Orthodontics AND Pediatric Revalida 2021 PDF

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ORTHODONTICS AND PEDIATRICDENTISTRY Trident factor of oral habit which is now considered as the most important contributory factor to development of malocclusion: ○ Intensity ○ Frequency ○ Blank ○ duration A linguoverted max. Premolar with respect to midsagittal plane is said to be in? ○ Protraction...

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REVALIDA ORTHODONTICS AND PEDIATRIC DENTISTRY 1. Trident factor of oral habit which is now considered as the most important contributory factor to development of malocclusion: ○ Intensity ○ Frequency ○ Blank ○ duration 2. A linguoverted max. Premolar with respect to midsagittal plane is said to be in? ○ Protraction ○ Retraction ○ Attraction ○ Contraction ○ Abstraction 3. What are the growth dimensions in the maxilla that are sex-linked? ○ Height and depth ○ Height and width ○ Width and depth ○ width 4. Generalized osteoclastic activity along the walls of the alveolar socket is the bone response to ○ Extrusion ○ Rotating force ○ Elongating force ○ Depressing force 5. Late mesial shift is possible because of ○ Space differential bet. Deciduous and permanent teeth in the posterior segment ○ Primate spaces ○ None of the above ○ Terminal plane 6. In adult patient with excessive overbite the lower facial height in relation to the upper and lower middle third is: ○ Markedly short ○ Blank ○ Markedly long ○ Normal 7. Orthodontic correction of which of the following is most easily retained? ○ Posterior crossbite ○ Diastema ○ Expansion ○ Rotation

○ Crowding of anterior teeth ○ Spacing of anterior teeth ○ Labioversion of anterior teeth 9. Which of the following conditions is usually present in a Class II, division 2 malocclusion? ○ Open bite ○ Mesiocclusion of permanent first molars ○ Steep mandibular plane ○ Lingual inclination of maxillary central incisors 10. Increase in breadth means increase in ○ Length ○ Width ○ Vertical dimension ○ Depth ○ height 11. The action taken to preserve the integrity of what appears to be normal occlusion at a specific time: ○ Limited corrective orthodontics ○ Extensive corrective orthodontics ○ Preventive orthodontics ○ Interceptive orthodontics 12. A face that is broad and short is: ○ Dolichofacial ○ Normofacial ○ Mesofacial ○ Brachyfacial 13. It is the synchondrosis whose activity stops after age of 25. ○ Sphenoethmoidal ○ Intersphenoidal ○ Spheno-occiptal ○ Intraoccipital 14. Anterior crossbite in the primary dentition usually indicates a developing: ○ Class III malocclusion ○ Class I malocclusion ○ Class II malocclusion ○ Class IV malocclusion 15. Inclined plane should not be left in the mouth for more than 2 months to prevent creation of: ○ Posterior cross bite ○ Anterior open bite ○ Anterior cross bite ○ Posterior open bite 16. Continued apposition of alveolar bone on the free borders of the alveolar process as

○ Anterior crossbite 8. Crowding of permanent posterior teeth may be due to: ○ Mesial drifting of permanent first molar

the teeth erupt increases the __ of the maxilla. ○ Blank ○ Width ○ Length 1

REVALIDA 25. The major criterion to differentiate between ○ Height a true class III and a pseudo- class III 17. Which of the following cannot be assessed malocclusion is: from cephalometric radiographs? ○ Degree of anterior crossbite ○ Mandibular retrusion ○ Occlusal relationship maxillary and ○ Incisor inclination mandibular first molar ○ Adequacy of dental arch perimeter ○ Direction of mandibular growth ○ Existence of a forward shift of the 18. Cases of maxillary protrusion in a growing mandible during closure child can be treated with ○ Presence of bilateral crossbite 26. A supra erupted mand. Canine with respect ○ Fixed braces only to Frankfort horizontal plane is said to be in? Chin cap ○ ○ Face mask ○ Attraction ○ Headgear ○ Protraction 19. The correct angulation of the inclined plane ○ Retraction in relation to the tooth in crossbite is: ○ Contraction ○ 35° ○ Abstraction 27. Orthodontic correction of which of the ○ 45° following is most easily retained? ○ 55° 15° ○ Expansion ○ ○ Posterior crossbite ○ 25° 20. At age 4-5, what normal sign of primary ○ Anterior crossbite dentition augers well for the erupting ○ Diastema permanent incisors in terms of space ○ Rotation availability: 28. The maxilla is displaced downward and forward by growth in ___ parts of the bone: ○ Class I cuspid relationship ○ Growth spaces, interdental spaces ○ Posterior and anterior Flush terminal plane ○ ○ Anterior and superior ○ Anterior and inferior ○ Upright vertical incisor relationship 21. The arrangement of 2 forces of equal ○ Posterior and superior magnitude and opposite but non collinear 29. Interstitial growth is observed at which of lines of action: the following sites? 1. Spheno-occipital synchondrosis ○ Center of rotation 2. Maxillary tuberosity ○ Center of resistance 3. Mandibular condyle ○ Moment 4. Zygomaticomaxillary suture Couple ○ 5. Apex of an erupting premolar 22. This will decrease lower arch perimeter during transitional period: ○ 2&4 ○ 2&5 ○ Distal tipping of lower cuspid Late mesial shift of first permanent ○ 1&2 ○ molar ○ 1&4 ○ 1&3 ○ Labial position of permanent incisors 30. When a simple tipping force is applied to ○ Blank 23. Frankfort-horizontal is a reference plane the crown of a single-rooted tooth, the constructed by joining which of the center of rotation is usually located: following landmarks? ○ Two- third the root length from the apex ○ Porion and orbital Porion and sella ○ ○ 5mm beyond the apex ○ Porion and nasion ○ At the apex ○ Nasion and sella ○ One-third the root length from the apex 24. The following are factors that will compensate incisor liability, except: ○ At the cervical line 31. The sutures of the nasomaxillary complex ○ Intercanine width growth

○ Favorable tooth size ratio ○ Upright position of primary incisors ○ Labial positioning of permanent incisors

are oblique and more or less parallel with each other thus, growth in these areas would serve to displace the maxilla: ○ Downward and forward 2

REVALIDA ○ Upward and backward ○ Forward and upwards ○ downward 32. The “V” principle of growth is best illustrated by the: ○ Nasal septum ○ Mandibular ramus ○ Mandibular symphysis ○ Spheno-occiptal synchondrosis 33. Form birth to 5 years, the dominance of growth is on the ○ nasomaxillary structures ○ Mandible ○ Cranial structures ○ Muscular structures ○ Muscular components of the body 34. It is considered to be the best space maintainer ○ A well restored deciduous teeth ○ Functional space maintainer ○ Crown and crib ○ Fixed space maintainer 35. The profile of the patient with protruded mandible and retruded maxilla is: ○ Convex ○ Straight ○ Concave ○ Blank 36. The best appliance for 7 years old child with Class 1 type 3 (inlocked maxillary central incisor) is ○ Cross bite elastics ○ Myofunctional appliance ○ Mandibular acrylic inclined plane ○ Band and crib 37. Proximal caries, if not restored, will __ the arch length ○ Blank ○ Not affect ○ Decrease ○ increase 38. Effect of abnormal eruptive path ○ Delayed eruption ○ Elongation of adjacent teeth ○ Space loss ○ Increase in arch length ○ Deflection of eruption 39. Nasomaxillary complex is hafled to the cranium by the following sutures except: ○ Zygomaticotemporal ○ Frontotemporal ○ Pterygopalatine

○ By environmental factors ○ Two of the choices ○ By muscles 41. This aims to recognize and eliminate potential irregularities and malpositions in the developing craniofacial complex: ○ Extensive corrective orthodontics ○ Preventive Orthodontics ○ Limited Corrective orthodontics ○ Interceptive Orthodontics 42. The appliance to be used in correcting the anterior crossbite is determined by the: ○ Amount of overbite ○ All of these ○ Age of the patient ○ Cooperation of the patient 43. Chin cap Is used to redirect the growth of the ○ Cranial base ○ Mandible ○ Maxilla ○ Cranial case 44. The arrangement of 2 forces of equal magnitude and opposite but non collinear lines of action: ○ Moment ○ Couple ○ Center of resistance ○ Center of rotation 45. A supra erupted max. Canine with respect to Frankfurt Horizontal plane is said to be in? ○ Attraction ○ Retraction ○ Abstraction ○ Protraction ○ Contraction 46. Two or more teeth moving in opposite directions and pitted against each other by the appliance. Usually, the resistance to each other is equal and opposite. The anchorage is: ○ Reciprocal ○ Stationary ○ Simple ○ extraoral 47. Crowding of permanent posterior teeth may be due to: ○ Crowding of anterior teeth ○ Spacing of anterior teeth ○ Mesial drifting of permanent first molar

○ Zygomaticomaxillary ○ Frontomaxillary 40. The basic form of the arch is determined: ○ In intrauterine life

○ Labioversion of anterior teeth 48. Effect of abnormal eruptive path ○ Space loss ○ Increase. In arch length 3

REVALIDA 57. A Distal shoe space maintainer is indicated ○ Deflection of eruption when a primary: ○ Elongation of adjacent teeth ○ Delayed eruption ○ Second molar is lost before 49. The order from the greatest to least change eruption of a permanent first molar of the dimension of the cranium: ○ Second molar is lost after eruption of a permanent first molar ○ Width, height, depth ○ Depth, height, width ○ First molar is prematurely lost ○ Height, depth, width ○ Incisor is avulsed 58. Gingival margin of a tooth that will receive a ○ Depth, width, height 50. he order from the least to greatest change stainless stress crown should have a ___ of the dimension of the cranium: finish line ○ Width, height, depth ○ Blank ○ Height, depth, width ○ Shoulder ○ Depth, width, height ○ BOTH Depth, height, width ○ ○ Feather edge 59. Poor personal experiences in the dental 51. Primary second molar usually erupt during office: ages: ○ Hostile parents ○ 14-20 months 30-36 months ○ ○ Manipulative parent ○ 20-30 months ○ Overprotective parent ○ Neglectful parent ○ 36-48 months 60. Reluctant to accept treatment: ○ 8-14 months 52. The purpose of pulp treatment and root ○ Positive canal filling is to: ○ Negative ○ Enlarge the root canal ○ Definitely negative ○ Remove pulpal tissue ○ Definitely positive 61. In acute ingestion of fluoride, the following Blank ○ can be given to the patient to counteract its ○ Prolong the usefulness of a tooth to function in mastication effect, Except: 53. Lack of anatomic detail of dental restoration ○ Milk of magnesia procedures: ○ Alum ○ 2 tsp of ipecac syrup ○ Elongation of opposing teeth ○ milk ○ Elongation of adjacent teeth 62. The least desirable method used in child ○ Blank management is: Increased arch length ○ 54. A child in the “ugly ducking” stage is ○ Tell-show-do technique characterized by ○ Hand-over-mouth technique ○ Voice control ○ Absence of maxillary incisors A flat nasal bone ○ Gift before treatment ○ 63. Uses the principles of learning theory: ○ Presence of only one maxillary central incisor ○ Blank ○ Behavior management ○ Diastema between 2 central incisors ○ Behavior shaping 55. Induce formation of apical closure of young ○ Behavior modification permanent molar using CAOH 64. The maximum number of cartridges of 2% lidocaine with 1:100,000 epinephrine for a ○ Apoxogenesis 40 pound child patient is: Apexification ○ ○ Apeximation ○ 9 ○ Apex formation ○ 5 56. The following irrigating solution can be used ○ 7 as irrigant in pulpectomy procedure except: ○ 3 ○ Distilled water ○ 10...