PA EFDA Exam Prep Questions and Answers 2023

PA EFDA Exam Prep Questions and Answers 1. Cingulum: a bulge or prominence of enamel found on the cervical third of the lingual surface of an anterior tooth. 2. Cusp: a major developmental convexity on or near the occlusal surface of a posterior tooth. 3. Cusp: Found on the incisal edges of canines, 4. Cusp: a premolar usually has two of these on the buccal and lingual sur- faces.Mandibular second premolar may sometimes have three of these. 5. Cusp Of Carabelli: Only found on the maxillary first molars 6. Cusp of Carabelli: only found on tooth #3 and #14 7. Cusp of Carabelli: The fifth cusp, located on the mesial-lingual surface of many maxillary first molars. 8. Cusp: Maxillary first and second molars and mandibular second molars usually have four of these 9. Fossa: irregular depressions or concavities on the surface of anterior and posterior teeth 10. : 11. Central Fossa: the depression or concavity found in the central portion of the occlusal surface of molars 12. Ridge: The linear elevation on the surface of a tooth. 13. Marginal Ridge: The rounded boarder of enamel that forms the mesial and distal boundaries of the occlusal surface of molars and premolars 14. Marginal Ridge: the mesial and distal boundaries of the lingual surfaces of incisors and cuspids. 15. Triangular Ridge: a ridge on a molar or premolar that descends from the tips of the cusp towards the central part of the occlusal surface. 16. Transverse Ridge: the ridge formed by two triangular ridges that extend across the surface of posterior teeth. 17. Oblique Ridge: Ridge crossing the occlusal surface of only maxillary molars in an oblique direction 18. How many major fossa's are there: 4 lingual Fossa Central Fossa Mesial and Distal triangular fossa 19. Lingual Fossa: depression or concavity found on the lingual surface of mandibular and maxillary incisors located between the mesial and distal marginal ridges 20. Triangular Fossa: located on the occlusal surface of the molars and premolars distal to the mesial marginal ridge and mesial to the distal marginal ridge 21. Triangular Fossa: are always bordered by three developmental ridges one of which is the marginal ridge named according by there location 22. Developmental Grooves: major grooves or lines between the ridges of a tooth named according to there location 23. Supplemental groove: grooves that are less distinct, shallow linear depres- sion on the surface of teeth and are supplemental to developmental grooves , do not mark he junction on primary parts of a tooth 24. Spillway: a shallow depression adjacent to a developmental groove located on the occlusal surface of posterior teeth, originating in the mesial and distal triangular fossa,and extending over the mesial and distal marginal ridges towards the buccal and lingual embrasure areas 25. Spillway: provides an escape for food from the occlusal surface during the mastication process 26. Pit: a small pin point depression located at the junction of developmental grooves at the termination of those grooves. 27. Fissure: developmental or supplemental grooves with incomplete closure of enamel an explorer may catch or stick because the incomplete closure of the enamel 28. Wall: a vertical or horizontal surface within cavity preparation named for the surfaces toward which it faces or for a structure it approximates 29. Cavosurface: the uncut tooth structure adjacent to the cavity preparation. 30. Line angle: A line formed along the junction of two walls or of one wall and the cavosurface margin and named according to the walls and services involved 31. Point angle: A point formed by the junction of three walls within a cavity preparation and named according to the three Walls involved 32. Retentive features: Retentive features Grooves pits or prepared areas in the Dentin along the line angles or point angles of the preparation to enhance the mechanical retention of the restorative materials and named according to their location 33. Mamelons: Three bulges on the inside so edge of the newly irrupt it essential incisor which usually disappear from attrition 34. Cingulum: A convex area on the lingual surface of anterior teeth near the gingiva 35. Furcation: The dividing point of a multi rooted tooth 36. Mesial: The surface towards the midline 37. Distal: The surface away from the midline 38. Labial: The outside surface which is towards the lips 39. Lingual: The inside surface which is toward the tongue 40. Palatal: On the maxillary arch towards the palate 41. Buccal: The outside surface which is towards the cheek 42. Occlusal: The chewing surface on posterior teeth 43. Incisal: The biting or cutting edge on anterior teeth 44. Facial: The labial and buccal surfaces may also be known as 45. Apex: At or near the end of the root 46. Groove: A small linear depression on the surface of a tooth 47. Lobe: A developmental segment of the tooth 48. Amalgam: is an alloy powder mix with liquid mercury 49. Silver: Strength 50. Tin: Workability 51. Copper: Corrosion resistance 52. Zinc: Suppresses oxygen 53. Zinc: 0-2% 54. Copper: 13-27% 55. Tin: 22-30% 56. Silver: 40-70% 57. Zinc: Prevent oxidation during manufacturing process reduces brittleness 58. Tin: Aids in combining the mercury with alloy 59. Copper: Add strength and decreases expansion of amalgam 60. Silver: Combined easily with mercury 61. Amalgam scrap: Hazardous waste 62. Amalgam scrap: Designate a dry air tight and labeled container for unused leftovers of this material to be stored for recycle 63. Trituration: The process by which mercury and the alloy powder are mixed