1. Thumb sucking is normal upto what age: 4 yrs 5 yrs 2 yrs 1 yr 2. Which analysis uses the measurement of lower incisors to calculate dimensions of posterior teeth: Nance analysis Huckaba analysis Bolton’s analysis Moyers analysis 3. To prevent mesial drift of a permanent first molar, the ideal time to place a distal extension space maintainer is as soon as the extraction site of the primary second molar has completely healed. as soon as the tooth erupts through the gingival tissue. after the permanent second molar has erupted. immediately after extraction of the primary second molar. 4. According to the NORMS of the orthodontic study models, the total height of maxillary n mandibular model should be close to? 60 mm 55 mm 70 mm 90 mm 5. Bien theory is related to: Tooth movement Bone regeneration Osteomyelitis Osteitis 6. The most appropriate time for surgical treatment of a patient with mandibular prognathism is following the completion of growth. just before eruption of the second permanent molars. just after the end of the prepubertal growth spurt. just after eruption of the second permanent molars. 7. A Child with a Unilateral crossbite on closure is most probably suffering from: Unilateral constriction of maxilla with deviated closure into unilateral crossbite Unilateral constriction of maxilla Bilateral constriction of maxilla Bilateral constriction of maxilla with deviated closure into unilateral crossbite 8. Which of these is most promising soft tissue investigation: Tc scan Poor man cephalometry Barium Meal Stereophotogrammetry 9. Mesioangular ectopic eruption of a permanent mandibular first molar causing resorption of distal surfaces of the roots of the primary 2nd molar should be treated by: Use of a brass wire to move the permanent molar distally Disking of the distal surface of the primary second molar Extracting the primary second molar Removing the soft tissue overlying the occlusal surface of permanent molar 10. In true deep bite freeway space is Decreased Completely Obliterated Increased Remains Same 11. Appearance of ulnar sesamoid bones in hand occurs: At onset of pubertal growth spurt At the end of pubertal spurt Birth At the prepubertal spurt 12. Which of these is rarely seen in primary dentition: End-on molar relation Spacing Protrusive anterior maxillary teeth Crowding 13. Transverse cant of occlusal plane is seen in frontal plane examination. It occurs due to: Alteration and abstraction of jaw Alteration in roll of dentition Alteration in pitch of dentition Change in yaw of dentition 14. In a case with Class II malocclusion in a growing child, why is deep bite corrected before overjet: To remove mechanical obstruction in normal mandibular anterior shift To reduce palatal trauma due to traumatic deep bite To achieve faster tooth movement To aid in bonding brackets to lower anterior teeth 15. Stationary anchorage in orthodontics means: Abutment is not free to tilt Equal and opposite movement in anchor unit Use of opposite arch for anchorage The abutment tooth is free to tilt 16. Superimposition in cephalometric studies is done from Registration point. This demonstrates best: Growth of structures at that point All of the above Growth of structures farthest from that point Growth of structures nearest from that point 17. For planning treatment in a patient with facial asymmetry requiring orthognathic surgery, which of the following is required: Model analysis Grummons analysis OPG CBCT 18. Which of the following materials is not used as antiflux? Boric acid Graphite Calcium carbonate in alcohol Rouge 19. Hand wrist radiograph in orthodontics are used to accurately determine: Dental age Both A and B Chronological age Skeletal maturity 20. A tooth undergoing orthodontic tooth movement, the tension side will show: Widened PDL space Fuzziness of lamina dura Overall narrowing of PDL space on both sides Narrowed PDL space Loading … Question 1 of 20
