RHS® Practice Test | 223 Questions with 100% Correct Answers

RHS® Practice Test

Dental healthcare personnel who are pregnant can expose radiographs during the -

✔✔entire pregnancy

Patients receive less radiation when using a/an - ✔✔rectangular PID

Leakage radiation is defined as any radiation that is - ✔✔received from primary beam

In dental radiography, the purpose of the fixer solution is to - ✔✔remove unexposed

silver halide crystals.

Which of the following may cause unnecessary radiation exposure to the patient? -

✔✔Radiograph technique errors

Which of the following landmarks is useful when mounting films in the maxillary central

area? - ✔✔Anterior nasal spine

The position-indicating device (PID) shape that most effectively reduces patient

exposure to radiation is - ✔✔rectangular.

How frequently should processing solutions be replenished? - ✔✔daily

Storing unexposed radiographic film in high humidity conditions may cause - ✔✔film fog

A cephalometric radiograph is PRIMARILY used to evaluate - ✔✔lateral jaw

development.

For x-ray machines operating in ranges at or below 70 kVp, the total aluminum

equivalent filtration must be a minimum of - ✔✔1.5mm

Which of the following describes a double-ended film holder used for posterior and

anterior teeth? - ✔✔Eezee-Grip®

The optimum developing solution temperature for manual processing is - ✔✔68 degrees

F

The American Dental Association recommends that radiographs be mounted with the

embossed dots - ✔✔: all facing in the same direction.

Duplicating film is coated with - ✔✔one-sided emulsion.

Which of the following tissues is the most highly radiosensitive? - ✔✔skin

Which of the following can be observed on a panoramic radiograph when the patient's

chin is tipped downward? - ✔✔Exaggerated smile

During the processing of x-ray film, the removal of the halide portion of the exposed

silver crystals is called - ✔✔reduction.

During patient exposure, protection from radiation for the dental assistant includes -

✔✔standing behind a wall.

To maintain quality assurance while processing films, dental assistant should record -

✔✔the date solutions were changed.

The Frankfort Plane is an imaginary plane passing through the - ✔✔external auditory

meatus to the floor of the orbit.

Most bilateral findings in radiographs are considered - ✔✔normal anatomic landmarks.

The diameter of the cone-shaped beam produced from a circular collimator is - ✔✔2.75

inches

Which of the following cells exposed to radiation may be associated with leukemia? -

✔✔somatic

Radiation injury results from - ✔✔exposure

The most important step the dentist can take in protecting patients from x-radiation is to

- ✔✔properly prescribe radiographs.

How often should step wedge quality control tests for a dental x-ray machine be

conducted? - ✔✔daily

Maximum wattage for a safelight bulb should be - ✔✔15