DANB Radiology (2025) Actual Exam Questions and Answers A+ Graded.

DANB Radiology (2025) Actual Exam
Questions and Answers A+ Graded



What .is .the .base .of .dental .film .composed .of? .- .CORRECT .ANSWER-blue .tinted
.polyester .acetate


What .is .the .emulsion .composed .of? .- .CORRECT .ANSWER-gelatin .and .silver
.halide .crystals


What .determines .the .speed .of .dental .films? .- .CORRECT .ANSWER-size .of
.crystals, .thickness .of .emulsion, .radiosensitive .dyes


What .is .the .purpose .of .the .lead .foil? .- .CORRECT .ANSWER-absorb .scatter
.radiation .and .prevent .fogging


How .does .film .speed .correlate .with .definition .and .detail? .- .CORRECT .ANSWER-
faster .film .= .lower .definition .and .detail

What .speed .films .are .most .commonly .used? .- .CORRECT .ANSWER-D, .E, .F

size .film .used .for .PA's .on .small .children .- .CORRECT .ANSWER-#0

size .film .used .for .BW .on .adults .when .only .one .film .is .taken .on .each .side .-
.CORRECT .ANSWER-#3


size .film .used .for .anterior .PA's .for .patients .with .narrow .arches .- .CORRECT
.ANSWER-#1


size .film .used .for .PA's .on .adults .- .CORRECT .ANSWER-#2

size .film .used .for .BW .on .adults .- .CORRECT .ANSWER-#2

size .film .used .for .occlusals .on .adults .- .CORRECT .ANSWER-#4

What .is .the .purpose .of .the .embossed .dot .- .CORRECT .ANSWER-to .distinguish
.b/w .patient's .right .and .left .side


What .is .the .latent .image .- .CORRECT .ANSWER-invisible .image .(remains .like .this
.until .film .is .processed)


What .happens .in .the .developer .- .CORRECT .ANSWER-reduces .the .exposed
.silver .halide .crystals .to .black .metallic .silver

,What .happens .in .the .fixer .- .CORRECT .ANSWER-removes .the .unexposed .silver
.halide .crystals


how .long .does .film .stay .in .the .developer .- .CORRECT .ANSWER-5 .min

how .long .are .films .fixed .- .CORRECT .ANSWER-10 .min .(dbl .the .development
.time)


how .long .does .the .first .rinse .last .- .CORRECT .ANSWER-20 .seconds

how .long .is .the .final .rinse .- .CORRECT .ANSWER-20 .min

what .is .the .optimum .processing .temp. .- .CORRECT .ANSWER-68 .degrees .F

when .can .the .films .be .exposed .to .white .light .- .CORRECT .ANSWER-after .2-3
.min .of .fixing .if .needed


what .causes .film .fogging .- .CORRECT .ANSWER--old .or .contaminated
.processing .solutions
-exposure .to .chemical .fumes
-faulty .safelight
-scatter .radiation

what .would .cause .a .film .to .be .too .light .- .CORRECT .ANSWER--underexposure
-underdevelopment
-depleted .developer .solution
-excessive .fixation .(takes .all .crystals .off)

what .would .cause .a .film .to .be .too .dark .- .CORRECT .ANSWER--overexposure
-overdevelopment
-developer .is .too .strong
-not .enough .fixation
-exposure .to .white .light
-improper .safelighting

What .causes .a .HERRINGBONE .effect .- .CORRECT .ANSWER-film .placed
.backwards


what .would .happen .to .a .film .that .is .placed .in .the .fixer .prior .to .development .-
.CORRECT .ANSWER-blank .or .clear
(takes .all .of .the .crystals .off)

what .is .reticulation .- .CORRECT .ANSWER-cracking .of .the .emulsion .caused .by
.excessive .temp .diff. .b/w .any .darkroom .solutions


how .would .a .film .appear .if .submerged .totally .in .the .developer .but .not .in .the
.fixer .- .CORRECT .ANSWER-top .of .film .delineated .by .a .straight .line .then .dark

, film .submerged .totally .in .fixer .but .not .in .developer .- .CORRECT .ANSWER-part
.that .was .fixed .but .not .developed .would .be .clear


what .size .bulb .is .used .in .safelight .- .CORRECT .ANSWER-7 .1/2 .or .15 .watt

what .type .of .safelight .filter .is .acceptable .- .CORRECT .ANSWER-GBX .- .2

how .far .from .the .work .surface .must .the .safelight .be .mounted .- .CORRECT
.ANSWER-4 .feet


diff. .b/w .direct .and .indirect .exposure .sensor? .- .CORRECT .ANSWER-direct .-
.directly .obtaining .a .digital .image .by .exposing .intraoral .sensor .to .x-rays .to
.provide .an .image .that .can .be .viewed .on .a .computer


indirect .- .photostimuable .phosphor .plate .sensor .technology, .obtaining .a .digital
.image .in .which .an .exposed .phosphor .plate .is .placed .into .a .scanner .and .then
.converted .into .a .digital .image


what .film .is .used .to .diagnose .interproximal .decay .- .CORRECT .ANSWER-BW

what .projection .would .you .take .for .a .patient .complaining .of .pain .in .the .lower
.left .molar .area .- .CORRECT .ANSWER-left .molar .PA


what .is .the .purpose .of .a .pano .- .CORRECT .ANSWER-image .the .entire .dentition,
.surrounding .alveolar .bone, .sinuses, .and .the .TMJ, .examine .large .area .of .face
.and .jaws, .locate .impacted .teeth, .retain .root .tips, .evaluate .trauma, .lesions, .and
.diseases, .and .assess .growth .and .development


what .causes .foreshortening .- .CORRECT .ANSWER-excessive .vertical .angulation

what .causes .elongation .- .CORRECT .ANSWER-insufficient .vertical .angulation

what .causes .overlapping .- .CORRECT .ANSWER-incorrect .horrizontal .angulation

what .causes .conecut .- .CORRECT .ANSWER-not .centered .on .sensor

what .causes .clear .film .- .CORRECT .ANSWER-no .exposure, .or .fixer .before
.developer


what .causes .missing .crowns .- .CORRECT .ANSWER-excessive .vertical
.angulation


what .causes .missing .apices .- .CORRECT .ANSWER-insufficient .vertical
.angulation


when .mounting .a .film .the .dot .is .convex, .on .what .side .of .the .mouth .would .you
.find .#32? .- .CORRECT .ANSWER-left .side