1. Congenital absence of tooth is due to aberration inMorphodifferentiationHistodifferentiationAppositionInitiationQuestion 1 of 20 2. Which group listed below of the principal fibers of the periodontal ligament runs perpendicular from the alveolar bone to the cementum and resists lateral forces?Alveolar crestHorizontalObliqueApicalQuestion 2 of 20 3. Which two muscles form a sling around the mandibleMasseter and temporalisMedial pterygoid and lateral pterygoidMasseter and medial pterygoidMasseter and lateral pterygoidQuestion 3 of 20 4. Following root canal therapy, gutta percha extending beyond the apex of which tooth is most likely to impinge on the mental foramen?Mandibular canineMandibular 1st premolarMandibular 2nd premolarMandibular 1st molarQuestion 4 of 20 5. The mandible functions as which type of lever?Class IClass IIClass IllAll of the aboveQuestion 5 of 20 6. Level of sensitivity to pain is least inbuccal mucosagingivadorsal lingual mucosalabial mucosaQuestion 6 of 20 7. The character of occlusal contacts in the unworn dental arch are all of the following, except:Point-to-pointPoint-to-areaEdge-to-edgeArea-to-areaQuestion 7 of 20 8. Bilateral contraction of the posterior fibers of the temporalis muscles results in which mandibular movement listed below?RetrusionProtrusionOpeningClosingQuestion 8 of 20 9. How many planes of movement can the mandible move in?OneTwoThreeFourQuestion 9 of 20 10. The red zones of lips have30%sebaceous glands75% sebaceous glandsVery small number of sebaceous glands if anyAbsolutely no sebaceous glandsQuestion 10 of 20 11. Which papillae are completely keratinisedFungiformFiliformCircumvallateFoliateQuestion 11 of 20 12. All of the following muscles are infrahyoid muscles, except the:Thyrohyoid muscleSternohyoid muscleOmohyoid muscleMylohyoid muscleQuestion 12 of 20 13. Which component of the free gingiva listed below fills the embrasure space between the area of tooth contact?Free gingival grooveGingival sulcusGingival marginlnterdental gingivaQuestion 13 of 20 14. When the posterior teeth are in crossbite relationship Which of the following cusps are considered supporting cuspsmaxillary facial and mandibular facialmaxillary facial and mandibular lingualmaxillary lingual and mandibular facialmaxillary lingual and mandibular linguaQuestion 14 of 20 15. premaxilla is formed fromfusion of medial nasal processesfusion of lateral nasal processesfusion of 2 palatal shelvesextension of nasopalatine processQuestion 15 of 20 16. The shape of temporalis muscle isFan shapedFunnel shapedPear shapedHeart shapedQuestion 16 of 20 17. Odland bodies are seen inStratum granulosumStratum spinosumStratum corneumBoth A and BQuestion 17 of 20 18. Which anterior tooth has the greatest faciolingual-to-mesiodistal length ratio when viewed from the occlusal?Maxillary central incisorMaxillary lateral incisorMandibular central incisorMandibular lateral incisorQuestion 18 of 20 19. When distinguishing a mandibular canine from a maxillary canine, all of the following are true, except:On a mandibular canine, the mesial border is much straighter (viewed facially)The cusp tip is displaced lingually on the mandibular canine, whereas on the maxillary canine the cusp is on or labial to the root axis line (viewed proximally and incisally)The mandibular canine has a comparatively wider mesiodistal dimension (viewed facially)The mandibular canine has a cingulum that is less pronounced and often slightly to the distal, whereas the maxillary canine has a cingulum that is more pronounced and centered mesiodistally (viewed lingually)Question 19 of 20 20. The prime mover in effecting a left working-side movement is:The right medial pterygoid muscleThe left medial pterygoid muscleThe right lateral pterygoid muscleThe left lateral pterygoid muscleQuestion 20 of 20 Loading...