Dentosphere : World of Dentistry

Filtration of X ray Beam

# What is the function of the filtration process while taking radiographs?
A. Remove the short wavelength photons
B. Remove the portion of long wavelength photons
C. To increase the radiation dose to the patient
D. To increase the scatter of secondary radiation

The correct answer is: B.

X-ray photons with short-wavelength have high penetration energy and are useful for diagnostic radiology X-ray photons of long-wavelength have low penetration energy and contribute to patient exposure only. These photons are removed by keeping aluminum filters in their path. The half-value layer is about 1.5 mm for an X-ray tube of 70 kVp and is about 2.5 mm for higher voltages.

Paired and Unpaired Sinuses

# Which one of the following is an unpaired sinus?
A. Cavernous sinus
B. Sigmoid sinus
C. Straight sinus
D. Superior petrosal sinus

The correct answer is C. Straight Sinus.

Venous sinuses of dura mater are:

Paired - 1. Cavernous sinus, 2. Superior petrosal sinus, 3. Inferior petrosal sinus, 4. Transverse sinus, 5. Sigmoid sinus, 6. Sphenoparietal sinus, 7. Petrosquamous sinus, 8. Middle meningeal sinus

Unpaired:

1. Superior sagittal sinus, 2. Inferior sagittal sinus, 3. Straight sinus, 4. Occipital sinus, 5. Anterior intercavernous sinus, 6. Posterior intercavernous sinus, 7. Basilar plexus of veins, 8. Sphenoid air sinus

Mixed tumors of the salivary glands

# Mixed tumors of the salivary glands are:

A. Most Common in Submandibular gland

B. Usually malignant

C.Most Common In parotid gland

D. Associated with calculi

The correct answer is C. Most Common in parotid gland.

PROSTHODONTICS PAST QUESTIONS- AUGUST 2013 FOURTH YEAR B.D.S. DEGREE EXAM

[LD 675] AUGUST 2013 Sub. Code:
4183 FOURTH YEAR B.D.S. DEGREE EXAM
PAPER – V PROSTHODONTICS AND CROWN AND BRIDGE
Q .P .Code: 544183
Time: 180 Minutes Maximum: 70 Marks

I. Elaborate on: (2x10=20)

1. Define centric relation. Discuss the different types of centric relation procedure.
2. Discuss the method of preparation to receive a jacket crown in central incisor (PORCELAIN).

II. Write Notes on: (10x5=50)
1. survey line and its uses
2. Zirconia porcelain
3. Anatomic teeth
4. Kennedy class two design-Maxillary
5. Gingival Fluid control
6. Impression Techniques in removable partial dentures
7. Root form implants
8. Immediate dentures
9. Selective pressure impression technique
10. Arcon articulators
*****

PROSTHODONTICS PAST QUESTIONS FEBRUARY 2013 FOURTH YEAR B.D.S. DEGREE EXAM

[LC 675] FEBRUARY 2013 Sub. Code: 4183
FOURTH YEAR B.D.S. DEGREE EXAM PAPER – V PROSTHODONTICS AND CROWN AND BRIDGE
Q .P .Code: 544183
Time: 180 Minutes Maximum: 70 Marks

I. Elaborate on: (2x10=20)
1. What are jaw relation? Discuss the biological significance of following during complete denture
preparation:
2. Discuss in detail the fixed partial denture failures.

II. Write Notes on: (10x5=50)
1. Neutral zone.
2. Hanau’s quint.
3. Tissue conditioners.
4. Retromolar pad.
5. Lingulaized occlusion.
6. Bar clasp.
7. Osseo integration.
8. Selective pressure impression technique.
9. Combination syndrome.
10. Arcon articulators.
*******

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PROSTHODONTICS PAST QUESTIONS - AUGUST 2012 FOURTH YEAR B.D.S. DEGREE EXAM

[LB 675] AUGUST 2012 Sub. Code:
4183 FOURTH YEAR B.D.S. DEGREE EXAM
PAPER – V PROSTHODONTICS AND CROWN AND BRIDGE
Q .P .Code: 544183
Time : 180 Minutes Maximum : 100
marks Answer ALL questions in the same order.
I. Elaborate on: (2*20=40)

1. Name the various types of bridges Diagramatically name the parts of a bridge classify the
retainers. Discuss in detail about Radicular retainers.
2. Define “PATH OF INSERTION” and “PATH OF REMOVAL” in a Removable cast partial denture. Discuss the factors affecting the same and the role Played by the surveyor.

II. Write Notes on: (12*5=60)
1. Neutral zone.
2. Dentogenic concept.
3. Significance of rest position of the mandible.
4. Selective pressure impression.
5. Selective Grinding.
6. Gingival Retraction.
7. Relining & Rebasing.
8. Altered cast technique.
9. Richmond crown.
10. Implant denture.
11. Needle’s chew in technique.
12. Denture Stomatitis.
*******

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