1. Andrew's 5th key of occlusion isBolton's rationRotation absentTight contactsCurve of speeQuestion 1 of 20 2. Which of the following is used for etching porcelain?4% HF acid37% HF acid1.23% HF acid9.6% HF acidQuestion 2 of 20 3. Disadvantage of the use of laminated and braided arch wires isLack of stabilityFractureAbruptness in response of adjustmentDifficult to handle clinicallyQuestion 3 of 20 4. An 8 year old patient with all primary molars still present exhibits a cusp-to-cusp relationship of permanent maxillary and mandibular first molars and good alignment of the lower incisors. The management of this patient should be toplace patient on appropriate recall schedule.disk the distal surfaces of primary mandibular second molars.refer for orthodontic consultation.use a cervical headgear to reposition maxillary molars.Question 4 of 20 5. Frontal cephalogram is used to evaluate which type of malrelation:OverbiteSn-GoGn angleFacial asymmetryOverjetQuestion 5 of 20 6. 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 apex.at the cervical line.within the apical half of the root.Question 6 of 20 7. 12 primary and 12 permanent teeth seen at what age in a child:8.56.513.511.5Question 7 of 20 8. The body of the mandible increases in length to accommodate the permanent second molar byresorption of bone along the anterior border of the ramus and apposition of bone on the posterior border of the ramus.apposition of bone on the alveolar margin and lower border of the body of the mandible.apposition of bone in the condyle.apposition of bone at the symphysis and posterior border of the ramus of the mandible.Question 8 of 20 9. In an adult Class II division 1 malocclusion case, what should be done:Extraction of lower 2nd PMExtraction of lower 1st PMExtraction of upper 2nd PMExtraction of upper 1st PMQuestion 9 of 20 10. Which of the following are not classic symptoms of a sucking habit?a Class II malocclusionexpanded maxillary archanterior open biteretroclination of the mandibular incisorsQuestion 10 of 20 11. The importance of proximal caries in deciduous 1st Molar for an orthodontist is:RedUcticin in, arch length due to growth of mandibleFlush terminal plane malocclusionClass I OcclusionLoss of arch lengthQuestion 11 of 20 12. All of the following weights of different components of the PAR index are correct except:Buccal segment (Score X 2)Overbite (Score X 2)Overjet (Score X 6)Midline (Score X 4)Question 12 of 20 13. The initial sign of sexual maturity in boys is usuallyDevelopment of Adam's appleChange in voiceFat spurtAppearance of facial hairQuestion 13 of 20 14. Mode of inheritance of cleft lip n palate isMonogenicPolygenic traitMultifactorial traitSingle gene determinedQuestion 14 of 20 15. On Ricketts esthetic plane, the lower lipIs 2 mm posterior to the planeIs 1 mm posterior to the planeRests on the planeIs I mm anterior to the planeQuestion 15 of 20 16. Plane of reference used in transverse direction in WITS analysis:Sella-nasion planeFrankfurt horizontal planeFunctional occlusal planePalatal planeQuestion 16 of 20 17. All of the following are advantages of the indirect method of bonding brackets to a tooth over the direct method EXCEPT one. Which one is the EXCEPTION?Reduced chair-side timeLess technique sensitiveMore precise location of brackets possible in the laboratoryControlled thickness of the resin between the tooth and the bracket interfaceQuestion 17 of 20 18. A 7 year old child has a badly carious deciduous mandibular first molar that needs removal. What space maintainer will you advise?Band and loopTranspalatal archDistal shoeNance buttonQuestion 18 of 20 19. 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:Arch expansionSurgical extraction canineArch expansion and bone graftBone graftingQuestion 19 of 20 20. In Steiner's analysis, SNA is 82 degrees. This indicates:Mandibular protrusionMaxillary protrusionNormal maxillary baseMaxillary retrusionQuestion 20 of 20 Loading...
