1. Superimposition in cephalometric studies is done from Registration point. This demonstrates best: Growth of structures farthest from that point Growth of structures at that point Growth of structures nearest from that point All of the above 2. an Angle Class I occlusion, the mesiobuccal cusp of the maxillary first molar occludes with mesial marginal ridge of the mandibular first molar. mesiobuccal groove of the mandibular first molar. mesiobuccal cusp of the mandibular first molar. central fossa of the mandibular first molar. 3. Overbite is defined as: The vertical overlap of maxillary anterior over mandibular anterior teeth Distobuccal cusp of maxillary 1st molar occludes with the central fossa of mandibular 1st molar The horizontal overlap of mandibular over maxillary anterior teeth The horizontal overlap of the maxillary and mandibular anterior teeth 4. For bite opening in orthodontics, which of the following is done: Intrusion of anterior and extrusion of posterior teeth Mesialization of posterior teeth Extrusion of anterior and intrusion of posterior teeth Retraction of anterior teeth 5. In an 8-year old, the optimum time for treatment of an anterior crossbite of dental origin is after the maxillary premolars erupt. as soon as possible. following completion of jaw growth. after the maxillary canines are in position. 6. Ideal orthodontic tooth movement involves undermining resorption. large forces. subcrestal incisions. frontal resorption. 7. Inability to produce bilabial sounds properly like /b/ and /p/ along with lisp like sounds is seen in which malocclusion: Class I type 3 Class II division 1 with incompetent lips Class III with competent lips Class I type 4 8. If the centre of rotation is at the apex of the root, then the orthodontic movement which results is: Torquing Controlled tipping Translation Uncontrolled tipping 9. 12 primary and 12 permanent teeth seen at what age in a child: 13.5 6.5 8.5 11.5 10. 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 Not related to duration 2 hrs daily 6 hrs daily 11. At age 9, a pt needs his tooth #30 extracted due to caries. What is the proper space maintenance treatment? removable partial denture no space maintenance is needed distal shoe on “T” band and loop on “T” 12. A single tooth anterior crossbite found in a 9 year old should have 2 arch orthodontic treatment. be treated in the complete permanent dentition. be treated with a removable appliance. self-correct. 13. Which is the most important factor in habits Intensity Age Frequency Type of habit 14. Angle’s classification of occlusion is based on antero-posterior relationship of maxillary and mandibular first permanent molars. a full complement of teeth. antero-posterior skeletal relationship of maxilla to mandible. vertical relationships in the lower face. 15. Two millimeters of maxillary incisor spacing in a 3 year old is indicative of a normal pattern of development. maxillary Bolton deficiency. tooth size-arch size discrepancy. persistent tongue thrusting. 16. 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: Extracting the primary second molar Removing the soft tissue overlying the occlusal surface of permanent molar Use of a brass wire to move the permanent molar distally Disking of the distal surface of the primary second molar 17. Not true about couple of forces acting on a tooth: Usually forces are equal in magnitude Forces are oriented parallel to each other Collinear forces acting in same direction Pure rotation can be achieved 18. Transverse cant of occlusal plane is seen in frontal plane examination. It occurs due to: Alteration and abstraction of jaw Change in yaw of dentition Alteration in roll of dentition Alteration in pitch of dentition 19. Cobalt-Chromium alloy (elgiloy) is not available in which of the following tempers Blue Black Green Red 20. Model diagnostic setup for planning clear aligners in 1945 was given by: Kesling Angle Tweed Rickets Loading … Question 1 of 20
