RHS Exam Study Guide Questions and Answers Graded A

RHS Exam Study Guide Questions and Answers Graded A Which is a measurement of tissue damage from x-ray energy? Radiation absorbed dose To help desensitize the tissue prior to fil placement, the dental assistant should do what? Rub a finger along the tissues where the film touches. What is the primary function of collimation? To restrict the size of the beam. Added filtration in the x-ray tubehead protects what? The Patient. To prevent cross-contamination, wipe the counter top with what? An EPA-approved disinfectant. Patients receive less radiation when using which: A round PID, External PID or Rectangular PID? Rectangular PID. Which of these radiographic errors is caused by removing a film too quickly from a tightly packed box? Reticulation, Cone Cut or Static Electricity? Static Electricity. Paralleling technique require the film to be place how? Away from the tooth, towards the middle of the oral cavity. When using a 16- inch PID compared to an 8-inch PID, should you increase or decrease the exposure time? Increase the exposure time. What is the optimal temperature of the developer in automatic processing? 80-95 Degrees F What is duplicating film coated with? One-sided emulsion Which of the following is a disposable intraoral x-ray film holder device: Rinn XCP, Stabe or EeZee Grip? Stabe What is the most common radiographic exposure used to evaluate a dental implant on an adult? Periapical What error may cause film fogging? Using expired film. Leakage radiation is defined as any radiation that it from the primary beam or the secondary beam? From the primary beam. What is the maximum permissible does (MPD) of ionizing radiation for occupational exposure 5.0 rem per year What size film is the most effective when places vertically, in the anterior region, to evaluare caries and periodontal health? Size 4 Radiation injury can be measured by dose rate, somatic dose or kvp? Dose rate ALARA is primarily concerned with what kind of radiation? artificial radiation Black-scatter radiation to the film is prevented by what? the lead foil What is the first step in processing radiographic film- rinsing, drying, fixing or developing? Developing On a full mouth series with 18 films, how many anterior films are exposed? 6 What prevents x-rays from escaping the tubehead? Leaded glass housing Which of the following is a double-ended film holder that is used on posterior and anterior teeth- Stabe, Ednoray, or Eezee Grip? Eezee Grip The American Dental Association recommends that radiographs be mounted with the embossed dots going which way? All facing in the same direction What is the best way to prevent cross-contamination from an exposed film packet? Use individual barrier envelopes The amount of radiation and exposure time needed to produce a diagnostic radiograph is best determined by what? Film Speed What would cause a double image in a radiograph? Exposing the same film twice What may cause film fogging? Using expired film. The time between patient exposure ato radiation and the appearance of biological damage is called _______. The latent period Who does added filtration in the x-ray tubehead protect? The patient What is the most effective method of reducing patient exposure to x-radiation? Fast film The purpose of intensifying the screens is to ______. Decrease the amount of radiation.