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DANB RHS EXAM 2024/2025 WITH 100%
ACCURATE SOLUTIONS
The type of radiograph that would show the whole tooth including the crown, roots, and jawline is called? a. bitewing x-ray b. periapical x-ray c. occlusal x-ray d. tomogram - Precise Answer โโb a bitewing radiograph is useful in diagnosing all of the following except: a. impacted tooth b. tooth decay C. periodontal bone loss D. gum disease - Precise Answer โโa a full-mouth survey generally includes: a. 14 periapical views and 4 to 6 bitewings b. 10 periapical views and 8 bitewings c. 14 periapical views and 4-6 bitewings and a panoramic d. 8 periapical views and 4 bitewings - Precise Answer โโa the best radiograph to obtain for diagnosis of temporomandibular joint (TMJ) is: a. panoramic b. periapical c. sialography d. arthrography - Precise Answer โโd
what type of radiograph is used by an orthodontist to assist with treatment planning? a. tomography b. sialogrophy c. cephalometric d. occlusal - Precise Answer โโc which of the following is a true statement regarding the use of lead aprons and thyroid collars? a. the use of lead aprons and thyroid collars will prevent cancer from developing in the thyroid gland b. the apron should cover from the neck to just above the patient's knee c. lead aprons should be cleaned thoroughly and fold it in thirds between patient use d. the thyroid collar is optional for older adults past childbearing years - Precise Answer โโb where is the most appropriate place to store Dental film? a. in a cool, dry closet b. in a refrigerator c. in the treatment room d. near the X-ray machine - Precise Answer โโa a dental assistant experience has an occupational exposure. A patient's blood has splashed into the employees eye. Which of the following is an appropriate step to take? a. immediately draw blood from the patient in order to get it tested for HIV and hbv b. require the employee to have their own blood tested immediately for HIV and hbv c. document the incident, including the source individual, the employee, routes of exposure, and how it happened d. check the patient's chart in determine if risk factors are present to Warrant further testing for the employee - Precise Answer โโc which of the following is false regarding hand-washing? a. alcohol-based hand gel can be used in place of soap and water on hands that are visibly dirty
c. milliamperage selector d. master switch - Precise Answer โโb a reverse smile line observed on a panoramic image is likely due to: a. position of the patient's chin is too high b. position of the patient's chin is too low c. the patient's spine is not straight d. the patient's lips were not close during Imaging - Precise Answer โโa a cone-shaped radiopaque image on a Panoramic X-Ray is likely caused by: a. use of a thyroid collar during Imaging b. earrings c. orthodontic retainer d. tongue piercing - Precise Answer โโa how does the use of photostimulable storage phosphor (PSP) plates affect digital radiography? a. PSP plates are the thickest form of sensor and are the most uncomfortable to the patient b. PSP plates allow for heat sterilization, making infection control easier to manage c. PSP plates provide slightly more radiation exposure to the patient than traditional Dental film d. PSP plates do not offer a media access to the digital image - Precise Answer โโd which of the following is not a disadvantage of digital radiography? a. infection control issues b. lost images c. cost for purchasing Digital Imaging equipment d. training - Precise Answer โโb the use of outdated Dental film may cause an x-ray to have: a. partially missing image
b. white spots on the film c. a foggy or great appearance d. appearance of streaks on final film - Precise Answer โโc which of the following would not be a reason for the dental x-ray image to come out black? a. processing time is too short b. temperature is too warm c. film has been exposed to white light d. damaged Safelight - Precise Answer โโa what will happen to an x-ray film that is left in the processing solution too long? a. there will be white spots on the X-ray b. there will be dark spots on the final image c. the image will be either partially or completely missing d. the X-ray will appear yellowish Brown - Precise Answer โโc a dental x-ray that has the appearance of black lines that look like a tree branch is caused by: a. overlapped films b. static electricity c. overexposure d. air bubbles - Precise Answer โโb what type of chemical is used in the developing agent to convert the silver halide crystals to Black? a. potassium bromide b. sodium sulfate c. acetic acid d. hydroquinone - Precise Answer โโd
d. expired Amalgam capsules - Precise Answer โโb when mounting Dental film, The preferred order is: a. maxillary anterior periapical mandibular anterior periapical bitewing maxillary posterior periapical mandibular posterior periapical b. bitewing maxillary anterior periapical mandibular anterior periapical maxillary posterior periapical mandibular posterior perapical c. maxillary posterior periapical mandibular posterior periapical bitewing maxilar anterior periapical mandibular anterior periapical d. maxillary anterior periapical mandibular anterior periapical maxillary posterior periapical mandibular posterior periapical bitewing - Precise Answer โโa which of the following do not include anatomical landmarks of the mandible? a.lingual foramen, coronid process, ramus b.incisive foramen, mental foramen, genial tuercle c.medial sigmoid notch, symphysis, external oblique notch d. trabecular patterns, alveolar crest, internal oblique - Precise Answer โโb which of the following are not maxillary landmarks? a.hard palate, nasal septum, nasal conchae b.alveolar crest, genial tubercle, coronoid process c.infraorbital foramen, orbit, mastoid process
d. external auditory meatus, malar, glenoid fossa - Precise Answer โโb when identify anatomical structures and dental materials on radiograph, which of the following is true? a. the enamel is radiolucent and located at the crown of the tooth b. the root canals are radiopaque and extend from the pulp chamber to the apex of the tooth c. the periodontal ligament can be visualized as radiopaque d. the dentin is not a radiopaque as enamel - Precise Answer โโd a patient is moving and asks for the most recent x-rays for the new dentist. Which of the following is not the preferred procedure for fulfilling this request? a. often the original x-rays from the patient's record and give them to the patient to take to the new dentist b. prepare a copy of the film's and allow the patient to take these to the dentist c. obtain contact information from the patient and mailed to the new dentist d. obtain an email address for the new dentist and send a digital image electronically - Precise Answer โโa for manual duplication of X-ray films, which of the following condition is incorrect? a. duplication must be completed in the dark room with the safelight b. special duplicating film must be used c. film duplication can be done in the regular office setting without any special conditions d. the duplicating machine produces white light in order to expose the film - Precise Answer โโc characteristics of x-rays include all of the following except: a. x-rays are not visible or apparent to any of the senses b. x-rays travel at half the speed of light c. x-rays travel in a straight line but can easily be deflected d. shoulder x-rays are more useful in Dental radiographs - Precise Answer โโb in what part of the X-ray machine are there x-rays produced?
chronic radiation exposure to the lens of the eye may result in: a. astigmatism b. strabismus c. cataracts d. glaucoma - Precise Answer โโc what is the maximum permissible dose (MPD) of radiation for a dental assistant? a. 5 Rem / year b.0.5 rem/year c.10 rem/year d.50 rem/year - Precise Answer โโa which of the following is considered secondary radiation? a. radiation that goes through the collimator and position-indicating device (PID) b. radiation that reflects off the patient's face c. radiation that leaks from the tubehead d. radiation directed at an area for cancer treatment - Precise Answer โโb which of the following is not an effective way that the "as low as responsible the achievable" (Alara) principle can be achieved in a dental office for the protection of the patient? a. use LED aprons and thyroid colors b. use of D film c. minimize the time of exposure d. use of digital radiographs - Precise Answer โโb what is the proper distance for the operator to stand away from the X-ray beam to minimize exposure? a. 2 feet b. 4 feet
c. 6 feet d. 8 feet - Precise Answer โโc which statement best describes the effects of long-term low-dose radiation exposure? a. the effect of long-term low-dose radiation exposure will cause genetic defects for both men and women in their childbearing years b. the effect of long-term low-dose radiation exposure will cause cancer c. the effect of long-term low-dose radiation exposure can cause changes at the cellular level in the human body that would be observed within two years d. the effect of long-term low-dose radiation exposure can cause changes at the cellular level in the human body that would not be observed for many years - Precise Answer โโd what parts of the X-ray machine functions to remove the most dangerous x-rays from reaching both the patient and the operator? a. aluminum filter b. collimator c. PID d. milliamperage selector - Precise Answer โโa a young patient is having difficulty holding still for x-rays. What is the most appropriate stuff for the dental assistant to take? a. try again next appointment b. ask the parent to have the child sit on his or her lap with both covered by the LED apron c. ask the dentist to hold the child d. stand next to a child can hold a sensor in place until the x-rays are completed - Precise Answer โโb what is the correct way for dental assistant to wear dosimeter? a. only when he/she is taking x-rays b. all day, everyday c. Des during normal business hours for the practice
