1. A contraindication for serial extraction isMixed dentition stage of dental developmentSevere crowdingClass I skeletal patternDeep biteQuestion 1 of 20 2. Expansion rate in rapid expansion appliance:1.0 min/week0.2-0.4 mm/day0.5 mm/week0.5-1.0 min/dayQuestion 2 of 20 3. A 9 year old child with developing facial asymmetry and maxillary constriction and unilateral posterior cross bite comes to you for treatment. What will you do?Send for radiographic analysisRefer to orthodontistWait for eruption of all teethStart expansion by removable applianceQuestion 3 of 20 4. In Downs analysis, an increase in Y axis is suggestive of:Skeletal dysplasiaVertical growth patternAverage growth patternHorizontal growth patternQuestion 4 of 20 5. Which of the following is not a function of labial bowRetentionAttachment of auxiliaryAnchorageTooth movementQuestion 5 of 20 6. 10 year old cleft boy with h/o cleft surgery, lip repair at 3 months and palate at 1 year reports for treatment. On examination maxillary arch was constricted and cleft at the alveolus of canine and canine was unerupted. What will you do:Surgical extraction canineArch expansion and bone graftArch expansionBone graftingQuestion 6 of 20 7. The permanent maxillary canine most commonly eruptsbefore the maxillary second permanent molar.after the maxillary second permanent molar.before the mandibular permanent canine.before the maxillary first premolar.Question 7 of 20 8. Moyers D type CLASS II malocclusion isOrthognathic Maxilla / Orthognathic MandibleOrthognathic Maxilla / Retrognathic MandiblePrognathic Maxilla / Retrognathic MandibleRetrognathic Maxilla / Retrognathic MandibleQuestion 8 of 20 9. Cephalometrics is useful for assessing all of the following relationships except:Soft palate to gingiva.Tooth to toothBone to boneTooth to boneQuestion 9 of 20 10. ADA number for orthodontic wire is30283225Question 10 of 20 11. 12 yr old patient comes with retained primary mandibular second molar and radiograph shows congenitally missing second premolar. Most conservative approach would beExtraction of 11d molar and allowing the rest to migrate in its positionRetain the 2nd molar with minimum proximal contact strippingExtraction of 2nd molar and giving a bridgeExtraction of 2nd molar and Transplantation of third molar in its place.Question 11 of 20 12. Which is the most important factor in habitsIntensityAgeType of habitFrequencyQuestion 12 of 20 13. Arrowhead clasp is also called:SchwarzCrozatAdams claspMultipleQuestion 13 of 20 14. Maximum injury to protective layer of tooth occurs duringExtrusionLuxationConcussionIntrusionQuestion 14 of 20 15. Not true about couple of forces acting on a tooth:Usually forces are equal in magnitudeCollinear forces acting in same directionForces are oriented parallel to each otherPure rotation can be achievedQuestion 15 of 20 16. Incisal liability in the maxillary and mandibular arch is:5 mm maxilla, 7 mm mandible4 mm maxilla, 6 mm mandible7 mm maxilla, 5 mm mandible6 mm maxilla, 4 mm mandibleQuestion 16 of 20 17. The initial sign of sexual maturity in boys is usuallyDevelopment of Adam's appleAppearance of facial hairFat spurtChange in voiceQuestion 17 of 20 18. The lag phase of tooth movement usually lasts for?2 - 3 days2 - 3 weeks2-3 hours2-3 monthsQuestion 18 of 20 19. In mandibular rotation what is the contribution of total matrix and intra matrix rotation:25% matrix; 75% intramatrix50% intramatrix; 50% matrix0% intramatrix; 100% matrix100% intramatrix; 0% matrixQuestion 19 of 20 20. Flutes present in microimplant helps in?Easy removalSecondary StabilityPrimary StabilityEasy Insertion & Clear DebrisQuestion 20 of 20 Loading...
