Plus March & September 2014 MCQs in Prosthodontics
What is the purpose of making a record of protrusive relation and what
function does it serve after it is made
A. To register the condylar path and to adjust the inclination of the incisal guidance.
B. To aid in determining the freeway space and to adjust the inclination of the incisal
guidance.
C. To register the condylar path and to adjust the condylar guides of the articulator
so that they are equivalent to the condylar paths of the patient.
D. To aid in establishing the occlusal vertical dimension and to adjust the condylar
guides of the articulator so that they are equivalent to the condylar paths of the
patient.
86. The main factor controlling a decision to increase the occlusal height of
teeth for extensive oral reconstruction is whether
A. The inter occlusal distance will be physiologically acceptable after treatment
B. There will be sufficient tooth bulk in the abutment teeth for proper retention of the
crowns
,C. At least two third of the original alveolar process will remain for adequate
periodontal support
D. The aesthetic appearance of the patient will improve sufficiently to warrant the
planned reconstruction
. In planning and construction of a cast metal partial denture the study cast
A. facilitate the construction of custom/special trays
B. minimize the need for articulating
C. provide only limited information about inter ridge distance, which is
best assessed clinically
D. can be used as a working cast when duplicating facilities are not available
88. Periodontal damage to abutment teeth of partial denture with distal
extension can best be avoided by
A. Applying Stressbreakers
B. Employing bar clasps on all abutment teeth
C. Maintaining tissue support of the distal extension
D. Clasping at least two teeth for each edentulous area
E. Maintaining the clasp arms on all abutment teeth at the ideal degree of tension
,89. Which of these muscles may affect the borders of mandibular complete
denture
A. Mentalis
B. Lateral pterygoid
C. Orbicularis oris
D. Levator angulioris
E. Temporal
Jaw relation of an edentulous patient has been established. The maxillary cast
has been mounted on an articulator without a face bow. You decide to
increase the occlusal vertical dimension by 4mm this will necessitate
A. Opening the articulator 4mm
B. A new centric relation to be recorded
C. A change in the condylar guide settings
D. An increase in the rest vertical dimension
91. Following extraction of the molar teeth**
A. The ridge height is lost more from the maxilla than from the mandible
B. The maxillary ridge will get more bone lost from the palatal aspect than the buccal
C. The mandibular arch is relatively narrower than the maxillary arch
, D. Compared with the pre-resorption state, the mandibular ridge will lose more bone
from the lingual aspect than the buccal one.
92. Which of the following is a major disadvantage to immediate complete
denture therapy
A. Trauma to extraction site
B. Increased the potential of infection
C. Impossibility for anterior try in
D. Excessive resorption of residual ridge
100. What is the main purpose of using Stress breakers
A. To distribute the load between teeth and ridges
B. To distribute the load between the clasps and the face end of the saddle
C. It relieves the abutment tooth of occlusal loads that may exceed their physiologic
strength
103. Which is more retentive form for anterior bridge
A. ¾ partial veneer crown
B. Class V inlay
C. Pinlay Veneer
D. Class III inlay with pins