1. Best radiograph to view relationship of adjacent anatomical structures to impacted mandibular toothOPGIOPACBCTLateral cephalogramQuestion 1 of 20 2. Maxillary sinus is seen inPA viewReverse Towne projectionSubmento vertexWaters viewQuestion 2 of 20 3. Best view for TMJ derangements isMRICone beam CTLateral skullCTQuestion 3 of 20 4. consistent radiographs requirefixed KVp and mAlong cone technique proper developingautomatic processingQuestion 4 of 20 5. The radiolucent portions of the images on a processed dental x-ray film are made up of ____.Microscopic grains of silver halideA gelatin on a cellulose acetate baseMicroscopic grains of metallic silverUnexposed silver bromideQuestion 5 of 20 6. which type of radiation effect results in radiation induced thyroid cancergeneticteratogenicautosomalsomaticQuestion 6 of 20 7. the gold standard for the diagnosis of osteoporosis isultrasounddual energy x ray absorptiometrysingle energy x ray absorptiometryquantitative computed tomographyQuestion 7 of 20 8. Radiotherapy given by implantRadioisotope therapyTeletherapyBrachytherapyPhysiotherapyQuestion 8 of 20 9. What is the "critical target" for radiation damagechromosomesenzymesGolgi apparatuslysosomesQuestion 9 of 20 10. The period between radiation exposure and the onset of symptoms is called theLatent periodPeriod of cell injurynone of the aboveRecovery periodQuestion 10 of 20 11. the technique employed in radiotherapy to counteract the effect of tumor motion due to breathing is known asmodulationshuntinggatingarc technique Question 11 of 20 12. Long gray scale is achieved byDecreasing KVpDecreasing tube currentIncreased voltageIncreasing tube currentQuestion 12 of 20 13. Radiograph of a tooth shows appearance of a halo around the root.It may be indicative ofRoot cariesPeriapical periostitisWidening of the periodontal ligamentHorizontal root fractureQuestion 13 of 20 14. Proper radiographic infection control includes all of the following except one. Which one is the exception?Disinfecting x-ray machine surfaceCovering working surfaces with barriersWearing gloves while making radiographsSterilizing film packetsQuestion 14 of 20 15. when a child is not able to hold the IOPA who should hold the filmdentistparentradiographerassistantQuestion 15 of 20 16. During radiographic imaging, predominant X-rays are produced by:Coherent scatteringCompton scatteringBremstrahlung radiationPhotoelectric effectQuestion 16 of 20 17. After radiation therapy , child develop rampant caries,this is calledRampant cariesEarly childhood cariesSecondary cariesRadiation cariesQuestion 17 of 20 18. Radiotherapy is not used inPaget diseaseSpindle cell carcinomaSquamous cell carcinomaMucoepidermoid carcinomaQuestion 18 of 20 19. The angle at which the operator should stand from x ray tube for safety135-180 degree150-185 degree90-135 degree45-90 degreeQuestion 19 of 20 20. A 40 year old male got a blow to angle of mandible but remained asymptomatic.Radiographic examination shows a radioopaque line in the concerned area with a sharp undercut at the lower border of mandible.It may beoverlapping signseparation signsutural diasthetsisnon union signQuestion 20 of 20 Loading...