Dental Anatomy Unit 2 Quiz PDF

Dental Anatomy Unit 2 Tooth Elevations and Root Canals 1. A small elevation of enamel on a tooth surface is known as: a. cusp b. tubercle c. sulcus d. fossa 2. The permanent premolar most likely to have two root canals is: a. maxillary first premolar b. maxill...

Dental Anatomy Unit 2 Tooth Elevations and Root Canals 1. A small elevation of enamel on a tooth surface is known as: a. cusp b. tubercle c. sulcus d. fossa 2. The permanent premolar most likely to have two root canals is: a. maxillary first premolar b. maxillary second premolar c. mandibular first premolar d. mandibular second premolar Maxillary Premolars Characteristics 3. Least typical for the maxillary second premolar: a. The lingual cusp is slightly shorter than the facial cusp. b. The facial cusp is slightly larger than the lingual cusp. c. The two cusps are approximately the same length. d. The facial cusp is shorter and blunter compared with the lingual cusp. 4. Comparison of the two cusps of the maxillary first premolars: a. The facial cusp is longer but not wider. b. The lingual cusp is both shorter and narrower. c. The facial cusp is shorter but wider. d. The lingual cusp is both longer and wider. Maxillary First Premolars Traits 5. Not true of maxillary first premolars: a. Commonly bifurcated root. b. Single root trunk. c. Facial cusp tip displaced to the distal from midline. d. The roots are the mesial and distal. Tooth Eruption and Bifurcation 6. Teeth that erupt last: a. Mandibular first premolars b. Maxillary canines c. Maxillary first premolars d. Mandibular canines 7. Least likely to be bifurcated: a. Maxillary second premolar b. Mandibular canine c. Mandibular first premolar d. Mandibular second premolar Root Canals and Eruption Patterns 8. Least likely to have two root canals: a. Mesiobuccal root of a maxillary molar b. Mesial root of the mandibular molar c. Maxillary premolar d. Mandibular canine 9. First permanent teeth to erupt: a. Maxillary first molars b. Mandibular first molars c. Mandibular central incisors d. Maxillary central incisors Molars and Their Characteristics 10. Teeth with the fewest proximal contact areas: a. Central incisors b. Third molars c. Canines d. Premolars 11. Class traits of all molars: a. Largest occlusal surfaces of any teeth in the dentition. b. Three to five major cusps. c. Two or three roots. d. All of the above. Maxillary Molar Features 12. The ridge connecting the distobuccal and mesiolingual cusps on a maxillary molar is called: a. Mesiolingual ridge b. Triangular ridge c. Carabellian ridge d. Oblique ridge Malocclusion and Incisor Characteristics 13. In Class II, Division II malocclusion, maxillary incisors are: a. Retruded b. Protruded c. Edge to edge d. In crossbite 14. Maxillary laterals exhibit: a. Same number of lobes as first molars b. Same number of lobes as first premolars c. Two labial and two lingual lobes d. Three lobes only Clinical Case Study 15. A 9-year-old with a gingival abscess on a deciduous molar would likely exhibit: a. No permanent teeth other than first molars b. Mixed dentition c. Evidence of facial trauma d. Evidence of severe periodontal disease 16. Appropriate treatment for an abscessed deciduous second molar: a. Root resection b. Periodontal surgery c. Extraction of the affected tooth d. Splinting the deciduous molars together 17. If the molar was removed, which would not be true: a. A space maintainer is probably not necessary. b. The permanent replacement should erupt soon. c. His eruption pattern is earlier compared with most children his age.  d. The deciduous root, if still present, would be very small. Tooth Width and Cusp Characteristics 18. From the occlusal view, the tooth wider on the lingual side than on the buccal side is: a. Maxillary central incisor b. Mandibular first molar c. Maxillary first molar d. Mandibular first premolar e. Mandibular second premolar 19. The cusp of Carabelli of the permanent maxillary first molar may be: a. Absent b. Located lingual to the distolingual cusp c. The third largest cusp d. All of the above. 20. The longest and shortest cusps of the maxillary first molar are: a. Mesiofacial and distofacial b. Mesiolingual and distofacial c. Mesiolingual and distolingual d. Distofacial and distolingual Class I Occlusion and Incisor Differences 21. In Class I occlusion, the mandibular lateral incisor: a. Opposes the maxillary lateral incisor and canine b. Opposes only the maxillary lateral incisor c. Opposes maxillary central and lateral incisors d. Is free of contact with opposing teeth 22. Compared with the permanent mandibular central incisor, the root of the mandibular lateral incisor is: a. Larger in all dimensions b. Longer but not wider c. Wider but not longer d. The same size Similarities and Differences in Incisors 23. Morphological differences between mandibular lateral and central incisors:  a. The mandibular lateral incisor is usually slightly larger. b. The mandibular lateral incisor has an elongation of the distoincisal angle distolingually. c. When viewed incisally, the crown appears slightly rotated on its base. d. All of the above. 24. In comparison with the permanent maxillary canine, the permanent mandibular canine has a mesiodistal crown width that is: a. Somewhat wider b. Somewhat narrower c. Identical d. A great deal wider Canine Characteristics 25. In comparison with the mandibular canine, the maxillary canine: a. Has a relatively longer crown b. Is less likely to be bifurcated c. Has a less pronounced cingulum d. Has less prominent lingual features 26. The anterior tooth that exhibits the most deviation in morphology is: a. Mandibular central incisor b. Maxillary canine c. Maxillary lateral incisor d. Mandibular lateral incisor Smallest Permanent Tooth 27. The smallest permanent tooth in the mouth is: a. Maxillary central incisor b. Mandibular central incisor c. Maxillary lateral incisor d. Mandibular lateral incisor 28. The anterior tooth most likely to have two root canals is: a. Mandibular lateral incisor b. Maxillary canine c. Maxillary central incisor d. Mandibular canine Tooth Measurements and Root Characteristics 29. Mesiodistal measurements of anterior teeth crowns indicate: a. Wider at the mesial than the distal b. Wider at the distal than the mesial c. Wider at the lingual than the facial d. Wider at the facial than the lingual 30. The largest, longest, and strongest root of the maxillary molar is: a. Facial b. Lingual c. Mesiofacial d. Distofacial Maxillary Third Molar Features 31. The cusp frequently missing from the maxillary third molar is: a. Mesiofacial b. Distofacial c. Distolingual d. Mesiolingual 32. The oblique ridge of maxillary molars crosses the occlusal surface from: a. Mesiobuccal to mesiolingual b. Mesiolingual to distofacial c. Distofacial to distolingual d. Mesiobuccal to distolingual Mandibular Molar Characteristics 33. The lingual height of contour on mandibular molars is located: a. Middle third b. Occlusal third c. Cervical third d. At the junction of occlusal and middle thirds 34. The crowns of mandibular molars are aligned in the alveolar bone such that they are: a. Tilted to the distal and facial side b. Tilted to the lingual side but upright otherwise c. Upright in all directions d. Tilted toward the mesial and lingual Root Canal Characteristics 35. The permanent mandibular first molar usually has: a. Two root canals in the mesial root, one in the distal b. One root canal in the lingual root, one in the facial c. Two root canals in both the mesial and distal roots d. One root canal in each root Congenitally Missing Teeth 36. The four most frequently found congenitally missing teeth are: a. Maxillary first premolar, maxillary lateral incisor, mandibular lateral incisor, and mandibular third molar b. Maxillary third molar, maxillary lateral incisor, mandibular canine, and mandibular third molar c. Maxillary third molar, mandibular third molar, maxillary lateral incisor, and mandibular second premolar d. Maxillary third molar, maxillary first premolar, mandibular third molar, and mandibular canine Distinguishing Features of Primary Teeth 37. The greatest convexity of the facial surface of anterior teeth is: a. Different from that of posterior teeth b. The cervical third c. The middle third d. The junction of middle and incisal thirds 38. Not a set trait of the deciduous dentition: a. Most primary teeth are smaller than their succedaneous permanent teeth. b. The crowns of primary teeth seem long relative to their total length compared with permanent teeth. c. In anterior primary teeth, the labial and lingual surfaces bulge conspicuously in the cervical third. d. Primary crowns are milk white in color. e. The enamel is thinner in primary teeth and the pulp chamber is larger. Deciduous Teeth Characteristics 39. The most distinguishing feature of the maxillary first deciduous molar is:  a. Cusp relationship b. Buccal cervical ridge c. Mesial profile d. All of the above 40. A child 14 months of age should normally have the following deciduous teeth present: a. Central incisors, lateral incisors, canines, first molars, second molars b. Central incisors, lateral incisors, canines, first molars c. Central incisors, lateral incisors, first molars, second molars d. Central incisors, lateral incisors, canines e. Central incisors, lateral incisors, first molars Unique Deciduous Teeth 41. Deciduous teeth that do not resemble any other deciduous or permanent teeth: a. Deciduous mandibular first molar b. Deciduous mandibular second molar c. Deciduous maxillary first molar d. Deciduous maxillary second molar e. a and c 42. Teeth that have three roots: a. Permanent mandibular molars b. Permanent maxillary premolars c. Deciduous maxillary molars d. Permanent maxillary molars e. a, c, and d f. c and d Cusp of Carabelli and Smallest Tooth 43. The cusp of Carabelli of the permanent maxillary first molar is sometimes: a. Located on the distolingual cusp b. Missing entirely c. Located on the lingual surface d. Located on the mesiolingual cusp e. a, c, and d f. b, c, and d 44. The smallest tooth in the human dentition is: a. Deciduous mandibular central incisor  b. Deciduous mandibular lateral incisor c. Permanent mandibular central incisor d. Permanent mandibular lateral incisor Differences Between Incisors 45. Differences between permanent mandibular and maxillary incisors: a. Maxillary incisors are smaller. b. The mandibular lateral incisor is larger than the central incisor. c. Maxillary incisors have fewer pits and less-developed marginal ridges. d. Mandibular incisors have more developed cingula. 46. Excess spaces in the deciduous dentition for permanent canines and premolars are called: a. Freeway space b. Primate space c. Interdental space d. Leeway space e. b and d Root Canal Characteristics and Abscesses 47. The permanent tooth most likely to have two root canals: a. Maxillary second premolar b. Mandibular central incisor c. Maxillary lateral incisor d. Maxillary central incisor e. Maxillary canine 48. Possible interpretations of a dark radiolucent area at the apex of a mandibular second premolar: a. An endodontic abscess b. A cementoma at the apex of the tooth c. The mental foramen d. a, b, or c 49. An abscessed tooth's response to heat stimulation: a. Both statements are true. b. Both statements are false. c. The first statement is true; the second is false. d. The first statement is false; the second is true. Space Maintainers in Deciduous Dentition 50. If lost 1 year prematurely, the deciduous tooth most likely necessitating a space maintainer: a. Deciduous mandibular canine b. Deciduous mandibular first molar c. Deciduous mandibular second molar d. Deciduous maxillary first molar