Prothesis fixed


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Prothesis fixed

  1. 1. FDP, Removable, Implants Jomana Badran Pages 54-80
  2. 2. Page 59 4. Occlusal (night) guards are used to A. B. C. D. treat bruxism. reduce pocket formation. prevent pulpitis. permit eruption or elongation of teeth. The occlusal splint has some possible advantages for severe bruxers. Coverage of all teeth in one arch has the effect of diminishing the mechanoreceptive response in the individual teeth that are covered by the splint. The splint coverage may also prevent the minute rebound effect from occurring in teeth that have been intruded. This improvement in stability may better preserve the perfected relationship that is accomplished at equilibration. Page 337 Functional Occlusion
  3. 3. Page 64 6. A patient with bruxism is likely to demonstrate A. radiographic evidence of the widening of the periodontal ligament. B. increased mobility of teeth. C. premature wear of occlusal surfaces. D. TMJ discomfort. E. All of the above. Fig. 7-1 When the masticatory system is overloaded, a variety of structures can reveal breakdown leading to symptoms. Some of the more common symptoms are (a) tooth wear, (b) pulpitis, (c) tooth mobility, (d) masticatory muscle pain, (e) temporomandibular joint pain, (f) ear pain, and (g) headache pain. Page 139 Management of TMJ disorder
  4. 4. Page 64 10. A clenching habit may be a factor in A. B. C. D. suprabony periodontal pocket formation. marginal gingivitis. increased tooth mobility. generalized recession. Page 139 Management of TMJ disorder
  5. 5. Page 69 3. While the teeth are set in wax, dentures are tried in to A. B. C. D.All of verify the maxillomandibular records. verify the vertical dimension of occlusion. evaluate esthetics. the above. The Try-in Appointment SECTION I: PERFECTION AND VERIFICATION OF JAW RELATION RECORDS which include VERIFYING THE VERTICAL DIMENSION and VERIFYING CENTRIC RELATION SECTION II: ECCENTRIC JAW RELATION RECORDS, ARTICULATOR AND CAST ADJUSTMENT, ESTABLISHMENT OF THE POSTERIOR PALATAL SEAL SECTION III: CREATING FACIAL AND FUNCTIONAL HARMONY WITH Page 329 ANTERIOR TEETH Prosthodontics treatment of edentulous patient
  6. 6. Page 70 1. After cementation of a fixed bridge, the patient should be advised to 1. avoid hot liquids. 2. stimulate the gingival tissue with massage. 3. use dental floss under the pontic. 4. return for periodic examination. 5. avoid sticky foods. A.(1) (2) (3) B.(1) (3) (5) C.(1) (4) (5) D.(2) (3) (4) E.(2) (4) (5) Postinsertion Hygiene After the fixed partial denture is cemented, teach the patient appropriate technique(s) that can be mastered. Motivate the individual to practice good hygiene around and under the pontic with dental floss (Fig 26-8), interproximal brushes (Fig 26-9), or pipe cleaners. Page 478 Fundamental of fixed prosthodontics
  7. 7. 4.A fixed bridge pontic should 1. restore tooth function. 2. reduce thermal conductivity. 3. be biologically acceptable. 4. reduce galvanic reactions between abutments and other restorations. 5. restore aesthetics. A. (1) (2) (3) B. (1) (3) (5) C. (1) (3) (4) D. (2) (3) (4) Pontics designed for placement in the appearance zone must produce the illusion of being teeth, esthetically, without compromising clean ability. Those pontics placed in the nonappearance zone (usually mandibular posterior replacements) are there to restore function and prevent the drifting of teeth. Since esthetics is usually a minor consideration in this area of the mouth, it may not be necessary to utilize materials or contours that suggest the presence of a tooth. Page 479 and 485 Fundamental of fixed prosthodontics
  8. 8. Page 71 2. In treatment planning for a fixed bridge, the necessary clinical data should include 1. 2. 3. 4. an assessment of any discrepancy between centric occlusion and centric relation. the type of impression materials to be used. an evaluation of the forces of mastication. the aesthetic considerations. A. (1) (2) (3) B. (1) (3) (4) C. (2) and (4) E. (4) only (1) and (4) D.
  9. 9. 3. In the design of a removable partial denture, guiding planes are made A. parallel to the long axis of the tooth. B. parallel to the path of insertion. C. at a right angle to the occlusal plane. a right angle to the major connector. All proximal abutment surfaces that are to serve as guiding planes for the removable partial denture should be prepared so that they will be made as nearly parallel as possible to the path of placement Page 245 McCracken
  10. 10. 4. Rests on terminal abutment teeth for a cast metal removable partial denture provide A. B. C. D. primary retention. indirect retention. occlusal force transmission. lateral force transmission
  11. 11. 5. For a removable partial denture, a metal base is preferred to an acrylic base because metal is A. more hygienic. B. stronger. C. less irritating. D. a better thermal conductor. E. All of the above.
  12. 12. 7. Which of the following should be checked first when a cast gold crown that fits on its die cannot be seated on its abutment? A. The occlusal contacts. B. The taper of the preparation. C. The proximal contacts. D. The impression used to pour the cast.
  13. 13. Page 74 6. The crownçroot ratio is 1. the comparison of the length of root retained in bone to the amount of tooth external to it. 2. an important factor in abutment tooth selection. 3. determined from radiographs. 4. determined during surveying of the diagnostic cast. A. D. E. (1) (2) (4) B. (1) (2) (3) C. All of the above. None of the above. (1) (3) (4) This ratio is a measure of the length of tooth occlusal to the alveolar crest of bone compared with the length of root embedded in the bone. As the level of the alveolar bone moves apically, the lever arm of that portion out of bone increases, and the chance for harmful lateral forces is increased. The optimum crown-root ratio for a tooth to be utilized as a fixed partial denture abutment is 2:3. A ratio of 1 • 1 is the minimum ratio that is acceptable for a prospective abutment under normal circumstances Page 91 Fundamental of fixed prosthodontics
  14. 14. 3. A removable partial denture rest should be placed on the lingual surface of a canine rather than on the incisal surface because A. less leverage is exerted against the tooth by the rest. B. the enamel is thicker on the lingual surface. visibility and access are better. C. the cingulum of the canine provides a D.natural recess. A lingual rest is preferable to an incisal rest, because it is placed nearer the horizontal axis of rotation (tipping axis) of the abutment and therefore will have less tendency to tip the tooth. In addition, lingual rests are more esthetically acceptable than are incisal rests. Page 77 McCrccen
  15. 15. 7. In an edentulous maxilla, the direction of resorption of the alveolar ridge is A. B. C. D. upward and palatally. upward and facially. uniform in all directions. upward only.
  16. 16. Page 75 1.A metal in the wrought condition differs from the same metal in the cast condition in that A. B. C. D. the grains are deformed and elongated. the yield strength and hardness are increased. if heated sufficiently, recrystallization can occur. All of the above. Having been formed by being drawn into a wire, the wrought-wire clasp arm has toughness exceeding that of a cast clasp arm. The tensile strength of a wrought structure is at least 25% greater than that of the cast alloy from which it was made. It may therefore be used in smaller diameters to provide greater flexibility without fatigue and ultimate fracture. Page 91 Mccracken
  17. 17. 2. Dental porcelain has 1. 2. 3. 4. low compressive strength. high hardness. high tensile strength. low impact strength. A.(1) (2) (3) B.(1) and (3) C.(2) and (4) D.(4) only E. All of the above.
  18. 18. 3. After processing, complete dentures on the original stone casts are rearticulated in order to correct occlusal disharmony produced by 1. flasking and processing procedures. 2. strained jaw relation records. 3. errors in registering of centric jaw relation. A. B. C. D. (1) only (1) (2) (3) (2) and (3) (1) and (3)
  19. 19. 7. Which of the following structures affects the thickness of the flange of a maxillary complete denture? A. Malar process. B. Coronoid process. C. Mylohyoid ridge. D. Zygomatic process. E. Genial tubercle. maxillary buccal flanges should properly fill the buccal vestibule. However, the distal corners of the denture base below the borders must be thin to allow the freedom necessary for movement of the coronoid process. Page 424 prosthodontics treatment of edentules patient
  20. 20. . 8 The form of the distobuccal border of a mandibular denture is modified by 1.buccinator muscle. 2.masseter. 3.temporal tendon. 4. pterygomandibular raphe. 5. external oblique ridge. •(1) and (2) •(2) and (3) •(3) and (4) •(1) and (5) •(4) and (5) The masseter muscle, when contracting, can act through the buccinator muscle and impinge on the buccal sulcus. This effect usually is much more pronounced in the mandibular buccal sulcus. The external oblique line of the mandible defines the lateral boundary of the buccal shelf and frequently defines the buccal boundary of the mandibular buccal sulcus Page 91 prosthodontics treatment of edentulous patient
  21. 21. Page 76 1. Which of the following should be evaluated for surgical removal before new complete dentures are constructed? A.Mandibular tori. B.Epulis fissuratum. C. Papillary hyperplasia. D. Sharp, prominent mylohyoid ridges. E. All of the above. the torus may be considered for surgical remova page 109 prosthodontics treatment of edentulous patient