1. Skeletal classification of malocclusion was first given by: Angle Moyers Salzman Kratz 2. Most favorable for reinforcement of anchorage is: Tooth out of occlusion Tooth with intact proximal contacts Shifting centre of resistance apically Conical roots 3. Dontrix gauze is used to: Measure strength of wire Measure wire distortion Measure force Measure wire deformation 4. Thumb sucking in child leads to change in facial profile (dental and skeletal changes), if the child performs the habit at least for how much time: 4 hrs daily 6 hrs daily Not related to duration 2 hrs daily 5. The two main conditions complicating the correction of a single tooth anterior crossbite are a decreased overbite and a large labial frenum. lack of spacing and increased overbite. an increased overbite and a large labial frenum lack of spacing and decreased overbite. 6. Spheno-occipital synchondroses fuses by what age: 9 years 3 years 13 years 16 years 7. Maxillary 1st molar cusp used in Angle classification Distobuccal Mesiobuccal Distolingual Mesiolingual 8. an Angle Class I occlusion, the mesiobuccal cusp of the maxillary first molar occludes with central fossa of the mandibular first molar. mesiobuccal groove of the mandibular first molar. mesial marginal ridge of the mandibular first molar. mesiobuccal cusp of the mandibular first molar. 9. Facial profile of a child with a habit of thumb sucking: Convex and short face Concave and long face Convex and long face Concave and short face 10. Everted prominent lips with small mandible indicates: Upper increased facial height Lower increased facial height Lower decreased facial height Upper decreased facial height 11. Model diagnostic setup for planning clear aligners in 1945 was given by: Kesling Angle Rickets Tweed 12. Baker’s anchorage is also known as Intramaxillary anchorage Intraoral anchorage Extraoral anchorage Intermaxillary anchorage 13. The most common clinical characteristic of a functional crossbite is arch asymmetry. severe crowding. pain on closure. midline deviation. 14. In long face individuals, who have excessive lower anterior facial height, the palatal plane is rotated No rotation of the palatal plane Down posteriorly Down anteriorly Up posteriorly 15. Maxillary arch increases in length by: Development of Palate Growth at the sphenozygomatic suture Development of alveolar process Deposition of bone at Tuberosity 16. The predominant type of movement produced by a finger spring on a removable appliance is torque. rotation. translation. tipping. 17. While treating increased anterior overbite while keeping mandibular plane angle same, increase in molar height is compensated by: Relative extrusion Relative intrusion Absolute intrusion Absolute extrusion 18. There is a difference between girls and boys with respect to the age at which the growth velocity reaches its peak. Girls are six months ahead of boys. Boys are six months ahead of girls. Girls are one year ahead of boys. Girls are two years ahead of boys 19. Not true about couple of forces acting on a tooth: Forces are oriented parallel to each other Pure rotation can be achieved Usually forces are equal in magnitude Collinear forces acting in same direction 20. Reproximation procedure in orthodontics denotes: Space maintenance Retraction of incisors Method of gaining space Method of losing space Loading … Question 1 of 20
