1. Foetus develops infantile swallow and suckling by:28th week of IU lifeAt birthAfter birth32 weeks IU lifeQuestion 1 of 20 2. Maximum friction is seen in which orthodontic wire:AJ WilcockNiTiStainless steel?-titaniumQuestion 2 of 20 3. All of the following are orthodontic bracket materials exceptGoldPolycarbonatePolymethyl methacrylateCeramicQuestion 3 of 20 4. The most likely reason for extracting four first premolars in orthodontics is because ofan excessive overbite.retrusive maxillary incisors.posterior crossbite.a tooth size/arch size discrepancy.Question 4 of 20 5. Which of the following are potentially detrimental conditions that can occur during use of orthodontic appliances?All of the aboveMake proper oral hygiene difficult to performCause irritation to the gingivaAct as plaque harborsQuestion 5 of 20 6. A clinical diagnostic indication of palatal impaction of maxillary permanent canines does NOT includemidline central diastema.delayed exfoliation of primary canines.lack of canine buccal bulges in a 10 year old patient.proclined and laterally flared permanent lateral incisors.Question 6 of 20 7. Gaining the original shape by the wire on heating to transitional temperature is calledThermo elasticityStrain relievingTemperingAnnealingQuestion 7 of 20 8. Minimum number of lobes/centers of formation for permanent teethFourThreeTwoOneQuestion 8 of 20 9. Which of the following conditions is most appropriately treated upon diagnosis?Posterior cross-bite with midline discrepancies.Improper axial inclination.A maxillary midline diastema.End-to-end molar relationships.Question 9 of 20 10. In a case with Class II malocclusion in a growing child, why is deep bite corrected before overjet:To remove mechanical obstruction in normal mandibular anterior shiftTo achieve faster tooth movementTo aid in bonding brackets to lower anterior teethTo reduce palatal trauma due to traumatic deep biteQuestion 10 of 20 11. Branch of orthodontics concerned with management of teeth in mixed dentition period is called:Interceptive orthodonticsCorrective orthodonticsPreventive orthodonticsSurgical orthodonticsQuestion 11 of 20 12. Thumb sucking in child leads to change in facial profile (dental and skeletal changes), if the child performs the habit at least for how much time:Not related to duration6 hrs daily4 hrs daily2 hrs dailyQuestion 12 of 20 13. In which population, incidence of cleft lip and palate has highest incidence:NegroesAfghansJapaneseChineseQuestion 13 of 20 14. 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 archNance buttonDistal shoeQuestion 14 of 20 15. In patients with nickel allergy, which of the following types of orthodontic brackets can be usedCompositeCeramicTitaniumPolycarbonateQuestion 15 of 20 16. Malocclusion caused by thumb sucking:Concave profileNarrow mandible archConvex profileDeep biteQuestion 16 of 20 17. All of the following weights of different components of the PAR index are correct except:Overjet (Score X 6)Midline (Score X 4)Overbite (Score X 2)Buccal segment (Score X 2)Question 17 of 20 18. Mandibular anterior crowding occurs in normal young adults as a result ofMaxillary tooth-size excessThird molarsTraumaLate mandibular growthQuestion 18 of 20 19. Which of the following types of NiTi wires is/are used in orthodontics?PseudoplasticConventionalAll of the aboveThermoplasticQuestion 19 of 20 20. Down syndrome patient showsMidface retrusionRetruded mandibleBoth of the aboveProtruded mandibleQuestion 20 of 20 Loading...
