DANB RHS

Which is a measurement of tissue damage from x-ray energy? Correct Answer: Radiation absorbed dose To help desensitize the tissue prior to fil placement, the dental assistant should do what? Correct Answer: Rub a finger along the tissues where the film touches. What is the primary function of collimation? Correct Answer: To restrict the size of the beam. Added filtration in the x-ray tubehead protects what? Correct Answer: The Patient. To prevent cross-contamination, wipe the cou...

The circulatory system caries life-sustaining substances such as nutrients and oxygen throughout the body. Correct Answer: true Anatomy means the study of body structure Correct Answer: true Physiology is the study of how the body functions Correct Answer: true The sagittal plane divides the body into upper and lower sections Correct Answer: false The frontal plane divides the body into left and right halves. Correct Answer: false The dorsal cavity is in the anterior portion ...

How frequently should processing solutions be changed? Correct Answer: Daily. The optimum developing solution temperature for manual processing is... Correct Answer: 68 degrees F. Emulsion damage to a film is caused by Correct Answer: Improper handling of the film. How often should step wedge quality control tests for a dental x-ray machine be conducted? Correct Answer: Daily. The American Dental Association recommends that radiographs be mounted with embossed dots... Correct Ans...

The annual maximum accumulated dose (MAD) of radiation for dental assistant is based on which of the following calculations? Correct Answer: Age minus 18 times 5 rems/year. The population most susceptible to radiation damage is Correct Answer: Infants. Cells most suspectable to radiation damage are Correct Answer: Bone marrow. The main purpose of using a lead apron with a thyroid collar when exposing dental radiographs is to protect the patient from Correct Answer: Scatter radiation...

How do you adjust the kVp for edentulous Correct Answer: Reduce by 1/2, 1/4 or increase by 1/2, 1/4 Advantages of Digital Correct Answer: No film or processing solution, less exposure to pt Processing Error: Black Lines Correct Answer: Rollers Processing Error: Black Spots Correct Answer: Developer Processing Error: White Spots Correct Answer: Fixer Why is there Lead Backing in film? Correct Answer: to protect Pt and reduce film fog If film is clear, what would NOT be a p...

the American dental association recommends that radiographs be mounted with the embossed dots Correct Answer: all facing the same direction Radiolucent Correct Answer: the dark or black portions of the image; result from the passage of energies through less dense areas (pulp, caries, foramen) Bisecting angle technique Correct Answer: Film is placed close to teeth, central ray is aimed at imaginary line between teeth & film to view an abscess on tooth #25 the best radiographic expose ...

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 Correct Answer: b. Periapical x-ray A bitewing radiograph is useful for diagnosing all of the following EXCEPT: a. Impacted tooth b. Tooth decay c. Periodontal bone loss d. Gum disease Correct Answer: a. Impacted tooth A full-mouth survey generally includes: a. 14 periapical views and 4-6 bitewings b. 10 pe...

Phosphor plates are processed by using? Correct Answer: Laser beam technology When using a 16-inch PID compared to an 8-inch PID the exposure time must Correct Answer: to be increased On a full mouth series with eighteen films, how many anterior films are exposed? Correct Answer: 6 Which of the following radiographic errors is caused by removing a film too quickly from a tightly packed box? Correct Answer: Static electricity Which of the following radiolucencies may be mistaken f...

Chemical agents should be properly disposed of according to A. dental office protocol. B. state and federal recommendations. C. OSHA and local laws. D. federal, state and local laws. Correct Answer: D. federal, state and local laws. Using the ALARA concept as a guideline for radiographs includes all of the following EXCEPT A. draping the patient with a thyroid collar. B. using a circular PID. C. draping the patient with a lead apron. D. using a rectangular PID. Correct Answ...

What are the advantages of Digital Imaging? Correct Answer: No film or processing solution, less exposure to the patient The anterior wall of the sinus and lateral wall of the nose form; Correct Answer: Inverted Y As the target to film distance is increased, Will there be more or less distortion? Correct Answer: Less The basic unit for measuring ionizing radiation exposure in the air known as Correct Answer: Roentgen What is the best film to view lingual or buccal caries? Correct...