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DANB CDA

Certified Dental Assistant National Board Exam

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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?

1. O

2. E

3. O

4. 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 improve 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

   

4. 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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