1. Which of these is most promising soft tissue investigation: Stereophotogrammetry Poor man cephalometry Tc scan Barium Meal 2. Which is the most stable and the most often used plane for the superimposition of lateral cephalogram for studying the growth of a child? Occlusal plane Frankfort plane Mandibular plane S-N plane 3. Progressive malocclusion is: Class III Class II A+C Class I 4. Which condition is appropriately treated at an early age? deviated midline in the absence of a functional shift two deciduous molars nearly in crossbite posterior crossbite with a functional shift mild crowding of lower permanent incisors 5. Ulnar sesamoid bone calcification starts in Prepubertal growth spurt Birth Puberty 3 months after birth 6. When force is applied through center of resistance of tooth which of the following occurs: Tipping Rotation Translation Torquing 7. In a case with Class II malocclusion in a growing child, why is deep bite corrected before overjet: To aid in bonding brackets to lower anterior teeth To reduce palatal trauma due to traumatic deep bite To achieve faster tooth movement To remove mechanical obstruction in normal mandibular anterior shift 8. Bien theory is related to: Bone regeneration Osteomyelitis Tooth movement Osteitis 9. A tooth undergoing orthodontic tooth movement, the tension side will show: Overall narrowing of PDL space on both sides Fuzziness of lamina dura Widened PDL space Narrowed PDL space 10. A 7 year old child has a badly carious deciduous mandibular first molar that needs removal. What space maintainer will you advise? Nance button Distal shoe Transpalatal arch Band and loop 11. Angle’s classification of occlusion is based on antero-posterior skeletal relationship of maxilla to mandible. a full complement of teeth. vertical relationships in the lower face. antero-posterior relationship of maxillary and mandibular first permanent molars. 12. The body of the mandible increases in length to accommodate the permanent second molar by apposition of bone at the symphysis and posterior border of the ramus of the mandible. apposition of bone in the condyle. resorption of bone along the anterior border of the ramus and apposition of bone on the posterior border of the ramus. apposition of bone on the alveolar margin and lower border of the body of the mandible. 13. If moment of couple moment of force MC/MF = 0, then what type of movement occurs: Tipping Torque Bodily Translation 14. Which orthodontic analysis uses the dimensions of the upper and lower anterior teeth to predict the dimensions of the posterior teeth: Carey’s analysis Bolton’s analysis Hixon and Oldfather Moyers analysis 15. Most favorable for reinforcement of anchorage is: Tooth with intact proximal contacts Shifting centre of resistance apically Conical roots Tooth out of occlusion 16. The mechanism of adjustment to maintain the shape and proportions of bone throughout its growth period is called cortical drift. remodeling. translatory growth. area relocation. 17. With flush-terminal plane, permanent first molars will erupt: Initially in class I relationship Initially in class III relationship Initially in class II relationship Initially end-to-end relationship 18. The most common cause of malocclusion with a Class I molar relationship is crossbite in the posterior segments. tooth size and jaw size discrepancy. improper eruption of permanent first molars. a thumbsucking habit. 19. To standardize the magnification during recording of a lateral cephalogram for a child, the position of the sensor/film should be Consider head radius as 9 inches and add to 60 inches between film and source of radiation Consider head radius as 6 inches and add to 60 inches between ilm and source of radiation Distance between the sensor and source of radiation should be kept at 70 inches Distance between sensor and source should be 60 inches 20. Pericision is used for retention of corrected: Rotation Intrusion Impaction Extrusion Loading … Question 1 of 20
