Hottel Efda Final Exam Study Guide 2025/2026 Accurate Questions And Correct Detailed Answers With Rationales || 100% Guaranteed Pass Brand New Version

Hottel EFDA FINAL EXAM STUDY GUIDE 2025/2026 ACCURATE QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES || 100% GUARANTEED PASS BRAND NEW VERSION 1. In the federation dentaire international system for numbering, a permanent maxillary right first molar is: - ANSWER 16 2. Which tooth numbering system does not use letters when describing primary dentition? - ANSWER FDI Numbering System 3. On a tooth with extensive gingival recession below the Cementoenamel junction, what would be visible? - ANSWER anatomical and clinical crown 4. What is the periodontium? - ANSWER The oral hard and soft tissue that supports the teeth 5. When looking into a healthy oral cavity when will most likely see - ANSWER The clinical crown 6. The term that describes a space continuous with an inter-proximal space, produced curvature's of teeth in contact in the same arch, that provides a channel or a passage through which food escapes from the occlusal surfaces of the teeth during mastication - ANSWER Embrasures 7. Which embrasure is located below the contact area - ANSWER Gingival 8. When posterior teeth are viewed from the occlusal, The proximal contacts are usually located - ANSWER more buccal in a buccal to lingual direction 9. When anterior teeth are viewed from the incisal , the contact area is located - ANSWER more center in a buccal to lingual direction 10. What must you avoid when finishing proximal areas of the amalgam restoration - ANSWER Damaging the contact area 11. Damage to the soft tissue during placement of restorative material may cause bleeding that can interfere with material causing - ANSWER Improper bonding improper curing Lead to open margins 12. And EFDA may need to place retraction cord so that the resultant restorative material can be placed without contamination from the - ANSWER Sulcular fluid Blood 13. When taking a final crown impression you must have your cord placed so that you can view the entire finish line, as well as _______ mm of unexposed axial wall apical to the finish line - ANSWER 0.5-1.0mm 14. There are many techniques that can achieve retraction. these include - ANSWER Retraction cord Electrosurgery Chemical Reagant 15. True or false. Gingival retraction cord is not the most effective, What is the most commonly used method of attraction for most clinicians - ANSWER False 16. A precaution to consider when placing retraction cord with racemic epinephrine is that it may cause - ANSWER Elevation in blood pressure and tachycardia 17. Retraction cord can expand when wet therefore - ANSWER Opens the sulcus to a greater size than the original cord size 18. Common astringent hemostatic agents used with retraction cord include - ANSWER Ferric sulfate Aluminum sulfate 19. Studies have shown that hemostatic agent effects can last up to_______ after cord has been removed - ANSWER 20 mins 20. Generally speaking what is the first step in cord placement - ANSWER Evaluate the area where the prep is located and gingival tissue 21. In the early_______, New conservative preparation's were developed that include what became known as tunnel and slot cavity designs - ANSWER 1990s 22. The ________ preparation was designed to avoid the removal of the marginal ridge and the issues surrounding the proper replacement of the marginal ridge - ANSWER Tunnel 23. The _______ preparation when restored frequently result in fracture of the unsupported _________ - ANSWER Tunnel, marginal ridge 24. The ________ preparation was developed to minimize the amount of natural tooth reduction needed to restore a carious lesion - ANSWER Slot 25. If composite material is chosen for a slot preparation there is little need for retentive areas or undercuts, which conserves ______ - ANSWER Natural tooth structure 26. the ________ preparation is not usually taught in academic settings in a seldom used in private practice today - ANSWER Tunnel 27. Always make sure to _________ each layer to assure no voids are present - ANSWER Condense 28. True or false. It is usually difficult to finish the proximal extent of tunnel and slot restorations. This is why proper adaptation of the matrix band and wedging are a critical step - ANSWER True 29. It is important to place the restorative material in __________ increments, Making sure to condense each layer to ensure that no voids are present - ANSWER Very small 30. actavation - ANSWER Movement of instrument 31. Adaption - ANSWER Relationship between working end of instrument and tooth 32. Finger used for finger rest - ANSWER Third finger 33. What is key to rubber dam stabilization - ANSWER Rubber dam clamp 34. The winged clamp allows? - ANSWER Rubber dam to be attached to the clamp prior to placing 35. The jaw of the rubber dam clamp does what? - ANSWER Extends to fit over tooth 36. The bow of the dental dam clamp should be placed - ANSWER Distal and occlusal to the clamped tooth 37. Size of rubber dam hole for mandibular and Max. Laterals - ANSWER Size small 2 38. Size of rubber dam hole for molars - ANSWER Size Large 5 39. For class V restorations, displace rubber dam hole facially/lingually how many mm? - ANSWER 3-6 40. Size of rubber dam hole for premolars, canines, and max. Central incisors - ANSWER Size med 3 41. Be sure the gingiva is retracted ? mm below the proposed gingival margin of the prep - ANSWER 0.5-1mm 42. Does Varnish or calcium hydroxide come first - ANSWER CH 43. Cavity varnishes are? - ANSWER Sealers 44. Minimal depth restoration extends - ANSWER 0.5-1.5mm 45. Second type cavity prep depth - ANSWER 1mm into dentil but more than 0.5mm from pulp 46. Thickness of calcium hydroxide when placed - ANSWER About 0.25 to 0.5mm 47. CH can be placed on enamel. T or F - ANSWER False, it cannot be placed on enamel 48. Break down of amalgam, in order - ANSWER Silver, copper, tin and zinc 49. Percentage of silver - ANSWER 41-71 50. Percentage of copper - ANSWER Low less than 9 High is 12-30 51. Percentage of tin - ANSWER 15-30 52. Percentage of zinc - ANSWER 0-1% 53. The combination of what results in Gamma II - ANSWER Mercury and Tin 54. Amalgam that contains more than __% mercury is mercury rich amalgam - ANSWER 54 55. Matrix band is extended __mm to __mm Ging/occlusal - ANSWER 0.5 1.5 56. A secondary matrix band should only extend ? Beyond the medial and distal margins - ANSWER 1-2mm 57. Remove occlusal excess use a - ANSWER Tapered green stone 58. To remove sub marginal areas of less than 0.2mm with a - ANSWER Tapered white stone 59. Conventional large particularly composite contains #%_#% inorganic filler by weight - ANSWER 75%_80% 60. Micro filled resins contain #%-#% - ANSWER 40%-60% 61. Teeth are identified by - ANSWER Arch, quad and lastly name 62. Enamel is composed of _% inorganic or organic matter? - ANSWER 95% and inorganic 63. Denton is composed of _% inorganic or organic matter - ANSWER 70% inorganic 64. Cavosurface is what - ANSWER Uncut tooth structure adjacent to cavity prep 65. How many sealents must your dr see you place - ANSWER 6 66. Remedial - ANSWER Fix something done wrong 67. Delegates task - ANSWER You are aloud to do 68. you got this girl - ANSWER I KNOW, tell me something I don't know 69. How should the occlusal surface of tunnel or slot preparation to be finished - ANSWER Finish the occlusal surface similar to any occlusal restoration 70. Why is it important to learn the different techniques necessary to produce a successful restoration for the patient - ANSWER In case the EFDA is required to fill it someday 71. Where is enamel the thickest? - ANSWER incisal/occlusal surface 72. True or false: pulp increases in size with age - ANSWER False 73. What dental tissue is comprised of tubules that contain protoplasmic extensions of the cells that line the pulp chamber - ANSWER dentin 74. Enamel covers the anatomical crown of the tooth. The composition of an enamel is approximately - ANSWER 95.5% inorganic, 0.5% organic, 4% water 75. Dentin is normally yellowish white and darker than an enamel. The composition of dentin is approximately - ANSWER 70% inorganic, 20% organic, 10% water 76. What tooth tissue most resembles bone - ANSWER cementum 77. Pulp can be harmed by the Carie's process and by - ANSWER Sterilizing, cleaning, drying, desensitizing agent 78. Where is the oblique ridge located on a maxillary molar? - ANSWER DB and ML cusps 79. Which incisor has the most acute mesioincisal angle (sharp) - ANSWER Maxillary central 80. A basic difference between canines and incisors is the ________ that is unique to canines - ANSWER Cusp tip 81. What term is used to describe any linear elevation of the surface of a tooth - ANSWER Ridge 82. A union of two triangular ridges produces a single ridge which is called - ANSWER transverse ridge 83. What is a marginal ridge - ANSWER Rounded border of enamel which forms the mesial and distal margins of anterior and posterior teeth 84. What is the term used to describe broad irregular depressions or concavities on the occlusal and lingual surfaces of anterior and posterior teeth - ANSWER Fossae 85. Which term describes the junction of walls of a cavity preparation with the external surface of the tooth - ANSWER Cavosurface margin 86. what is an anatomical crown - ANSWER portion that extends from the incisal or occl surface to the CEJ 87. Clinical crown - ANSWER Visible portion of tooth from gums to incisal or occl surface 88. furrow - ANSWER concavity from CEJ to furcation 89. contact area - ANSWER Area of the mesial or distal surface of a tooth that touches the adjacent tooth in the same arch 90. purpose of a contact area - ANSWER 1. keep food from packing between teeth 2. stabilize the arch 91. what happens when there is no proximal contact - ANSWER 1. Food can become impacted and result in build up 2. teeth may shift 92. what is an embrasure - ANSWER Triangular space between teeth insical/occl facial/buccal lingual gingival