1. The highest critical surface tension is for which of the orthodontic brackets Polycarbonate Titanium Ceramic alumina Stainless steel 2. Which is the most stable and the most often used plane for the superimposition of lateral cephalogram for studying the growth of a child? Mandibular plane Occlusal plane Frankfort plane S-N plane 3. The permanent maxillary canine most commonly erupts before the mandibular permanent canine. after the maxillary second permanent molar. before the maxillary first premolar. before the maxillary second permanent molar. 4. With a flush terminal plane, permanent first molars will erupt in: Initially Class II relation Erupt immediately into an end on relation Initially Class III relation Will assume a normal relationship immediately 5. A single tooth anterior crossbite found in a 9 year old should have 2 arch orthodontic treatment. self-correct. be treated with a removable appliance. be treated in the complete permanent dentition. 6. Inability to produce bilabial sounds properly like /b/ and /p/ along with lisp like sounds is seen in which malocclusion: Class I type 4 Class I type 3 Class II division 1 with incompetent lips Class III with competent lips 7. Serial extraction is indicated in: Class I malocclusion Class III malocclusion Class II malocclusion Open bite malocclusion 8. Exclusive of third molars, the permanent dentition is usually completely erupted by the age of 9 to 11 years. 12 to 14 years. 15 to 17 years. 18 to 21 years. 9. Which of the following metals shows the property of twinning Nickel titanium alloy All of the above Stainless steel Cobalt chromium 10. Areas of isolated gingival recession are most frequently seen on teeth that are moderately mobile. nonvital. labially prominent in the arch. ankylosed. 11. Fishman’s index is used for: Estimation of body surface area Studying chronologic age Estimation of dental age Studying skeletal maturity 12. Which analysis uses the measurement of lower incisors to calculate dimensions of posterior teeth: Huckaba analysis Bolton’s analysis Moyers analysis Nance analysis 13. Xi point is seen in which of the following analysis: Sassouni analysis Ricketts Steiner Down 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. Most favorable for reinforcement of anchorage is: Conical roots Tooth with intact proximal contacts Shifting centre of resistance apically Tooth out of occlusion 16. Which of the following materials is not used as antiflux? Rouge Boric acid Calcium carbonate in alcohol Graphite 17. Which of the following model analysis would be useful in planning extractions tor a 14 year old boy with severe Class II division 1 malocclusion Fonts analysis Bolton’s analysis Peck & Peck analysis Ashley Howe analysis 18. 12 primary and 12 permanent teeth seen at what age in a child: 11.5 6.5 13.5 8.5 19. Branch of orthodontics concerned with management of teeth in mixed dentition period is called: Interceptive orthodontics Corrective orthodontics Preventive orthodontics Surgical orthodontics 20. Maxillary 1st molar cusp used in Angle classification Mesiolingual Mesiobuccal Distobuccal Distolingual Loading … Question 1 of 20
