Which of the following are/is not an active component in removable appliance 1) Adams clasp and baseplate 2) Springs and elastics 3) Screws and elastics 4) Labial-bow and springs
OrthodonticsAnswer: 1
Complicated cases are most often treated by fixed appliances than removable appliance because 1) They apply heavy forces 2) Wide range of tooth movements possible 3) Require less anchorage 4) They cannot be removed by patients
OrthodonticsAnswer: 2
Which of the following factors may contribute to the severity of the incisor overbite in class II malocclusion? 1) Lip activity 2) Overclosure 3) The degree of lower crowding 4) The AP dental base relationship
OrthodonticsAnswer: 4
Head of condyle grows by 1) Interstitial bone growth 2) Appositional bone growth 3) Intramembranous bone growth 4) Proliferation of cartilage
OrthodonticsAnswer: 4
In an individual whose mandible is growing less forward than expected, the lower incisors will probably be inclined 1) Backward 2) Forward 3) Vertically over basal bone 4) No relation at all
OrthodonticsAnswer: 2
Relapse after orthodontic treatment can be totally prevented by 1) Inactive fixed appliance 2) Hawley"s retainer worn for 1 year 3) Wearing activator for 3 months 4) None of the above, some degree of relapse is normal
OrthodonticsAnswer: 4
Adams cribs can fracture in use if the 1) Wire is too soft 2) Tags are high on the bite 3) Baseplate is too thick 4) Arrowheads are too small
OrthodonticsAnswer: 2
If the force applied is through tooth centre of resistance, then root will 1) Tip 2) Translate or move bodily 3) Intrude 4) Extrude
