Partial Denture ( Dr. Sokly) I
.
- 1.1. A clasp most common use is?:
- A.
Ring clasp
- B.
Back action clasp
- C.
Aker clasp
- D.
Embrasure
- 2.2. Infrabulge clasps originate:
- A.
Above the 12mm undercut areas
- B.
Above the occlusal surface of most premolars
- C.
Above the height of contour
- D.
Below the height of contour
- 3.3. Reciprocation between bracing and retentive components requires:
- A.
I bars be used
- B.
Aker clasp be used
- C.
Bracing components contacts after retentive components
- D.
Correct timing of contact during seating and removed of RPD
- 4.4. The basic movement of mandible:
- A.
Hinge movement
- B.
Translatory movement
- C.
Lateral movement
- D.
Hinge ,lateral and translatory movement
- 5.5. Maxillary major connectors most common use is:
- A.
Full palatal strap
- B.
Palatal strap
- C.
Anterior posterior palatal strap
- D.
Anterior palatal strap
- 6.6. Anterior posterior palatal strap especially use is:
- A.
Maximum rigidity
- B.
Minimum bulk
- C.
Use in most cases
- D.
Torus palatal
- 7.7. Which of the following maxillary major connectors possesses the least strength and rigidity?:
- A.
Anterior posterior palatal strap
- B.
Palatal plate
- C.
Horse –shoe
- D.
Modified palatal strap
- 8.8. Which of the following clasps commonly utilize lingual undercut?:
- A.
Extended arm clasp
- B.
Back action clasp
- C.
Embrasure clasp
- D.
Ring clasp
- 9.9. The external finish line is:
- A.
The external of framework metal and denture base plastic
- B.
The external of framework metal and supporting tissues
- C.
The external of framework metal and the natural teeth
- D.
The external of the natural teeth and the denture base plastic
- 10.10. Functions of a Major connector:
- A.
Component of RPD connect to acrylic resin
- B.
Kind of metal chrome cobalt
- C.
Functions as one unit
- D.
Unification, stress distribution, cross arch stabilization
- 11.11. Requirements of a Major connector:
- A.
Connects various parts
- B.
Distributes functional loads to both teeth and mucosa
- C.
Partial denture acts as one unit
- D.
Rigidity, non interference with tissues, minimize food impaction and unobtrusive
- 12.12. The superior border of mandibular lingual bar major connector should be:
- A.
At least 3mm from the tooth/ tissue junction
- B.
At least 3mm from the tooth/ junction
- C.
As far from gingival margin as possible
- D.
At least 3mm above the tooth/ junction
- 13.13. The internal finish line is:
- A.
The butt joint between the metal and resin acrylic on the tissue side of the edentulous area
- B.
The butt joint between the metal and resin acrylic on the outer surface of the RPD
- C.
A type of posterior palatal seal
- D.
A special type of above
- 14.14. A combination clasp assembly generally has:
- A.
A bracing arm , a retentive arm and rests
- B.
A retentive arm ,rests and indirect retainer
- C.
Rests, a retentive arm and proximal plate
- D.
Rests , a bracing arm and proximal plate
- 15.15. The external finish line on a maxillary class 1 RPD originates from the lingual of the guide plane of the terminal abutment and ends:
- A.
At the hamular notch
- B.
In the glenoid fossa
- C.
Opposite the buccal pouch
- D.
Opposite stenon’s duct
- 16.16. The Gridwork of Minor Connector on a maxillary class 1 RPD:
- A.
Covers the hamular notch
- B.
Covers the tuberosity
- C.
Does not cover the tuberosity
- D.
Covers the crest and tuberosity
- 17.17. Occlusal rest preparation should be:
- A.
Spoon shaped, at least1/3 the bucco lingual width of the occlusal surface, at least 1m deep
- B.
Flat shaped, at least1/3 the bucco lingual width of the occlusal surface, at least 1mm deep
- C.
Pear shaped, at least 1/2 the bucco lingual width of the occlusal surface, at least 15mm deep
- D.
Teardrop shaped, at least 1/2 the bucco lingual width of the occlusal surface, at least 15mm deep
- 18.18. A lingual plate major connector may be selected be cause
- A.
The mandibular incisors are tilted lingually, mandibular tori present, high lingual frenum
- B.
The mandibular incisors are tilted facially, high floor of the mouth
- C.
The mandibular incisors are tilted facially, mandibular tori present ,high lingual fremum
- D.
The mandibular incisors are tilted lingually ,high floor of the mouth, high lingual frenum
- 19.19. An anterior posterior palatal strap major connector is less rigid than a horseshoe major connector because it (the AP strap) has less width:
- A.
The first statement is true but the reason is false
- B.
The first statement is false and the reason is also false
- C.
The first statement is true and the reason is true
- D.
The first statement is false but the reason is true
- 20.20. In a circumferential clasp assembly, the arms may extend into an undercut:
- A.
The bracing arm
- B.
The reciprocating arm and retentive arm
- C.
The bracing arm and retentive arm
- D.
The retentive arm
- 21.21. Which of the following steps is done LAST ?:
- A.
Rest preparatio
- B.
Framework try in
- C.
Centric relation records
- D.
Altered cast impression
- 22.22. Direct retainer (clasps):
- A.
Help stabilize the RPD by controlling occlusal movement
- B.
Help stabilize the RPD by controlling gingival movement
- C.
May also function as indirect retainers
- D.
Prevent excessive biting forces on the abutment
- 23.23. What are the indications for a linguo plate as a major connector for a mandibular RPD?:
- A.
Present high floor of the mouth and facially anterior teeth
- B.
Present high lingual frenum and buccally anterior teeth
- C.
Present lingual tori and big tongue
- D.
High floor of the mouth, high lingual frenum, lingual tori
- 24.24. Incisal rests should generally not used on maxillary incisors Why?:
- A.
For mandibular class 4 kennedy only
- B.
For maxillary class 4 kennedy only
- C.
For maxillary and mandibular class 1 and 2 kennedy
- D.
Poor esthetics and interferences with opposing occlusion
- 25.25. Component of a clasp assembly are:
- A.
One rest, a retentive arm , a bracing or reciprocating element, one minor connector
- B.
One or two rests, a retentive arm, a bracing or reciprocating element, one minor connectors, one major connector
- C.
One minor connector, one major connector, one rest, two rests, one retentive arm, one bracing arm
- D.
Two minor connectors, one major connector , one rest, one retentive arm, one bracing or reciprocating element
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