1. In a case with Class II malocclusion in a growing child, why is deep bite corrected before overjet:To aid in bonding brackets to lower anterior teethTo remove mechanical obstruction in normal mandibular anterior shiftTo reduce palatal trauma due to traumatic deep biteTo achieve faster tooth movementQuestion 1 of 20 2. A strong buttress of bone extending from the zygoma to the alveolar process in the region of the maxillary first molar is calledKey ridgeMolar eminenceCanine eminenceAlveolar eminenceQuestion 2 of 20 3. Mild force during orthodontic tooth movement producesAcute pulpitisNo effect on pulpMild hyperaemiaNecrosis of pulpQuestion 3 of 20 4. Which of the following bone is used for estimation of growth in an individual:ClavicleCapitateCervical vertebraFrontal boneQuestion 4 of 20 5. Best method to sterilize orthodontic plier isAlcoholAutoclaveBoilingChemiclaveQuestion 5 of 20 6. In EMG, activity of mentalis muscle was detected very high. The patient might have:Class-I malocclusionClass-II division-2 malocclusionClass-III malocclusionClass-II division-1 malocclusionQuestion 6 of 20 7. During active tooth movement, hyalinization is seen during:Initial phaseAll three stagesPost-lag phaseLag phaseQuestion 7 of 20 8. High pull head gear is used for all except:To protract maxillaTo intrude maxillary molarsTo hold maxillary molarTo restrain maxillary growthQuestion 8 of 20 9. The predominant type of movement produced by a finger spring on a removable appliance istorque.tipping.translation.rotation.Question 9 of 20 10. Premature loss of a primary maxillary second molar usually produces a malocclusion in the permanent dentition that is characterized byan Angle Class III molar relationship on the affected side.labially displaced maxillary canines.an Angle Class II molar relationship on the affected side.delayed eruption of the permanent first molar.Question 10 of 20 11. Maximum bends that can be given in which wire before fracture:Co-Cr-NiNiTi?-titaniumStainless steelQuestion 11 of 20 12. Leeway space of Nance isSpace difference between maxillary premolars and mandibular premolarsSpace difference between permanent canines and premolars and deciduous canine and molarsSpace differencc between permanent premolars and deciduous molarsSpace difference between permanent molars and deciduous molarsQuestion 12 of 20 13. Advantage of metal modified GIC over conventional GIC isHigh fracture resistanceHigh abrasion resistanceHigh strengthAestheticQuestion 13 of 20 14. Condition of mouth breathing usually showsHypertonic lower lipHypertonic upper lipHypotonic lower lipHypotonic upper lipQuestion 14 of 20 15. Direction of growth of maxilla:Upward and backwardDownward and forwardDownward and backwardUpward and forwardQuestion 15 of 20 16. How much overjet can be successfully managed using dentofacial orthopedics:5-7 mm14-18 mm10-14 mm0-7 mmQuestion 16 of 20 17. Not true about couple of forces acting on a tooth:Pure rotation can be achievedForces are oriented parallel to each otherCollinear forces acting in same directionUsually forces are equal in magnitudeQuestion 17 of 20 18. In mandibular rotation what is the contribution of total matrix and intra matrix rotation:25% matrix; 75% intramatrix50% intramatrix; 50% matrix100% intramatrix; 0% matrix0% intramatrix; 100% matrixQuestion 18 of 20 19. In an adult patient the C-res liesAt incisal edge of crownShifted more cervicallyShifted more apicallyAt.the center of rootQuestion 19 of 20 20. Increased ANB angle signifies:Retrognathic mandible.Bimaxillary protrusionRetrognathic maxillaPrognathic mandibleQuestion 20 of 20 Loading...