Loads of prayers for sir Adnan 😊

Adjusting Occlusal and Interproximal Contact

01:
Inadequate proximal contacts in a gold casting can be amended by?

Options:

A. Casting

B. Welding

C. Soldering

D. Investing

E. divesting

Key: C

02:
The material remaining in the reservoir of the mold after a dental
casting is referred to as?

Options:

A. Sprue hole

B. Sprue pin

C. Crucible former
 D. Sprue button

E. Metal alloy

Key: D

Adjustment of Casting

03:

The purpose of a sprue is to provide a channel through which molten

alloy can reach the mould after the wax has been eliminated. A
spherical dilated space waxed onto a sprue is known as reservoir so
which of the following sprue reservoirs provide for prevention?

Options:

A. Creep

B. Fracture of casting

C. Air bubbles

D. Localized shrinkage porosity

E. Internal porosity

Key: D

04:
Cellulose and ceramic ring liners are routinely used by dental
laboratories. The Wetting the ring liner helps in increasing?
Options:

a) Hygroscopic expansion

b) Strength

c) Thermal expansion

d) Setting time

e) Working time

Key: a

05:
Localized shrinkage porosity is seen when there?

Options:

A. Thick sprue

B. No reservoir

C. Investment heated strongly

D. Inadequate air discharge

E. Thin sprue

Key: E

Burnout and Casting

06:
During casting of the alloy the reducing part of the flame should be
used in order to prevent

Options:

a) Reduction of the alloy

b) Reduction of mercury

c) Oxidation of the alloy

d) Oxidation of the metal

e) Reduction and oxidation of the alloy

Key: C

07:
Investment material used for noble metal alloys is

Options:

a) Gypsum bonded

b) Phosphate bonded

c) Silica bonded

d) Acrylic bonded

e) Calci bonded

Key: A

08:
Impurities in casting is removed by?
Options:

a) Annealing

b) Conditioning

c) Pickling

d) Degassing

e) Glazing

Key: c

09:
In a flame torch which type of gas is used for casting metal ceramic
alloy?

Options:

a) Oxyacetylene gas

b) Nitrogen gas

c) Chlorine gas

d) Oxygen gas

e) Hydrogen gas

Key: d

Dies and Casting

10:
The simplest and easiest method of die systems based on design is:

Options:

a) Dowel pin system

b) Pindex system

c) DVA system

d) Zeizer system

e) Working cast and separate die system

Key: e

11:
Cemented pin technique is also known as:

Options:

a) Post-pour technique

b) Pre-pour technique

c) DVA system

d) Curved Dowel pin system

e) Straight Dowel pin system

Key: a

12:
In curved Dowel pin system, the curved pins will project from?

Options:
a) Sides of the base of the cast

b) Base of the cast

c) Sides of occlusal surface

d) Occlusal surface

e) Anywhere in the cast

Key: A

Evaluation of Dental Cast

13:
The term used for a positive replica of a single prepared tooth is?

Options:

A. Die

B. Impression

C. Bridge

D. Crown

E. Model

Key: A

14:
A Pontic is an artificial tooth on a fixed partial denture that replaces the
missing natural tooth. Which of the following statement about pontic is
false?

Options:

A. Replaces natural teeth

B. Restores its function

C. Prevents loss of space

D. For esthetic reasons

E. Transfer of forces to the abutment through the retainers

Key: B

Fabricating Bridges
15:
A conservative approach to replace missing teeth in the aesthetic zone
with Maryland Bridge. In Maryland bridges, the mechanical retention is
developed by:

Options:

A. Macro-porosities present on the tissue surface of the retainer

B. Electromechanical etching

C. Non-Electromechanical etching

D. Micro-porosities present on the tissue surface of the retainer

 E. Chemical only

Key: D

16:
A restoration consisting of 2 to 3 units which is attached by a cementing
medium to natural teeth, roots, implants is known as:

Options:

A. Bridge

B. Crown

C. Inlay

D. Onlay

E. Veneer

Key: A

17:
What are the most common discoloration issue at the cervical region of
tooth that clinicians faced while restoring an anterior tooth with a
metal ceramic restoration?

Options:

A. Yellowish

B. Pinkish

C. Reddish

D. Greenish
E. Greyish

Key: E

18:
Connectors that are immovable between pontic and retainer are known
as?

Options:

A. Rigid connectors

B. Key-way mechanism

C. Non-rigid connectors

D. Freeway connectors

E. Minor connectors

Key: A

Fabrication Methods
19:
If the margin is inadequate or the bridge is rocking, it is preferable to
send the case back to the laboratory with:

Options:

A. Previous impression.

B. Master cast.

C. Working cast
D. Fresh impression.

E. Duplicate cast

Key: D

20:

Which instruments or burs are used to finish the margin to be a fine

edge?

Options:

A. Scalpel

B. Trimmer

C. Burnisher

D. carver

E. Heater

Key: C

Finishing and polishing restorations

21:
The Process of making Dental prosthesis smooth & glossy is known as:

Options:

A. Finishing

B. Grinding
 C. Cutting

D. Glazing

E. Polishing

F. Key: E

22:

During finishing and polishing the artificial prosthesis the amount of

pressure applied while using an abrasive should be:

Options:

A. Light

B. Heavy

C. Normal

D. No pressure at all

E. Depends on abrasive.

Key: A

23:

During the finishing and polishing surface defects of dental prosthesis

can be removed using:

Options:

A. Cutting

B. Grinding stone and rubber wheel

C. Rubber wheel and diamond burs

D. Diamond burs

E. Cutting disc

F. Key: B

Functional Occlusion:
24:

The dentist or dental technologist installs the plaster models of the

upper and lower jaw in the articulator so what is the Main purpose of
articulation?

Options:

A. To access occlusion

B. Fabrication of denture

C. Fabrication of the landmarks

D. Fabrication of surfaces

E. Form relation

Key: A

25:
Classification of the bite (occlusion) is divided into three main
categories. Which type of occlusion is seen on the occlusal surfaces of
teeth on one side when they occlude simultaneously with a smooth
uninterrupted glide?

Options:

A. Unilateral balanced occlusion.

B. Bilateral balanced occlusion.

C. Protrusive occlusion

D. Lateral occlusion

E. Simple occlusion

Key: A

Introduction to bridges and crown

26:

Crown is an?

Options:

A. Intracoronal restoration

B. Extra coronal restoration

C. Prosthesis

D. Inlay

E. onlay

Key: B
27:
Fixed partial denture that are designed when abutment teeth are
prepared only one side of the missing edentulous space is called:

Options:

A. implant supported bridge

B. cantilever bridge

C. Maryland bridge

D. Veneer

E. Simple fixed bridge

Key: b

28:
Restoration used as a thin layer over the facial surface of the tooth for
esthetics reasons is known as?

Options:

A. Laminate veneers

B. Abutment

C. Partial Veneer Crowns

D. Pontic

E. Inlay

Key: A
29:
If the prosthetic crown covers all five surfaces of the clinical crown
which have the maximum retention is known as?

Options:

A. Full veneer crown

B. Partial veneer crown

C. Anatomical crown

D. Clinical crown

E. Prosthetic crown

Key: A

Introduction to Crown:

30:
Any single dental prosthesis that is luted, screwed or mechanically
attached to natural teeth, tooth roots and/or implant abutments is
known as:

Options:

A. pontic

B. Abutment

C. Crown

D. Bridge
 E. Retainer

Key: C

31:

A crown that is used as a part of fixed partial denture for retention and
support from the abutment tooth is called as a:

Options:

A. Retainer

B. Pontic

C. Connector

D. Abutment

E. Bridge

Key: A

32:
A fixed partial denture is not preferred in the following situation:

Options:

A. Large amount of bone loss as in trauma

B. Short span edentulous arches

C. Patient’s preference

D. Presence of sound teeth that can offer support

E. Cases with ridge resorption where RPD cannot be stable

Key: A

33:

Regarding porcelain-fused-to-metal crowns (PFMs), which one of the

following statements is true?

Options:

A. The junction of metal and ceramic should be absorbing most of

the occlusal loads

B. The metal should be absorbing most of the occlusal loads

C. The ceramic should be absorbing most of the occlusal loads

D. They should not be used in situations of high occlusal loads

E. They are strong enough to withstand occlusal loads irrespective of

which part of the crown absorbs the loads

Key: B

Margins Preparation and Designing

34:

The finish line which has a gingival finish wall perpendicular to the axial
surfaces of teeth is known as?

Options:

a. Chamfer

b. Knife edge

c. Shoulder
 d. Bevel

e. Chamfer on lingual side

Key: c

35:

The best gingival finish line for an all ceramic crown is?

Options:

a. Chamfer

b. knife edge

c. Shoulder

d. Shoulder on facial side

e. Chamfer on lingual side

Key: C

36:

The following is an incorrect statement about shoulder preparation?

Options:

a. more commonly recommended in all ceramic restoration

b. gingival finish wall is perpendicular to the axial surface of teeth

c. Conserve tooth structure compared to other finish line

d. wide ledge gives resistance

e. Used where aesthetics is primary concern

Key: C

Restorations on various types of articulator

37:

Mean value articulator is a mechanical tool for imitating jaw

movements so which dimension is used for designing mean value
articulator?

Options:

A. Fixed dimensions

B. Movable dimensions

C. Incisal guidance

D. Upper member

E. Lower member

Key: A

38:

What is the minimum requirement of an articulator to keep the cast in

the correct relationship?

Options:

A. Horizontal relationship

B. Vertical relationship

C. Side to side relationship

D. On one plane
 E. Both Vertical and Horizontal Relationship

Key: E

39:

Incisal guidance of the placed artificial teeth should overlap with the
incisal guidance of an articulator to avoid interference during:

Options:

A. Protrusive movement

B. Horizontal movements

C. Vertical movement

D. Proximal movements

E. Buccal movements

Key: A

40:

Which of the following articulator is capable of being adjusted to follow

the mandibular movement in all directions?

Options:

A. Fully adjustable articulator

B. Semi adjustable articulator

C. Mean value articulator

D. Nonadjustable articulator
 E. Hanau wide value articulator

Key: A

Soldering:

41:

The maximum penetration depth of the laser welding unit is?

Options:

a) 1 mm

b) 2 mm

c) 2.5 mm

d) 3 mm

e) 3.5 mm

Key: c

42:

Which type of solders are most commonly used in fixed

prosthodontics?

Options:

a) Zn

b) Sn

c) Co and Cr
 d) Cu and Au

e) Au and Ag

Key: d

Spruing and Investment

43:

Which of the following is used as the pattern material in precision

investment casting?

Options:

A. Metal

B. Molten wax

C. Plastic

D. Wood

E. Acrylic

Key: b

44:

Widely used Investment material for base metal alloys is:

Options:

A. Gypsum bonded

B. Silica bonded

C. phosphate bonded
 D. Calcium bonded

E. Phosphate bonded and Silica Bonded

Key: E

45:

For dimensional accuracy of wax pattern a sprue should be placed at

which of following angle?

Options:

A. 40 degree

B. 45 degree

C. 60 degree

D. 90 degree

E. 75 degree

Key: B

46:

Which of the following statement is correct regarding sprue?

Options:

A. 2.5mm (12 gauge) sprues for premolar metal ceramic

restorations.

B. 2.5mm (10 gauge) sprues for molar metal ceramic restorations.

 C. 1.0mm (10 gauge) sprue for premolar partial veneer restorations.

D. Broad sprues are sufficient for casting to be done on a centrifugal

machine.

E. Sprue should be placed at 75 degree angulation.

Key: B

Terminologies used in fixed

47:

A crown that is used as a part of fixed prosthesis, for retention and

support from the abutment tooth is called as.

Options:

A. Pontic

B. Connector

C. Abutment

D. Retainer

E. Bridge

Key: D

48:

Which crown depicts the intraorally visible tooth structure?

Options:

A. Artificial crown
 B. Clinical crown

C. Anatomical crown

D. Metal facing crown

E. Restorations.

Key: B

49:

During mastication all forces acting on the pontic are transferred to the
abutment through?

Options:

A. Abutment

B. Pontic

C. Connector

D. Crown

E. Retainers

Key: E

50:

While making a crown for erosion of tooth substances, ideal choice of

crown isLead in /

Options:

A. Porcelain crown
 B. Metal crown

C. PFM crown

D. Acrylic crown

E. Partial crown

Key: C

51:

The inferior portion of the refractory flask that provides a negative

likeness or dimple into which a metal is cast in the refractory
investment is called:

Options:

a) Mould

b) Sprue former

c) Investment material

d) Casting ring

e) Crowns

Key: d

52:

The thick round ball of wax is added to the sprue Channel to prevent
localized shrinkage porosity is called:

Options:
 A. Casting ring

B. Ring liner

C. Sprue

D. Crucible

E. Reservoir

Key: E