DANB CDA – GC: Chairside Dentistry — All Questions

Which matrix system is most commonly used for Class II amalgam restorations?

A patient is scheduled for a Class III composite restoration on tooth #8. Which of the following should the dental assistant prepare for the matrix?

During a Class II composite restoration, the dentist notices the composite is not curing properly at the gingival floor of the proximal box. Which factor is most likely responsible?

What is the purpose of placing a wedge when using a matrix band for a Class II restoration?

Which type of dental prosthesis replaces all teeth in one arch?

A patient returns for the cementation of a porcelain-fused-to-metal (PFM) crown. Which cement would the dental assistant most likely prepare?

When assisting with a crown preparation, what is the correct sequence for taking a final impression?

What instrument is used to measure the length of a root canal during endodontic treatment?

During a root canal procedure, the dentist asks for irrigation. Which solution should the dental assistant have ready?

What material is most commonly used to obturate (fill) a root canal after cleaning and shaping?

Which instrument is used to measure periodontal pocket depth?

A patient presents with red, swollen, bleeding gingiva and probing depths of 2 to 3 mm. The dental assistant documents these findings. What is the most likely periodontal classification?

What is the primary purpose of a periodontal dressing after surgical treatment?

Which forceps are used for the extraction of maxillary anterior teeth?

After a surgical extraction, the patient is given post-operative instructions. Which instruction is appropriate for the dental assistant to reinforce?

A patient calls the office 3 days after an extraction complaining of severe throbbing pain, a bad taste, and an empty-looking socket. Which post-surgical complication should the dental assistant suspect?

What is the purpose of a separator (spacer) placed between teeth before orthodontic banding?

A patient with fixed orthodontic appliances reports a broken bracket on a premolar. What should the dental assistant prepare for the appointment?

Which plier is used to cut an orthodontic archwire?

At what age do the first primary teeth typically begin to erupt?

A 4-year-old child is anxious and refuses to sit in the dental chair. Which behavior management technique is most appropriate for the dental assistant to use?

How many primary teeth are in a complete primary dentition?

Which intraoral radiograph is best for evaluating the periapical region of a specific tooth?

The dentist requests a radiograph to check for interproximal caries on the posterior teeth. Which type of radiograph should the dental assistant prepare to expose?

What size film or sensor is typically used for periapical radiographs on adult posterior teeth?

Which hand instrument is used to detect caries, calculus, and other irregularities on tooth surfaces?

What is the function of a spoon excavator in restorative dentistry?

The dentist asks for an instrument to carve the occlusal anatomy of a freshly placed amalgam restoration. Which instrument should the dental assistant transfer?

In four-handed dentistry, where is the dental assistant typically positioned relative to the patient?

During a procedure, the dentist signals for an instrument transfer. Using the single-handed transfer technique, in which hand does the dental assistant hold the instrument to be delivered?

What is the transfer zone in four-handed dentistry?

In the Universal Numbering System, which tooth is the maxillary right third molar?

During a clinical examination, the dentist calls out ‘MOD composite on tooth #30.’ What surfaces are involved?

What color is traditionally used to chart existing restorations on a dental chart?

What is the primary purpose of using a dental dam during a restorative procedure?

When placing a dental dam for a Class II restoration on tooth #19, which tooth should the most distal clamp be placed on?

Which instrument is used to punch holes in the dental dam material?

Which impression material is classified as irreversible hydrocolloid?

After taking an alginate impression, the dental assistant notices the impression has a grainy, chalky texture and tore when removed from the mouth. What is the most likely cause?

Which type of gypsum product is most commonly used to pour a diagnostic study model?

What is the purpose of placing a calcium hydroxide liner in a deep cavity preparation?

The dentist has completed a crown preparation and needs to place a temporary crown. Which cement should the dental assistant prepare for temporary cementation?

Which dental cement releases fluoride and chemically bonds to tooth structure?

What is the correct order of instruments on a basic examination tray setup?

After a procedure, the dental assistant begins breaking down the operatory. What should be done with the contaminated instruments first?

Which of the following items is typically included on an amalgam restorative tray setup but NOT on a composite restorative tray setup?

A Safety Data Sheet (SDS) is required for all hazardous chemicals in a workplace under OSHA regulations. Which section of the SDS provides information about recommended firefighting measures and suitable extinguishing media?

CHEMTREC (Chemical Transportation Emergency Center) provides what type of assistance to emergency responders at a hazardous materials incident?

At a hazmat incident, the incident commander informs EMS that the atmosphere contains a known chemical with an identified concentration. The hazmat team determines an air-purifying respirator (APR) with appropriate cartridges will provide adequate respiratory protection. What level of PPE does this describe?

A paramedic crew responds to a mass casualty incident at a subway station where multiple patients present with cherry-red skin coloration, altered mental status, headache, and seizures. After ensuring scene safety and decontamination, which antidote should be administered?

Multiple patients from an office building present with sudden onset of fever, nonproductive cough, widened mediastinum on hospital imaging, and hemorrhagic pleural effusions. Public health officials suspect a biological agent attack. Which biological agent is most consistent with this presentation?

Which items are typically included on an impression tray setup for a final impression?

A patient in the dental chair begins experiencing symptoms of an allergic reaction, and the dentist calls for the emergency kit. Where should the dental assistant locate the emergency tray or kit?

An anesthetic tray setup for the dentist to administer local anesthesia should include which of the following?

A dental assistant reviews the day’s schedule and sees back-to-back appointments: a composite restoration at 9:00 AM, an extraction at 9:45 AM, and a prophylaxis at 10:30 AM. To maximize efficiency, how should the assistant plan tray setups?

After dismissing a patient from a restorative procedure, the dental assistant removes the used tray from the treatment area. What should be done with the contaminated instruments on the tray?

When organizing instruments on a procedure tray, what is the standard arrangement principle?

The dentist asks the dental assistant to set up for an amalgam restoration on tooth #3. In addition to the basic setup, which procedure-specific instruments should be on the tray?

During cleanup after a surgical extraction, the dental assistant finds a used suture needle on the tray, blood-soaked gauze in the patient’s lap, and an empty anesthetic carpule on the bracket tray. How should each item be disposed of?

After removing contaminated barriers from the dental chair, light handles, and air/water syringe at the end of a procedure, what should the dental assistant do before placing new barriers?

A dental procedure has just been completed, and the dentist indicates the patient is ready to be dismissed. Which of the following should the dental assistant do before escorting the patient from the operatory?

How many teeth are in the complete primary (deciduous) dentition?

At approximately what age do the first primary teeth typically begin to erupt?

What term describes the natural process by which primary teeth are shed to make way for permanent teeth?

A dental assistant is preparing materials for a sealant application on a 7 year old patient’s newly erupted first permanent molars. Which surface of the tooth is the sealant placed on?

Which type of fluoride application involves painting a concentrated fluoride product directly onto the tooth surfaces of a pediatric patient?

A pediatric patient requires a full coverage restoration on a severely decayed primary molar. Which type of restoration is most commonly used for this purpose?

What is a pulpotomy?

A 5 year old patient has lost a primary second molar prematurely due to extensive decay. The dentist recommends placing a device to prevent drifting of adjacent teeth. What is this device called?

During a pediatric dental procedure, the dentist plans to use nitrous oxide sedation. Which of the following is the dental assistant’s responsibility during nitrous oxide administration?

A dental assistant notices unexplained bruising on a pediatric patient’s arms and face during a routine appointment. The bruises appear to be at different stages of healing. What is the dental assistant’s legal obligation?

What characterizes the mixed dentition stage in a child’s dental development?

What are natal teeth?

A parent asks the dental assistant for advice about their toddler’s persistent thumb sucking habit. Which response is most appropriate?

Tongue thrust is an oral habit that involves which of the following?

Early childhood caries (ECC) is most commonly associated with which of the following practices?

A parent brings a 2 year old child to the dental office with extensive decay on the maxillary anterior teeth. The decay pattern shows dark, cavitated lesions on the labial surfaces of the upper incisors. This presentation is most consistent with which condition?

An 8 year old patient presents with a primary canine that has not exfoliated, and a radiograph shows the permanent canine developing in an ectopic position. The dental assistant is reviewing the chart before the dentist enters. Which observation from the mixed dentition is most relevant for the dentist to address?

When assisting with a fluoride treatment for a pediatric patient, the dental assistant should take which precaution to minimize the risk of fluoride ingestion?

Neonatal teeth are defined as teeth that erupt during which time period?

The dental assistant is preparing the tray for a sealant procedure on a pediatric patient. Which step must occur immediately before the sealant material is applied to the tooth?

What is the purpose of a film holder or sensor holder such as the XCP or Rinn device in intraoral radiography?

When placing a digital sensor for a periapical radiograph of the mandibular premolars, the dental assistant notices the patient is having difficulty tolerating the sensor due to its rigid size. Which of the following is the best course of action?

The XCP instrument system includes three color coded components. Which component directs the position indicator device (PID) to the correct angulation?

A dental assistant is using a Rinn holder to take a periapical radiograph of tooth #14. After placing the sensor in the holder and positioning it in the patient’s mouth, the assistant aligns the PID with the aiming ring. Which radiographic technique is being used?

In the Palmer notation system, how are the four quadrants of the mouth identified?

In the FDI (Federation Dentaire Internationale) numbering system, what does the first digit of a two-digit tooth number represent?

During a dental examination, the dentist instructs the dental assistant to chart a missing tooth #19. Which charting symbol is used to indicate a missing tooth?

How is an impacted tooth typically indicated on an anatomic dental chart?

The dentist notes that tooth #14 has drifted mesially into the space left by a previously extracted tooth #13. How should this be charted?

How is a rotated tooth indicated on a dental chart?

During charting, the dentist identifies caries on the occlusal surface of tooth #30. How should the dental assistant record this finding?

What charting symbol indicates a tooth fracture?

How is a periapical abscess indicated on a dental chart?

What is the difference between anatomic and geometric dental charting?

A new patient arrives and reports pain in the upper right area. The dental assistant should record this information in which section of the dental record?

How many teeth are included in each quadrant of the permanent dentition?

How many sextants are used to divide the dental arches for periodontal charting?

In dental terminology, which teeth are classified as anterior teeth?

The dentist dictates treatment needs during a clinical examination. The dental assistant charts planned restorations in red and existing restorations in blue. A tooth has both an existing DO amalgam and a new occlusal carie. How should this tooth appear on the chart?

A dental assistant reviews a patient’s chart and notices that tooth #3 is marked with an X, tooth #4 has an arrow pointing mesially, and tooth #5 has a red outline on the occlusal surface. What clinical situation do these symbols collectively describe?

When using the FDI numbering system, a patient’s mandibular left first molar in the permanent dentition is identified as which number?

In the Palmer notation system, what number range is used for permanent teeth in each quadrant?

A dental assistant is preparing a patient’s chart for a consultation with an oral surgeon. The chart must clearly communicate the status of all teeth including existing restorations, missing teeth, and pathology. Which charting format would provide the most detailed visual representation?

The dentist examines a patient and identifies periapical pathology at the apex of tooth #8. The dental assistant should chart this finding using which method?

A dental assistant is entering charting data into practice management software. The dentist calls out ‘existing three-unit bridge, teeth 3 through 5, with pontic at 4.’ How should this be recorded on the dental chart?

What is the purpose of a shade guide in restorative and prosthetic dentistry?

In a fixed bridge, what is the term for the artificial tooth that replaces the missing tooth?

What is the function of the abutment teeth in a fixed bridge?

A patient needs a temporary crown on a prepared tooth while the permanent crown is being fabricated by the laboratory. Which material is commonly used to fabricate a chairside provisional restoration?

What is the purpose of a bite registration in prosthodontic procedures?