.
Explanation: Periodontics is the dental specialty that focuses on the prevention, diagnosis, and treatment of gum diseases and conditions. Periodontists specialize in the supporting structures of teeth, such as gums, bone, and connective tissues.
Que
Whi a
surgi
1. P
2. H
3. S
4. E
Ans Expl
instr ps
and l f
sutur
Question: 225
Which of the following dental instruments is used for the removal of calculus and plaque from the teeth?
1. Mouth mirror.
2. Periodontal probe.
3. Scaler.
4. Excavator. Answer: C
stion: 226
ch of the following is a benefit of becoming a Certified Dental Assista A)?
igher salary compared to non-certified dental assistants xemption from continuing education requirements
bility to perform complex dental procedures independently imited job opportunities in the dental field
wer: A
anation: One of the benefits of becoming a Certified Dental Assistant
A) is the potential for a higher salary compared to non-certified dental tants. Certification demonstrates a higher level of knowledge and skill h can result in increased earning potential.
Explanation: A scaler is a dental instrument specifically designed for the removal of calculus and plaque from the teeth. It has a pointed tip and a curved or angled working end that allows for effective scaling of the tooth surfaces.
Que
Whi nt
(CD
1. H
2. E
3. A
4. L
Ans Expl
(CD
assis ,
whic
Question: 227
Which of the following dental specialties focuses on the surgical treatment of diseases, injuries, and defects of the oral and maxillofacial region?
1. Endodontics
2. Orthodontics
3. Oral and maxillofacial surgery
4. Prosthodontics Answer: C
of procedures, including tooth extractions, jaw surgeries, and facial nstructive surgeries.
stion: 228
is the purpose of a dental dam clamp during the placement of a dent
stabilize the dental dam and prevent it from slipping secure the dental dam to the patient's face
protect the patient's lips and cheeks anchor the dental dam to individual teeth
wer: D
anation: The purpose of a dental dam clamp during the placement of a al dam is to anchor the dental dam to individual teeth. It helps to creat seal around the tooth being treated and prevents the dental dam from
Explanation: Oral and maxillofacial surgery is the dental specialty that focuses on the surgical treatment of diseases, injuries, and defects of the oral and maxillofacial region. Oral and maxillofacial surgeons are trained in a wide range
reco
Que
What al
dam?
1. To
2. To
3. To
4. To
Ans Expl
dent e a
tight
sliding or dislodging during the procedure.
Question: 229
Which dental material is commonly used for taking impressions of edentulous (toothless) arches?
1. Alginate
2. Polyvinyl siloxane
3. Zinc oxide-eugenol
4. Dental composite resin Answer: A
es. It is a fast-setting and cost-effective material that provides good de oduction of the oral tissues.
stion: 230
ch dental specialty focuses on the alignment and positioning of teeth a
ndodontics rthodontics eriodontics rosthodontics
wer: B
anation: Orthodontics is the dental specialty that focuses on the align ositioning of teeth and jaws. Orthodontists use braces, aligners, and o ances to correct malocclusions and Strengthen the esthetics and function
Explanation: Alginate is commonly used for taking impressions of edentulous arch tail
repr
Que
Whi nd
jaws?
1. E
2. O
3. P
4. P
Ans
Expl ment
and p ther
appli of
the dentition.
Question: 231
Which of the following dental specialties focuses on the alignment and positioning of teeth and jaws?
1. Endodontics
2. Periodontics
3. Orthodontics
4. Prosthodontics Answer: C
ositioning of teeth and jaws. Orthodontists use braces, aligners, and o odontic appliances to straighten teeth and correct malocclusions (impr
).
stion: 232
ch of the following dental materials is commonly used as a temporary g material and for root canal obturation?
omposite resin malgam
utta-percha orcelain
wer: C
anation: The dental material commonly used as a temporary filling rial and for root canal obturation is gutta-percha. Gutta-percha is a ru
Explanation: Orthodontics is the dental specialty that focuses on the alignment and p ther
orth oper
bites
Que
Whi fillin
1. C
2. A
3. G
4. P
Ans Expl
mate bbery
material derived from the sap of certain trees. It is used in dentistry as a filling material for temporary restorations and for filling and sealing the root canal space during root canal treatment. Gutta-percha provides a good seal and helps prevent reinfection of the root canal system.
Question: 233
Which of the following dental materials is commonly used for indirect restorations, such as crowns, inlays, and onlays?
1. Composite resin
2. Amalgam
3. Porcelain
wer: C
anation: The dental material commonly used for indirect restorations, owns, inlays, and onlays, is porcelain. Porcelain is a ceramic material e fabricated to closely resemble the natural color and translucency of It is highly resistant to staining and provides excellent aesthetics and
bility for long-term dental restorations.
stion: 234
ch of the following dental imaging techniques is commonly used to uate the tooth roots and surrounding bone?
itewing radiographs anoramic radiograph
one beam computed tomography (CBCT) eriapical radiographs
Gutta-percha Ans
Expl such
as cr that
can b teeth. dura
Que
Whi eval
1. B
2. P
3. C
4. P
Answer: D
Explanation: Periapical radiographs are commonly used to evaluate the tooth roots and surrounding bone. Periapical radiographs capture a detailed image of a specific tooth from the crown to the root tip, including the surrounding bone structure. They are useful for detecting dental caries, assessing root canal treatments, evaluating periodontal conditions, and identifying abnormalities in
the tooth roots or supporting bone. Bitewing radiographs are primarily used to detect interproximal caries, panoramic radiographs provide an overview of the entire dentition and surrounding structures, and cone beam computed tomography (CBCT) is a 3D imaging technique used for more complex diagnostic purposes.
Question: 235
ch of the following dental radiographs is used to evaluate the relations een the teeth and the temporomandibular joints?
eriapical radiograph. itewing radiograph. cclusal radiograph. anoramic radiograph.
wer: C
anation: An occlusal radiograph is used to evaluate the relationship een the teeth and the temporomandibular joints. It provides a broad vi
maxillary or mandibular arch and can help identify any abnormalitie ders affecting the joints.
stion: 236
ch zone in the dental operatory is responsible for maintaining aseptic
Whi hip
betw
1. P
2. B
3. O
4. P
Ans Expl
betw ew
of the s or
disor
Que
Whi
conditions and handling instruments?
1. Transfer zone
2. Assistant's zone
3. Operator's zone
4. Disposal zone
Answer: B
Explanation: The Assistant's zone in the dental operatory is responsible for maintaining aseptic conditions and handling instruments. The dental assistant works in this zone to provide support to the dentist during procedures.
Question: 237
ch of the following is a common side effect of prolonged use of antibi
erostomia (dry mouth) alitosis (bad breath) achycardia (rapid heart rate) andidiasis (oral thrush)
wer: D
anation: Candidiasis, also known as oral thrush, is a common side eff onged use of antibiotics. Antibiotics can disrupt the natural balance of oorganisms in the mouth, leading to an overgrowth of Candida fungus evelopment of thrush.
Whi otics?
1. X
2. H
3. T
4. C
Ans
Expl ect of
prol
micr and
the d

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Certified Dental Assistant (CDA) 2025 Practice Test

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