1. Which of the following is not a type of chisel?Enamel hatchetAngle formerWelstadt chiselGingival marginal trimerQuestion 1 of 20 2. What is the half-life of Hg in the human body?5 days55 days25 days85 daysQuestion 2 of 20 3. Core built up on a molar tooth should preferably be done with a chemically cured composite asCore made with a light cure resin would be too opaque and esthetically unacceptableIts lower viscosity allows free flow of resin also around pins and postCore made with a light cure resin would be too brittle and would fracture easilyLight cure resin lacks sufficient strength for a coreQuestion 3 of 20 4. True in case' of traumatic tooth fracture involving dentin:Immediate splinting of teeth should be donePin retained composite is treatment of choiceTooth can be restored immediately or after 9 weeksEmergency treatment should be directed towards saving pulp vitalityQuestion 4 of 20 5. Which type of obturation technique requires heat?Chemically plasticizedMTA obturationLateral condensationVertical condensationQuestion 5 of 20 6. A finishing bur has how many blades compared to a cutting bur?More blades.Same number of blades.Number of blades is unrelated to the bur type.Fewer blades.Question 6 of 20 7. Retraction cord is often used with a hemostatic agent to capture an accurate impression. Which hemostatic agents minimize tissue damage?(SO4)2 and ZnCl2ZnCl2 and AlCl3Fe2(SO4)3 and ZnCl2Fe2(SO4)3 and AlCl3Question 7 of 20 8. Necrosis affects periapical cementum less than bone because:Cementum is vascular while bone is avascularMore number of pathways of spread of inflammation in boneInfection involves bone preferentiallyCementum is more resistant to ResorptionQuestion 8 of 20 9. A major difference between total-etch and selfetching primer dentin bonding systems include all of the following except _____.The time necessary to apply the material(s)The need for wet bondingThe bond strengths to enamelThe amount of smear layer removedQuestion 9 of 20 10. A patient complains of pain in tooth on taking hot food, the pain subsides on taking cold. Diagnosis is:Internal ResorptionReversible pulpitisPartial pulp necrosisTraumatic injuryQuestion 10 of 20 11. Most important property of fissure sealants is:Low viscosityIncreased compressive strengthIncreased filler contentInclusion of colouring agentsQuestion 11 of 20 12. Chronic caries is characterized by which of the following.entrance to the lesion is smallpain is commonlesion is deep and narrowcommon in adultsQuestion 12 of 20 13. Most obvious clinical sign in concussion is:Change in colorBleedingMobilityTenderness on percussionQuestion 13 of 20 14. Which of the following microorganisms is associated with dental cariesStr.rattusStr.salivariusStr.mitisStr. SanguisQuestion 14 of 20 15. To avoid external transportation of the root canalprecurve instruments.avoid the use of sodium hypochlorite.use large instruments.use vigorous instrumentation.Question 15 of 20 16. Process of Internal resorption of root is influenced most by:Type of patientAge of patientThickness of dentinVitality of pulpQuestion 16 of 20 17. First consideration in a case with root fracture:Immobilisation and stabilizationRestoration of the toothImmediate root canal therapyTooth should be extractedQuestion 17 of 20 18. Normally the endodontic post retaining a core-should extend toThe apex of the rootHalf of the root lengthOne-third of the root lengthTwo-third of the root lengthQuestion 18 of 20 19. You are instrumenting a canal with a size 30, 25 mm k-type file. What does each of the sizes denote, respectively?The taper of the file and the length of the fileThe diameter of the tip of the file and the taper of the fileThe diameter of the tip of the file and the length of the fileThe length of the file and the diameter of the tip of the fileQuestion 19 of 20 20. In order to complete a cutting circle of the anal wall, the triangular shaft instrument requires:1/4 turn1/2 turn1/3 turnFull turnQuestion 20 of 20 Loading...