1. A tooth undergoing orthodontic tooth movement, the tension side will show:Narrowed PDL spaceWidened PDL spaceFuzziness of lamina duraOverall narrowing of PDL space on both sidesQuestion 1 of 20 2. On Ricketts esthetic plane, the lower lipIs 2 mm posterior to the planeIs I mm anterior to the planeRests on the planeIs 1 mm posterior to the planeQuestion 2 of 20 3. Moyers D type CLASS II malocclusion isOrthognathic Maxilla / Orthognathic MandibleOrthognathic Maxilla / Retrognathic MandiblePrognathic Maxilla / Retrognathic MandibleRetrognathic Maxilla / Retrognathic MandibleQuestion 3 of 20 4. Teeth suffered from concussion, fracture of crown or root etc but not affecting pulp. Orthodontic force should be applied after1month3 months15 days2 monthsQuestion 4 of 20 5. When a simple tipping force is applied to the crown of a single-rooted tooth, the centre of rotation is locatedwithin the cervical one third of the root.at the cervical line.within the apical half of the root.at the apex.Question 5 of 20 6. The cranial vault is made up of a number of flat bones that are formed by _________________ , ________ cartilaginous precursors.Both endochondral and intramembranous bone formation; withoutBoth endochondral and intramembranous bone formation; withIntramembranous bone formation; withoutEndochondral bone formation; withQuestion 6 of 20 7. The displacement of a tooth from the socket in the direction of eruption is referred to as:TranslationExtrusionIntrusionTippingQuestion 7 of 20 8. In an infant, the gum pad is separated from palate by:Dental grooveGingival grooveLateral sulcusTransverse grooveQuestion 8 of 20 9. Malocclusion caused by thumb sucking:Narrow mandible archConcave profileDeep biteConvex profileQuestion 9 of 20 10. In Dewers method of serial extraction procedure, the second step involved is toExtract deciduous canine onlyExtract first deciduous molar onlyExtract first premolarExtract both deciduous canine and first deciduous molarQuestion 10 of 20 11. Supracrestal fibrotomy is done following correction of:TippingTranslationRotationExtrusionQuestion 11 of 20 12. Which of the following may cause extrusion of the maxillary first molars which can cause an open bite?Reverse-pull headgearCervical-pull headgearStraight-pull headgearHigh-pull headgearQuestion 12 of 20 13. Apertognathia means:Reversed overjetIncreased overjetDeep biteOpen biteQuestion 13 of 20 14. Which of the following is the normal relationship of the primary molars in the deciduous dentition?Flush-terminal-planeMesial stepNone of the aboveDistal stepQuestion 14 of 20 15. Dontrix gauze is used to:Measure wire deformationMeasure wire distortionMeasure strength of wireMeasure forceQuestion 15 of 20 16. All of the following are cranial base bones except:FrontalParietalEthmoidSphenoidQuestion 16 of 20 17. Arrowhead clasp is also called:Adams claspSchwarzMultipleCrozatQuestion 17 of 20 18. The mechanism of adjustment to maintain the shape and proportions of bone throughout its growth period is calledcortical drift. translatory growth.area relocation.remodeling.Question 18 of 20 19. Treatment of the ectopic eruption of a permanent maxillary first molar consists of:Extraction of the primary second molarAn appliance incorporating a finger spring to move the primary second molar mesiallyA brass wire placed between the primary second molar and permanent first molarDisking the distal of the primary first molarQuestion 19 of 20 20. Tooth most likely to be displaced in case of mandibular arch crowding is:1st molar2nd premolar1st premolar2nd molarQuestion 20 of 20 Loading...