DANB RHS Exam Study Guide – Radiation Health and Safety Certification Review for Dental Assistants

DANB RHS EXAM - STUDY
GUIDE WITH 100% CORRECT
ANSWERS GRADED A+ 2026
Professor Wilhelm Roentgen



a)advocated radiology in the u.s

b)exposed the first radiographs in the u.s

c)discovered the xray

d)employed the first dental auxiliary in the united states - answer-c



Digital Radiography Utilizes the following approach



a)filmless radiographic computer imaging system

b)electronically charged plated imaging system

c)nonionizing radio frequency imaging system

d) none of the above - answer-a



a form of energy is

a)heat

b)light

c)electricity

d) x-radiation

e) all of the above - answer-e



Photons are described as



a)bundles of energy

, b) dental film mounts

c) electrically neutral particles

d) negatively charged atomic particles - answer-a



Limited Penetration long wavelength radiation is known as



a) short wavelengths

b) hard radiation

c) soft radiation

d) desirable wavelengths - answer-c



Background Radiation originates from:



a)enviornment

b) outerspace

c) radionuclides

d) terrestrail radiation

e) all of the above - answer-e



Ionizing Radiation produces ions when



a) radiation passes through the body tissues

b) ions compress into the atmosphere

c) isotopes flow freely on air

d) none of the above - answer-a



Common Characteristics of radiation are