1. Skeletal classification of malocclusion was first given by: Salzman Moyers Angle Kratz 2. How much overjet can be successfully managed using dentofacial orthopedics: 10-14 mm 14-18 mm 5-7 mm 0-7 mm 3. In Downs analysis, an increase in Y axis is suggestive of: Average growth pattern Vertical growth pattern Horizontal growth pattern Skeletal dysplasia 4. Malocclusion caused by thumb sucking: Deep bite Convex profile Narrow mandible arch Concave profile 5. Model diagnostic setup for planning clear aligners in 1945 was given by: Rickets Angle Tweed Kesling 6. In an infant, the gum pad is separated from palate by: Dental groove Transverse groove Lateral sulcus Gingival groove 7. Prior to the correction of a one tooth anterior crossbite, the principle factor to consider is the developmental age of the patient. adequacy of mesio-distal space. morphology of the anterior teeth. sequence of eruption of the permanent dentition. 8. The most likely reason for extracting four first premolars in orthodontics is because of a tooth size/arch size discrepancy. posterior crossbite. retrusive maxillary incisors. an excessive overbite. 9. Which of these is not an absolute indication to mount orthodontic study models on articulator: Class II case with severe overjet of 14 mm To record the excursive movements of mandible Surgical planning To see and correct Cr-Co discrepancy 10. The Frankfort-horizontal is a reference plane constructed by joining which of the following landmarks? Porion and nasion. Porion and orbitale. Nasion and sella. Porion and sella. 11. Skeletal deep bite causes: Downward rotation of maxilla Upward rotation of maxilla Downward rotation of mandible No rotation of mandible 12. Facial index of 85.6% means: Mesoprosopic face Hypereuryprosopic face Leptoprosopic face Euryprosopic face 13. If moment of couple moment of force MC/MF = 0, then what type of movement occurs: Torque Bodily Translation Tipping 14. A Moment: Force ratio of 7 will cause: Controlled tipping Uncontrolled tipping Translation Torqueing 15. Overbite is defined as: The vertical overlap of maxillary anterior over mandibular anterior teeth The horizontal overlap of mandibular over maxillary anterior teeth The horizontal overlap of the maxillary and mandibular anterior teeth Distobuccal cusp of maxillary 1st molar occludes with the central fossa of mandibular 1st molar 16. Vertical height of face is measured by: Boyle gauge Boos gauge Will’s gauge All of the above 17. Stationary anchorage in orthodontics means: The abutment tooth is free to tilt Use of opposite arch for anchorage Abutment is not free to tilt Equal and opposite movement in anchor unit 18. Hand wrist radiograph in orthodontics are used to accurately determine: Chronological age Both A and B Skeletal maturity Dental age 19. Eruption path of posterior maxillary permanent teeth is directed: Downward and distal Downward and labial Downward and buccal Downward and mesial 20. Maxillary skeletal arch expansion increases overbite. requires surgery in skeletally immature patients. decreases arch space. is easiest in the preadolescent patient. Loading … Question 1 of 20