1. How much overjet can be successfully managed using dentofacial orthopedics: 14-18 mm 0-7 mm 10-14 mm 5-7 mm 2. Spheno-occipital synchondroses fuses by what age: 13 years 16 years 9 years 3 years 3. 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 4. Serial extraction is indicated in: Open bite malocclusion Class II malocclusion Class I malocclusion Class III malocclusion 5. Foetus develops infantile swallow and suckling by: At birth 32 weeks IU life 28th week of IU life After birth 6. Pitch of the hyrax screw is? 0.8 mm 1.2 mm 0.5 mm 0.25 mm 7. Direction of growth of maxilla: Downward and forward Downward and backward Upward and backward Upward and forward 8. COGS analysis was given by: Burstone and Merill Burstone and Legan Burstone and Levine Burstone and Nanda 9. A 6 year old patient has a larger than average diastema between the maxillary central incisors. The radiographic examination shows a mesiodens. In order to manage the diastema, you should extract the mesiodens as soon as possible. only if it develops into a cystic lesion once the patient has reached the age of 12. after its complete eruption. 10. Alveolar bone is undergoing remodelling until the complete eruption of permanent teeth. through the primary dentition. until the end of mixed dentition. throughout life. 11. In a 17 year old male with a vertical growth pattern, deep anterior bite and crowding of dentition requires orthodontic treatment. In such a case, correction of deep bite while maintaining mandibular plane can be achieved by: Relative intrusion of anteriors Absolute intrusion of posteriors Absolute intrusion of anteriors Relative extrusion of posteriors 12. 12 yr old patient comes with retained primary mandibular second molar and radiograph shows congenitally missing second premolar. Most conservative approach would be Retain the 2nd molar with minimum proximal contact stripping Extraction of 2nd molar and Transplantation of third molar in its place. Extraction of 2nd molar and giving a bridge Extraction of 11d molar and allowing the rest to migrate in its position 13. Which analysis uses the measurement of lower incisors to calculate dimensions of posterior teeth: Moyers analysis Nance analysis Bolton’s analysis Huckaba analysis 14. While treating increased anterior overbite while keeping mandibular plane angle same, increase in molar height is compensated by: Absolute intrusion Absolute extrusion Relative intrusion Relative extrusion 15. Retrusion and protrusion of the mandible cannot be measured by which radiographic cephalometric variable? N-Pog perpendicular Facial angle ANB Facial axis 16. Tooth most likely to be displaced in case of mandibular arch crowding is: 1st premolar 1st molar 2nd molar 2nd premolar 17. Branch of orthodontics concerned with management of teeth in mixed dentition period is called: Interceptive orthodontics Corrective orthodontics Surgical orthodontics Preventive orthodontics 18. The highest critical surface tension is for which of the orthodontic brackets Stainless steel Ceramic alumina Titanium Polycarbonate 19. According to the NORMS of the orthodontic study models, the total height of maxillary n mandibular model should be close to? 90 mm 60 mm 55 mm 70 mm 20. In a case with Class II malocclusion in a growing child, why is deep bite corrected before overjet: To achieve faster tooth movement To remove mechanical obstruction in normal mandibular anterior shift To reduce palatal trauma due to traumatic deep bite To aid in bonding brackets to lower anterior teeth Loading … Question 1 of 20
