1. Skeletal classification of malocclusion was first given by: Moyers Salzman Kratz Angle 2. Primate space in mandibular arch is present between: Canine and premolar Canine and primary first molar Lateral incisor and canine 1′ and 2″ primary molars 3. The permanent maxillary canine most commonly erupts after the maxillary second permanent molar. before the maxillary first premolar. before the maxillary second permanent molar. before the mandibular permanent canine. 4. The most common clinical characteristic of a functional crossbite is pain on closure. midline deviation. severe crowding. arch asymmetry. 5. The most appropriate treatment following the extraction of a first primary molar in a 4 year old child is regular assessment of arch development. insertion of a space maintainer. extraction of the contra-lateral molar. to perform space analysis. 6. Which cephalometric angle does not change with treatment SNB ANB Saddle angle SNA 7. Malocclusion caused by thumb sucking: Convex profile Narrow mandible arch Concave profile Deep bite 8. A single tooth anterior crossbite found in a 9 year old should be treated with a removable appliance. have 2 arch orthodontic treatment. be treated in the complete permanent dentition. self-correct. 9. Couple in orthodontics means: 2 unequal forces acting on the same object opposite in direction Single force acting on 2 objects at the same time Single force acting on the same object 2 forces equal and opposite in direction acting on the same object 10. With flush-terminal plane, permanent first molars will erupt: Initially in class III relationship Initially end-to-end relationship Initially in class I relationship Initially in class II relationship 11. Class II malocclusion usually presents a _________________ facial profile: Orthognathic Retrognathic Prognathic Complex 12. Interincisal angle is increased in Class I malocclusion with bimaxillary protrusion Class II division 1 malocclusion Class I type 2 malocclusion Class II division 2 malocclusion 13. In a case with Class II malocclusion in a growing child, why is deep bite corrected before overjet: To reduce palatal trauma due to traumatic deep bite To remove mechanical obstruction in normal mandibular anterior shift To aid in bonding brackets to lower anterior teeth To achieve faster tooth movement 14. In an Angle Class I occlusion, which cusp of which permanent tooth moves between the mesiolingual and distolingual cusps of the mandibular second molar in a working side movement? Distolingual cusp of the maxillary second molar. Mesiolingual cusp of the maxillary second molar. Mesiolingual cusp of the maxillary first molar. Distolingual cusp of the maxillary first molar. 15. All of the following are a feature of Complex Tongue Thrust except? Contraction of the circumoral muscles during swallowing. This tongue thrust is characterized by teeth together swallow. The anterior open bite can be diffused or absent. The occlusion of teeth may be poor. 16. All of the following are types of tooth movement EXCEPT one. Which one is the EXCEPTION? Tipping extrusion translation pulling 17. Hand wrist radiograph in orthodontics are used to accurately determine: Dental age Both A and B Skeletal maturity Chronological age 18. Which is the most stable and the most often used plane for the superimposition of lateral cephalogram for studying the growth of a child? S-N plane Mandibular plane Occlusal plane Frankfort plane 19. Space maintainer indicated in case of bilateral loss of deciduous maxillary molars at 8 years of age: Transpalatal arch Nance palatal button Band and bar Band and loop 20. Model diagnostic setup for planning clear aligners in 1945 was given by: Angle Kesling Rickets Tweed Loading … Question 1 of 20
