National Entry Level Dental Assistant (NELDA) 1 Practice Test

These questions are part of the practice quiz. Start practicing

• Which is a typical OSHA requirement for the exposure control plan?
• Which muscle raises the shoulder blade?
• OSHA requirements for PPE: How often must clinical gowns be changed?
• The opening between the two arches of the soft palate refers to the?
• Aids used in mounting x-rays are called?
• What is a benefit of using dual film packets?
• Which blood component acts as the medium for transporting nutrients, hormones, and waste products?
• The speed of film is determined by?
• The network that coordinates gut activity is known as which nervous system?
• The liquid part of the blood refers to?
• The tongue's appearance is based on the existence of which structures?
• Which of the following represents the meaning of COALESCE as the cusps creates the enamel covering for a tooth?
• Which surfaces should be cleaned with a damp sponge after each use to maintain processing area hygiene?
• What must be in the solution used to remove debris from surfaces that need to be disinfected?
• Film processing maintenance requires that surfaces of the tanks and countertops should be cleaned with a damp sponge when?
• What oral structure on the palate forms ridges and contributes to its texture?
• A radiograph with high resolution is?
• Which tissue influences the visible portion of a tooth, thus affecting the clinical crown position?
• What size film is used when taking occlusals?
• The amount of tooth visible in the mouth is influenced by changes in which tissue?
• Which tissue’s recession or enlargement can modify the clinical crown’s position to be more or less visible?
• OSHA gown change guideline: Which statement is true?
• Which of the following affects how long processing solutions last?
• Which vaccine is used to prevent hepatitis B, a common blood-borne pathogen?
• Which papilla does not have taste receptors?
• Which waste type is defined as infectious medical waste requiring special handling?
• If enamel is translucent, what does translucent mean?
• Which technology is used in digital imaging processing systems?
• OSHA requires MSDS information to include which of the following?
• MSDS stands for
• A clinical crown's position changes because of what tissue?
• Which statement about the computer used for digital imaging is true?
• What is the effect of using emollients?
• What course of action should an employee take if proper infection control precautions are not met?
• Two separate teeth created from a single tooth bud refers to which term?
• The rough texture of the tongue is produced by the presence of which structures?
• What function does potassium alum serve in film processing?
• Film speed is not determined by?
• Which structure senses bitter taste?
• Which structure runs along the midline of the hard palate?
• In dental terminology, coalescing means to
• What should you do for a nervous patient?
• What type of marrow stores fat and reduces hematopoietic activity?
• Which of the following is NOT a required component of the exposure control plan, according the OSHA?
• Which of the following is an engineering control in a clinical setting?
• The rollers in automatic processors should be cleaned weekly for how long?
• In the sterilization workflow, which step occurs after the sterilization cycle is complete?
• Which action can prevent contaminating the surfaces in a dental operatory?
• The lining mucosa is most likely found in which area?
• The thyrocervical collar is positioned to cover the?
• A radiograph shows a second image of the same area. This most likely indicates what?
• The pathways of the circulatory system includes?
• The natural loss of primary teeth to allow eruption of permanent teeth is called what?
• Which way do x-rays travel?
• When explaining crown visibility to patients, which tissue should be identified as the factor altering crown position?
• Which item is NOT considered biohazardous waste in dentistry?
• When comparing maxillary molars to mandibular molars, which is true?
• Which of the following is NOT a historical finding that indicates the need for radiography?
• Where is the submucosa located in relation to the mucosa?
• Distortion on a panoramic radiograph can occur if the patient does what during exposure?
• In a dental office, packs are sterilized in which instrument-processing area?
• MSDS information required by OSHA includes what?
• A division of the dentition into six equal parts is called a what?
• Local anesthesia is injected in which site of the hard palate?
• Gingiva is attached to the underlying what?
• The rib cage encloses the?
• For Hep B exposure, which statement is accurate regarding timing of a blood draw?
• Which PPE is specifically intended to maintain sterility during surgical dental procedures?
• What formal process must be completed before a dental procedure when risk information has been shared?
• The parietal bone is a paired bone located in which region?
• Which practice would minimize contact with sharp instruments?
• What is the anatomical term for the narrow passage behind the oral cavity formed by the arches and tongue?
• Why does digital radiography generally require less radiation than conventional radiography?
• In the development process of an automatic processor, what is the effect of increasing the development temperature?
• A patient moved while Susan was taking the radiograph. Susan is now concerned the image will be?
• Which item will not require surface cleaning?
• Which of the following items is not typically included in radiograph labeling?
• Which of the following is an example of PPE?
• How many permanent molars are present in each quadrant of the dental arches?
• A film has streaks and scratches after being processed. What is the cause?
• How much should exposure time for children be reduced in intraoral radiography?
• Which area is designated for sterilized items to help maintain sterility?
• In standard mounting, which way should the raised dot be oriented on PERIAPICAL radiographs?
• Which form of saliva is thick and made of carbohydrates?
• Which cranial nerve is associated with bitter taste sensation?
• H317 hazard means?
• What is another name for the mature cementum?
• In the cassette system, which action is performed outside the cassette?
• The uvula extends from which structure?
• Approximately how much saliva is produced daily in the oral cavity?
• What feature does digital imaging have that traditional radiography lacks?
• A root on a tooth divided into imaginary thirds is done how?
• Which waste type is defined as 'waste capable of causing an infectious disease'?
• Disinfectant without tuberculocidal is NOT useful for which microorganisms?
• A tissue that lies within primary dental beam and is very radiosensitive is the?
• Why does the masticatory mucosa not move?
• The paired bone located in the skull region is which bone?
• When the radiographer has finished duplicating the desired patient film, what do they do with the original mounted image?
• If gingival recession exposes more of the tooth, the clinical crown appears longer. Which tissue's change causes this?
• When hands are not visibly soiled, dental health workers should rub with cleanser for how long?
• Where can potassium alum be found?
• Which term describes a radiographic image that clearly distinguishes small details?
• Which hazard statement corresponds to a potential allergic skin reaction?
• The size of film used for occlusal radiographs is which of the following?
• The visible portion of a tooth (the clinical crown) can change in size due to changes in which tissue?
• How many cranial nerves lead to the brain?
• Which intraoral radiograph would you use on a patient who needs oral surgery?
• After age 12, most primary teeth have what?
• Which technique is older than the paralleling technique?
• Which route is most associated with hepatitis B transmission in healthcare settings?
• Surface cleaning prevents the transmission of infection caused by what direct action?
• Although infectious agents are present at this stage, they are less in number or not as effective?
• In radiography, a high-resolution image is described as being what?
• Disposal facial masks cannot protect wearers against tuberculosis because?
• Which papilla on the tongue is most associated with housing taste receptors and is commonly discussed in relation to taste perception alongside other papillae?
• Lasers and computer systems are used in?
• The purpose of surface cleaning in the operatory is to prevent infection from what action?
• Stored utensils should be kept away from which of the following?
• Which statement about infectious waste disposal is true?
• Vertical bitewing radiographs are recommended over horizontal bitewing radiographs when?
• Which statement describes the convalescent stage?
• In the context of spore testing, which statement best describes its purpose?
• A herringbone pattern on low density film is caused by?
• Which division of the skeleton has 80 bones located in the skull region?
• Which statement best describes factors affecting how long processing solutions last?
• After communicating possible consequences to a patient, what must happen before a dental procedure?
• Which color on a hazardous chemical label is used to indicate health hazard?
• How long should a patient wait before rinsing after oral surgery?
• One-sixty of the dentition is called what?
• A radiograph that is too light is most likely an example of what?
• Which requirement calls for soliciting information from non-managerial employees?
• Mumps primarily targets which salivary gland?
• X-rays travel in a straight line. Which option best reflects this?
• H315 hazard statement means?
• What pattern on a radiograph indicates the film was placed backwards in the mouth?
• Which term best describes the mature cementum?
• Deglutition refers to which action?
• The brain contains approximately how many neurons?
• In the workflow, the original mounted radiograph should be placed where after duplicating the desired image?
• Which statement about masks and TB prevention is true?
• When a patient looks at the technician during a panoramic radiograph, what will the image show?
• The tapering of the mandibular central incisor's crown is shown at the
• Dysplastic cells refer to?
• Which item is used to take a panoramic radiograph?
• Which type of mucosa lines the inside of the cheeks and lips?
• If a safelight filter is used, prolonged exposure can cause what?
• What happens when yellow bone marrow builds up fat?
• Engineering controls can apply to what?
• In esthetic dentistry, crown visibility is affected by changes in which tissue?
• With buccolingual division, the crown is sectioned how?
• A device that intercepts the x-ray beam after it has passed through the patient's body and produces an image in digital form is called?
• When using a visible light-cured unit, what should dental personnel wear to minimize retinal damage?
• A pulp polyp most often emerges in which teeth?
• Which soft tissue surrounding the teeth can alter the apparent position of the clinical crown?
• A herringbone pattern on a low-density film indicates which error?
• Which cardiovascular disease is linked to oral health and dental procedures and would require additional patient education?
• Local anesthesia in the palate for anterior maxillary teeth commonly targets which landmark?
• What is the best way to prevent fingerprints on film?
• One of the major functions of the circulatory system is to?
• Dysplasia in cellular terms is best described as
• What does the number 1 in the yellow section of the chemical hazard label represent?
• The oldest intraoral radiographic technique is the?
• The clinical crown is the portion of the tooth visible in the mouth. Its position is affected by which soft tissue?
• What is step three when it comes to assessing for risk of infection?
• How long does it take for microbes from the water supply to cling to tubes?
• Which color on a hazardous chemical label indicates flammability?
• For a patient needing oral surgery, which intraoral radiograph provides the best view of tooth roots and surrounding bone?
• Which soft tissue surrounding a tooth can influence the clinical crown's position when it changes?
• Which of the following is a type of oral mucosa found in the oral cavity?
• Which tissue is highly radiosensitive and lies within the primary beam?
• External chemical monitoring should be placed on?
• To prevent cross contamination during replenishment of processing solutions, radiograph personnel should?
• Film recover slots are used for which type of film processing?
• A chemical that requires goggles will have which color on the warning label?
• Concrescence describes which phenomenon?
• In orthodontic assessment, crown visibility is linked to changes in which tissue?
• What will static electricity cause on a panoramic image?
• When assessing the risk for infection in dentistry, which would be the final step in the process?
• Which developmental stage is associated with the origin of the tooth?
• The oldest intraoral radiographic technique is?
• It is important to understand the label for a hazardous chemical. Red means?
• What standard information needs to be included when labeling a patient's radiographs?
• How many seconds should you allow between films when feeding them into the processor?
• Which radiographic image reveals a wider view of the entire mandible or maxilla?
• A root being divided into imaginary thirds is done in which orientation?
• What is NOT true of patients who do not have teeth?
• The time for microbes from the water supply to cling to tubes is expressed in what unit?
• The buccolingual division of a crown results in which orientation?
• Film speed is determined by which characteristic?
• Blood is carried to the heart through a collecting system called?
• In one automatic processor, the manufacturer states the temperature and time in the developer are inversely related. This means what?
• Radiographic images which provide a wider view of the entire mandible or maxilla are known as which?
• Processing chemicals should be stored at temperatures of?
• The appearance of the clinical crown can be altered by changes in which soft tissue around teeth?
• What does OSHA require employers to offer free to employees exposed to blood or other potentially infectious materials?
• A film that is too light is the result of?
• A clinician notes a change in crown visibility across patients; the most likely tissue involved is which?
• How is Hep B transmitted from person to person?
• Which tissue's condition can influence the contour of the gingival margin and thus crown visibility?
• How long would a dry heat sterilizer at 340 degrees F typically take to sterilize instruments?
• Why does digital radiography require less radiation than conventional radiography?
• Which agency mandates offering the Hepatitis B vaccination to exposed employees?
• Pulp polyp most often emerges in the primary dentition.
• Besides plastic, what is a useful barrier for light switches?
• At what temperature range should processing chemicals be stored?
• Which of the following is NOT biohazardous medical waste generally associated with dentistry?
• A temporomandibular disorder patient is most likely to show which symptom?
• The central nervous system communicates through which structure?
• Which action helps prevent surface contamination during dental procedures?
• Which virus targets the parotid gland?
• Long exposure time for dental x-ray film results in?
• Which finding is observed with erosion in the oral region?
• Which of the following will NOT break the link between the infectious agent and the reservoir?
• The tooth's pulp plays a role in which of the following aspects of tooth structure?
• Potassium alum is typically found in which component of the film processing chemicals?
• One problem with disposal face masks when they get wet is that they?
• Concrescence involves fusion of two teeth by which structure?
• Transient microorganisms include?
• What is the maximum noise level of the work environment to prevent hearing loss?
• With erosion, which description applies to the cheek area?
• Which waste type is defined as Infectious medical waste that requires special handling, neutralization, and disposal?
• What will the dental assistant do with a spore test in the packaging area?
• When using a size 2 receptor for anterior placements with the bisecting technique, which radiograph would be exposed first?
• A patient with a heart murmur has an increased risk of developing which of the following?
• The process that leads to tooth formation is known as what?
• How many film sizes are available for bitewing radiographs?
• Which organism is used as an example of a microorganism not controlled by non-tuberculocidal disinfectants?
• A double image on a processed radiograph indicates which of the following?
• When removing shoes after a procedure, which precaution is taken?
• Which structure is a feature of the hard palate?
• In pediatric intraoral radiography, exposure time should be reduced by approximately what fraction?
• Premolars help with aesthetics by preventing what?
• Which statement about masticatory mucosa is true?
• It is suspected that a dental assistant has been exposed to Hep B. According to OSHA, what is the maximum amount of time she has to undergo a blood draw to confirm or refute this?
• The gloves used during surgical procedures involving bone or periodontium are called?
• In the cassette instrument sterilizing system, the instrument is kept in the cassette during all steps except?
• Light images with a herringbone pattern indicate which of the following?