Patient ages 8 years with skeletal anterior open bite is treated with 1) Posterior bite plane 2) Frankel appliance with high pull headgear 3) Posterior osteotomy to reposition posterior segment 4) Box elastics with fixed appliance
OrthodonticsAnswer: 2
A child at 7.5 years of age receives extended course of tetracyline. Clinical crowns of which following teeth are likely to show discolouration 1) All permanent teeth will be discoloured 2) No teeth will be discoloured to an aesthetically objecionable degree 3) Only incisors and first molars affected 4) Only premolars and affected
OrthodonticsAnswer: 2
Ectodermal cells in tooth bud are responsible for 1) Determination of shape of crown and root 2) Formation of periodontal ligament 3) Formation of cementum 4) Formation of dental pulp
OrthodonticsAnswer: 1
In adams clasp, the angulation of retentive points at the bridge portion of clasp should be 1) 45 degrees 2) 55 degrees 3) 75 degrees 4) 85 degrees
OrthodonticsAnswer: 1
The type of forces exerted by removable functional appliance 1) Light continuous 2) Heavy continuous 3) Intermittent 4) Interrupted
OrthodonticsAnswer: 3
Denholtz appliance is used for 1) Correction of open bite 2) Distalisation of the molars 3) Correction of deep bite 4) Correction of anterior crossbite
OrthodonticsAnswer: 2
Serial extraction should not be undertaken if there is 1) Crowding 2) Presence of ectopic eruption 3) Deep bite or open bite 4) None of these
OrthodonticsAnswer: 3
Reverse headgear (maxillary protraction headgear) is used mainly 1) To retract maxilla in maxillary skeletal protrusion 2) To induce the growth of maxilla in skeletal retrusion 3) To inhibit the growth of mandible in class III skeletal relation 4) To induce the growth of mandible in class III skeletal relation
