MOSBY Flashcards
The impression material that is mainly composed of sodium or potassium salts of alginic acid is _____.
A. Polyether
B. Irreversible hydrocolloid
C. Polyvinyl siloxane
D. Polysulfide
B. Irreversible hydrocolloid
A complete denture patient presents with angular cheilitis. A review of recent medical examination revealed that vitamin deficiency is not a factor. A possible predisposing factor is
A. Excessive vertical dimension of occlusion
B. A closed or insufficient vertical dimension of occlusion
C. Improper balance of the occlusion
D. Poor contour of the denture base
B. A closed or insufficient vertical dimension of occlusion
Each of the following is a feature of papillary hyperplasia except one. Which one is not true?
A. It is a proliferative bone disease
B. It can be caused by wearing the dentures at night
C. It can be caused by poor oral hygiene
D. It can be caused by an ill-fitting denture
A. It is a proliferative bone disease (Paget’s disease)
NOTES:
PAPILLARY HYPERPLASIA
- It can be caused by wearing the dentures at night
- It can be caused by poor oral hygiene
- It can be caused by an ill-fitting denture
For optimum esthetics when setting maxillary denture teeth, the incisal edges of the maxillary incisors should follow the _____.
A. Lower lips during smiling
B. Upper lips during smiling
C. Lower lips when relaxed
D. Upper lips when relaxed
A. Lower lips during smiling
Excessive monomer added to acrylic resin will result in _____.
A. Increased expansion
B. Increased heat generation
C. Increased shrinkage
D. Increased strength
C. Increased shrinkage
Which is the purpose of adjusting the occlusion in dentures?
A. To obtain balanced occlusion.
B. To stabilize dentures.
C. To obtain even occlusal contacts.
D. All of the above.
D. All of the above.
Which may be a consequence of occlusal trauma on implants?
A. Widening of the periodontal ligament.
B. Soft-tissue sore area around the tooth.
C. Bone loss.
D. All of the above.
C. Bone loss (seen on the most coronal aspect on the implant)
Which of the following is true of an occlusal rest for a removable partial denture?
- One-third facial lingual width of the tooth
- 1.5 mm deep for base metal
- 2.0 mm labiolingual width of the tooth
- Floor inclines apically toward the center of the tooth
A. All of the above
B. 1, 3, and 4
C. 1, 2, and 4
D. 3 and 4
C. 1, 2, and 4
A patient is unhappy with the esthetics of an anterior metal-ceramic crown, complaining that it looks too opaque in the incisal third. The reason for this is most likely _____.
A. Using the incorrect opaque porcelain shade.
B. Inadequate vacuum during porcelain firing.
C. Not masking the metal well enough with the opaque.
D. The tooth was prepared in a single facial plane.
D. The tooth was prepared in a single facial plane.
An endodontically treated tooth was restored with a cast post-and-core and a metal-ceramic crown. Three months later, the patient complains of pain, especially on biting. Radiographic findings and tooth mobility tests are normal. The most probable cause of pain is _____.
A. A loose crown
B. Psychosomatic
C. A vertical root fracture
D. A premature eccentric contact
C. A vertical root fracture
For an occlusal appliance used for muscle relaxation to be effective, the condyles must be located in their most stable position from a musculoskeletal perspective. This is _____.
A. Centric occlusion
B. At the vertical dimension of rest
C. Centric relation
D. Maximum intercuspal position
C. Centric relation
A diagnostic wax-up is indicated when _____.
A. Re-establishing anterior guidance
B. A provisional fixed prosthesis is to be fabricated
C. Uncertainty exists regarding esthetics
D. All of the above
D. All of the above
Which of the following is the single most important predictor of clinical success of a cast post and core?
A. Amount of remaining coronal tooth structure.
B. Post length.
C. Post diameter.
D. Positive horizontal stop.
A. Amount of remaining coronal tooth structure.
Which of the following are factors associated with bone loss?
A. Initial implant instability.
B. Excessive occlusal force.
C. Inadequate hygiene.
D. Inadequate prosthesis fit.
E. All of the above.
E. All of the above.
Which of the following statements is(are) true concerning the evaluation of the occlusion on a cast restoration?
A. The restoration is in proper occlusion if it holds shim stock.
B. The restoration is in proper occlusion if the adjacent teeth hold shim stock.
C. The restoration is in proper occlusion when articulating paper marks multiple points of contact on the restoration.
D. A, B, and C.
E. None of the above.
D. A, B, and C.
In a Kennedy Class I arch in which all molars and the first premolar are missing and the rest of the teeth have good periodontal support, the preferred choice of treatment is _____.
A. A removable partial denture replacing all missing teeth
B. A fixed dental prosthesis replacing the missing premolar and a removable partial denture replacing the molars
C. Implant supported crowns replacing the first premolars and a removable partial denture replacing the molars
D. A and B are preferred choice of treatment over C.
E. B and C are preferred choice of treatment over A
E. B and C are preferred choice of treatment over A
Which of the following is(are) uses for the surveyor?
A. To aid in the placement of an intracoronal retainer.
B. To block out a master cast.
C. To measure a specific depth of an undercut.
D. All of the above.
E. Only A and B are correct.
D. All of the above.
A dentist is preparing all maxillary anterior teeth for metal-ceramic crowns. Which of the following procedures is necessary in order to preserve and restore anterior guidance?
A. Protrusive record.
B. Template for provisional restorations.
C. Custom incisal guide table.
D. Interocclusal record in centric relation.
C. Custom incisal guide table.
A radiolucency near the apex of tooth #28 is seen radiographically. The tooth is asymptomatic and does not have caries or periodontal problems. Which is most likely the cause of the radiolucency?
A. Submandibular fossa.
B. Periapical granuloma.
C. Complex compound odontoma.
D. Mental foramen.
D. Mental foramen.
The minor connector for a mandibular distal extension base should extend posteriorly about
A. Two-thirds the length of the edentulous ridge
B. Half the length of the edentulous ridge
C. One-third the length of the edentulous ridge
D. As long as possible
A. Two-thirds the length of the edentulous ridge
Which are characteristics of a major connector that contribute to health and well-being?
A. It is rigid and provides unification of the arch stability.
B. It does not substantially alter the natural contour of the lingual surface of the mandibular alveolar ridge or the palatal vault.
C. It contributes to the support of the prosthesis.
D. All of the above.
E. Only A and B.
D. All of the above.
When does a fixed dental prosthesis (FDP), which was cast in one piece, need to be sectioned?
A. When a cantilever pontic is used.
B. When the fit cannot be achieved or verified with a one-piece cast.
C. When single crowns are adjacent to the FDP.
D. Always, in order to achieve a good fit.
B. When the fit cannot be achieved or verified with a one-piece cast.
When soldering a fixed partial denture, what is the effect of flux when heated on the area to be soldered?
A. To remove oxides from the metal surface.
B. To displace metal ions from the area.
C. To change the composition of the alloy.
D. To reduce the surface tension of the metal
A. To remove oxides from the metal surface.
The component of an RDP that is spoon-shaped and slightly inclined apically from the marginal ridge of a tooth is the _____.
A. Indirect retainer
B. Minor connector
C. Rest
D. Lingual bar
C. Rest