1. The most common clinical characteristic of a functional crossbite is midline deviation. pain on closure. severe crowding. arch asymmetry. 2. Collumn angle is increased in Class I Class III Class II Div 1 Class II Div 2 3. Eruption path of posterior maxillary permanent teeth is directed: Downward and distal Downward and labial Downward and buccal Downward and mesial 4. For bite opening in orthodontics, which of the following is done: Intrusion of anterior and extrusion of posterior teeth Retraction of anterior teeth Extrusion of anterior and intrusion of posterior teeth Mesialization of posterior teeth 5. Cobalt-Chromium alloy (elgiloy) is not available in which of the following tempers Red Black Green Blue 6. Once bone is formed, it grows by: both appositional and interstitial growth degenerative changes into bony structures appositional growth only interstitial growth only 7. When force is applied through center of resistance of tooth which of the following occurs: Translation Rotation Tipping Torquing 8. In Downs analysis, an increase in Y axis is suggestive of: Vertical growth pattern Average growth pattern Horizontal growth pattern Skeletal dysplasia 9. A 7 year old child has a badly carious deciduous mandibular first molar that needs removal. What space maintainer will you advise? Transpalatal arch Distal shoe Nance button Band and loop 10. To produce pure translatory motion in a tooth, what type of force is required Interrupted force Continuous force Moment of force Intermittent force 11. Which orthodontic analysis uses the dimensions of the upper and lower anterior teeth to predict the dimensions of the posterior teeth: Moyers analysis Bolton’s analysis Carey’s analysis Hixon and Oldfather 12. Bone remodeling theory of craniofacial growth was given by Brash Melvin and Sicher Van der claw John hunter 13. Which of the following model analysis would be useful in planning extractions tor a 14 year old boy with severe Class II division 1 malocclusion Bolton’s analysis Ashley Howe analysis Fonts analysis Peck & Peck analysis 14. To prevent mesial drift of a permanent first molar, the ideal time to place a distal extension space maintainer is as soon as the tooth erupts through the gingival tissue. immediately after extraction of the primary second molar. after the permanent second molar has erupted. as soon as the extraction site of the primary second molar has completely healed. 15. Retrusion and protrusion of the mandible cannot be measured by which radiographic cephalometric variable? Facial angle Facial axis N-Pog perpendicular ANB 16. Alveolar bone is undergoing remodelling until the complete eruption of permanent teeth. through the primary dentition. until the end of mixed dentition. throughout life. 17. Serial extraction procedures involve: Orderly removal of selected primary and permanent teeth in a single sitting Orderly sequential removal of selected primary teeth only Orderly and sequential removal of selected permanent teeth only Orderly removal of selected primary and permanent teeth in a predetermined sequence 18. Which of these is most promising soft tissue investigation: Tc scan Barium Meal Poor man cephalometry Stereophotogrammetry 19. Which type of malocclusion should be corrected as early as possible? Class II Division 2 associated with an increased anterior overbite. Cross-bite associated with a functional shift of the mandible from initial contact to maximum intercuspation. Anterior open bite associated with a lip or digit sucking habit. Class II Division 1 associated with an anterior open bite. 20. Skeletal classification of malocclusion was first given by: Kratz Salzman Angle Moyers Loading … Question 1 of 20
