Unilateral buccal crossbite is seen in 1) Lingually locked anteriors 2) Class III skeletal relationship 3) Bilateral maxillary protrusion 4) All of the above
OrthodonticsAnswer: 4
Mandible closely follows the growth curve of 1. Lymphoid tissue 2. Neural tissue 3. General tissues 4. All of the above
OrthodonticsAnswer: 3
Combination of deposition and resorption occurring in the different bones of the skull which result in a growth movement towards the depository surface is termed as 1) Remodelling 2) Displacement 3) Physiologic resorption 4) Drift
OrthodonticsAnswer: 4
Expansion screws used in treatment of crossbites produce 1) 1 mm expansion per quanter turn 2) 0.20 mm expansion/quarter turn, which is equal to width of PDL ligament 3) 1 mm expansion per half turn, which is equal to width of PDL ligament 4) 1 mm expansion per quarter turn, which is equal to width of PDL ligament
OrthodonticsAnswer: 2
Between 5 and 12 years, the following is true of overbite 1) Increase in absoulte value due to change in dentition 2) Constant percentage of overlap is maintained 3) It may increase, decrease or remain same 4) All of the above
OrthodonticsAnswer: 4
A corrected anterior crossbite is retained by 1) Overcorrection 2) Normal incisor correction 3) Hawley"s retentive appliance 4) Palatal acrylic appliance with no labial arch wire
OrthodonticsAnswer: 2
Open bite on cephalogram shows as 1) Increased MP angle 2) Decreased MP angle 3) Increased ANB angle 4) None of the above
OrthodonticsAnswer: 1
Meckel"s cartilage 1) Gives origin to greater part of mandible 2) Contributes to origin of mandibular condyle only 3) Greater part of it disappears without contributing to the formation of mandible 4) None of the above
