1. Which of the following teeth has maximum sensory innervations:Maxillary canineMandibular 1st molarMaxillary lateral incisorMaxillary central incisorsQuestion 1 of 20 2. Which of the following is used for etching porcelain?37% HF acid9.6% HF acid1.23% HF acid4% HF acidQuestion 2 of 20 3. Best time to modify growth is:Late mixed dentitionPrimary dentitionEarly mixed dentitionPermanent dentitionQuestion 3 of 20 4. In the mixed dentition, an end-to-end first permanent molar relationship is indicative ofideal molar occlusion.normally developing occlusion.Angle Class II malocclusion.Angle Class III malocclusion.Question 4 of 20 5. A 6 year old patient has a larger than average diastema between the maxillary central incisors. The radiographic examination shows a mesiodens. In order to manage the diastema, you should extract the mesiodensonce the patient has reached the age of 12.only if it develops into a cystic lesionafter its complete eruption.as soon as possible.Question 5 of 20 6. Ideal orthodontic tooth movement involveslarge forces.frontal resorption.undermining resorption.subcrestal incisions.Question 6 of 20 7. Most favorable for reinforcement of anchorage is:Conical rootsShifting centre of resistance apicallyTooth with intact proximal contactsTooth out of occlusionQuestion 7 of 20 8. During Orthodontic Bonding, etching removes how much enamel3-9 ?m20-40 ?m21-30 ?m10-20 ?mQuestion 8 of 20 9. Which of these is most promising soft tissue investigation:Barium MealTc scanPoor man cephalometryStereophotogrammetryQuestion 9 of 20 10. An anterior crossbite in the primary dentition is often indicative of which of the following?A skeletal growth problemA normal growth patternA developing Class ll malocclusionImpacted permanent maxillary canineQuestion 10 of 20 11. In periodontal compromised tooth, which tooth movement is done carefullyProclinationUprightingRetroclinationIntrusionQuestion 11 of 20 12. Maxillary skeletal arch expansionrequires surgery in skeletally immature patients.is easiest in the preadolescent patient.increases overbite.decreases arch space.Question 12 of 20 13. The lowest incidence of cleft palate is seen in which of the following:NegroesMongloidAfghansIndiansQuestion 13 of 20 14. Mesioangular ectopic eruption of a permanent mandibular first molar causing resorption of distal surfaces of the roots of the primary 2nd molar should be treated by:Removing the soft tissue overlying the occlusal surface of permanent molarExtracting the primary second molarDisking of the distal surface of the primary second molarUse of a brass wire to move the permanent molar distallyQuestion 14 of 20 15. According to Simon classification, movement of teeth towards Frankfort plane is called:AttractionProtractionRetractionAbstractionQuestion 15 of 20 16. Stationary anchorage in orthodontics means:Use of opposite arch for anchorageAbutment is not free to tiltEqual and opposite movement in anchor unitThe abutment tooth is free to tiltQuestion 16 of 20 17. A tooth undergoing orthodontic tooth movement, the tension side will show:Widened PDL spaceFuzziness of lamina duraNarrowed PDL spaceOverall narrowing of PDL space on both sidesQuestion 17 of 20 18. an Angle Class I occlusion, the mesiobuccal cusp of the maxillary first molar occludes withmesial marginal ridge of the mandibular first molar.mesiobuccal cusp of the mandibular first molar.central fossa of the mandibular first molar.mesiobuccal groove of the mandibular first molar.Question 18 of 20 19. The green elgiloy wire isResilientDuctileSemi-resilientSoft and easy to bendQuestion 19 of 20 20. The lag phase of tooth movement usually lasts for?2 - 3 weeks2-3 months2-3 hours2 - 3 daysQuestion 20 of 20 Loading...