1. The most appropriate time for surgical treatment of a patient with mandibular prognathism isjust after eruption of the second permanent molars.following the completion of growth.just after the end of the prepubertal growth spurt.just before eruption of the second permanent molars.Question 1 of 20 2. Progressive malocclusion is:Class IClass IIIA+CClass IIQuestion 2 of 20 3. Malocclusion is most often:Caused by bad habitsCaused by antibioticsHereditaryCaused by traumaQuestion 3 of 20 4. In EMG, activity of mentalis muscle was detected very high. The patient might have:Class-II division-1 malocclusionClass-I malocclusionClass-II division-2 malocclusionClass-III malocclusionQuestion 4 of 20 5. Australian wire, which is round austenitic wire most commonly used in Begg differential light force technique, is manufactured by:Heat treated and cold drawnSpring drawn and cold treatedAnnealed and cold drawnCold treated and heat drawnQuestion 5 of 20 6. Orthodontic elastomerics are made ofAll of the abovePolyetherPolysulfidePolyurethanesQuestion 6 of 20 7. Condition of mouth breathing usually showsHypertonic upper lipHypotonic upper lipHypotonic lower lipHypertonic lower lipQuestion 7 of 20 8. In an adult patient the C-res liesShifted more cervicallyAt incisal edge of crownShifted more apicallyAt.the center of rootQuestion 8 of 20 9. Direction of growth of maxilla:Downward and backwardDownward and forwardUpward and backwardUpward and forwardQuestion 9 of 20 10. 12 yr old patient comes with retained primary mandibular second molar and radiograph shows congenitally missing second premolar. Most conservative approach would beExtraction of 11d molar and allowing the rest to migrate in its positionExtraction of 2nd molar and Transplantation of third molar in its place.Extraction of 2nd molar and giving a bridgeRetain the 2nd molar with minimum proximal contact strippingQuestion 10 of 20 11. In mandibular rotation what is the contribution of total matrix and intra matrix rotation:0% intramatrix; 100% matrix25% matrix; 75% intramatrix100% intramatrix; 0% matrix50% intramatrix; 50% matrixQuestion 11 of 20 12. Which is the most important factor in habitsIntensityType of habitFrequencyAgeQuestion 12 of 20 13. COGS analysis was given by:Burstone and NandaBurstone and MerillBurstone and LevineBurstone and LeganQuestion 13 of 20 14. Prior to the correction of a one tooth anterior crossbite, the principle factor to consider is thesequence of eruption of the permanent dentition.morphology of the anterior teeth.adequacy of mesio-distal space.developmental age of the patient.Question 14 of 20 15. An Angle Class II, division 1 malocclusion can be differentiated from an Angle Class II, division 2 malocclusion based upon theseverity of the Angle Class II malocclusion.inclination of maxillary incisors.molar relationship.amount of overbite.Question 15 of 20 16. X-occlusion is commonly found among:South Pacific islandersAfrican populationOriental populationAustralian arboriginesQuestion 16 of 20 17. The most common clinical characteristic of a functional crossbite ispain on closure.midline deviation.severe crowding.arch asymmetry.Question 17 of 20 18. Increased ANB angle signifies:Retrognathic mandible.Bimaxillary protrusionPrognathic mandibleRetrognathic maxillaQuestion 18 of 20 19. Ideal orthodontic tooth movement involveslarge forces.undermining resorption.frontal resorption.subcrestal incisions.Question 19 of 20 20. According to the NORMS of the orthodontic study models, the total height of maxillary n mandibular model should be close to?70 mm60 mm90 mm55 mmQuestion 20 of 20 Loading...