An orthodontic positioner is worn 1) To separate the teeth before bonding 2) After the removal of fixed appliance for retention 3) In the place of fixed appliance to move the teeth 4) None of the above
OrthodonticsAnswer: 2
In which one of the following mixed dentition analysis of deciduous dentition there is no use of radiographs 1) Huckaba"s 2) Moyer"s analysis 3) Hixon-Oldfather 4) All of the above
OrthodonticsAnswer: 2
Enamel formation of primary teeth or crown formation of all primary teeth is completed by 1) 1.5 months 2) 5-6 months 3) 1-11 months 4) 15-16 months
OrthodonticsAnswer: 3
Which of the following can be predicted from a flush terminal plane of primary dention 1) Always result in class I molar relation 2) Always result in class II molar relation 3) Always result in class III molar relation 4) It is normal but final molar relation cannot be definitely predicted
OrthodonticsAnswer: 4
If a child stayed for first month of his postnatal life in fluoridinated area, portion of first molar which shows deposition of fluoride 1) Cervical enamel 2) Deep layer of enamel and outer layer of dentin 3) Outer layer of enamel and deep layer of dentin 4) None of the above
OrthodonticsAnswer: 2
All are examples of fixed functional appliances except 1) Herbst 2) Mars 3) Bionator 4) None of the above
OrthodonticsAnswer: 3
The two blocks in the twin block functional appliance are angulated at 1) 45 degrees 2) 70 degrees 3) 65 degrees 4) 80 degrees
OrthodonticsAnswer: 1
Space closure is rapid following loss of which primary molars 1) Maxillary molars; closing within 3 months 2) Mandibular molars; closing within 6 months 3) Maxillary molars; closing within 6 months 4) Mandibular molars; closing within 3 months
