Fixed Prosthodontics SDLE MCQ | Part 1

Fixed Prosthodontics

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1 / 50

Category: Fixed Prosthodontics

1) A patient with a gold onlay complains of thermal hypersensitivity. What is the cause?

Fracture

Hyperocclusion

Poor fit

Sensitivity to cement

2 / 50

Category: Fixed Prosthodontics

2) A photo shows a high crown on #21 with gingival swelling and tenderness. What is the management?

SRP

Adjust occlusion

Extraction

RCT

3 / 50

Category: Fixed Prosthodontics

3) In a PFM crown, if the porcelain overlaps the cervical margin, what is this called?

Metalless

Metal margin

Porcelain margin

Collarless

4 / 50

Category: Fixed Prosthodontics

4) What is an advantage of ceramic restorations?

Tensile

Transparent

Translucent

Opaque

5 / 50

Category: Fixed Prosthodontics

5) Comparing a three-unit FPD replacing an upper canine with a three-unit FPD replacing a lower canine on the same side, which statement is true?

Upper FPD doesn’t follow Ante’s law

Lower FPD doesn’t follow Ante’s law

Upper canine is subjected to more lateral forces

Lower canine is subjected to more lateral forces

6 / 50

Category: Fixed Prosthodontics

6) A patient has short anterior teeth with brown fluorosis pigmentation. What type of veneer preparation is needed?

Lapped

Window

Butt joint

Feather

7 / 50

Category: Fixed Prosthodontics

7) A picture shows a PFM crown on an upper tooth and a natural lower tooth. What type of interference is present?

Protrusive

Working

Non-working

Centric

8 / 50

Category: Fixed Prosthodontics

8) A patient has a thin gingival phenotype on a prepared tooth. What should you do before taking an impression?

Do gingivectomy

Do crown lengthening

Trough with laser for gingival retraction

Use smaller core

9 / 50

Category: Fixed Prosthodontics

9) What happens if a diamond bur is used with the wrong angulation during preparation?

Undercut

Fracture

Vertical deep finish line

Over contour preparation

10 / 50

Category: Fixed Prosthodontics

10) What type of fracture occurs when porcelain chips at the incisal angle?

Static

Fatigue

Adhesive

Cohesive

11 / 50

Category: Fixed Prosthodontics

11) In tooth preparation for a full ceramic crown, what principle is violated if the axial wall length is 2 mm?

Preservation of periodontium

Retention and support

Preservation of tooth structure

Marginal integrity

12 / 50

Category: Fixed Prosthodontics

12) What is the etchant used for porcelain?

Hydrofluoric acid 9.5 to 10%

Phosphoric acid 37%

Sulfuric acid

Nitric acid

13 / 50

Category: Fixed Prosthodontics

13) A patient complains of food accumulation and bleeding around a PFM crown. What is the management?

Deep scaling and root planing

Combined endodontic and periodontal surgery

Proceed with endodontic treatment through PFM crown

Suction the crown and assess restorability

14 / 50

Category: Fixed Prosthodontics

14) A patient has a chipped PFM crown. What is the best management?

Remake it in the lab

Extract the tooth

Re-cement the crown

Fix it in the clinic

15 / 50

Category: Fixed Prosthodontics

15) After tooth preparation, a putty index is applied to a wax-up cast, and a temporary is made intraorally. What is this technique called?

Indirect-direct

Indirect

None of the above

Direct

16 / 50

Category: Fixed Prosthodontics

16) A lateral incisor is fractured at the gingival level with a long root. What is the best treatment?

Gingivectomy

Extrusion + osseous surgery

Extraction

Post, core, and crown

17 / 50

Category: Fixed Prosthodontics

17) What type of bur is used to cut porcelain?

Steel

Diamond

Zirconia

Carbide

18 / 50

Category: Fixed Prosthodontics

18) What is the most aesthetic pontic design?

Ridge lap

Conical

Ovate

Sanitary

19 / 50

Category: Fixed Prosthodontics

19) A picture shows a tooth preparation with a bur in the wrong angulation. What will happen?

Poor retention

Overcontour preparation

Undercut

Fracture

20 / 50

Category: Fixed Prosthodontics

20) A patient returns two weeks after a metal post-threaded crown fell out. What is the best approach?

Reattach the crown

Remake everything

Extract the tooth

Remove the post and fit a new post

21 / 50

Category: Fixed Prosthodontics

21) What is the healthiest finish line for periodontal health?

1.5 mm subgingival

0.5 mm supragingival

1 mm supragingival

2 mm subgingival

22 / 50

Category: Fixed Prosthodontics

22) A patient had a provisional crown for 2 weeks, and bleeding persists during final impression. What to do?

RC + ferric sulfate with polyether impression

Adjust (or remake) the provisional and take it after 2 weeks

RC + Epinephrine and PVS impression

Extract the tooth

23 / 50

Category: Fixed Prosthodontics

23) What is the best bridge design to replace teeth #24 and #25?

Maryland bridge

FPD #23, #26 three-unit

FPD #26, #23 four-unit

Cantilever FPD

24 / 50

Category: Fixed Prosthodontics

24) Tooth #36 is missing, and you want to fabricate a bridge from #35 to #37, but #26 is supra-erupted. Which side has interference?

Lateral

Retrusive

Protrusive

Centric

25 / 50

Category: Fixed Prosthodontics

25) What is an advantage of a modified ridge pontic?

Easy to clean

Cost-effective

Esthetic and no surgery required

Strong and durable

26 / 50

Category: Fixed Prosthodontics

26) A patient cares about esthetics and wants anterior crowns. What is the healthiest and most esthetic finish line?

Supra or suprabony

Equigingival

Subgingival

Supragingival

27 / 50

Category: Fixed Prosthodontics

27) What is considered a parafunctional habit?

Abfraction

Erosion

Clenching

Chewing

28 / 50

Category: Fixed Prosthodontics

28) A female patient complains of rough teeth surfaces and has mild attrition. What is the immediate management?

Educate the patient and construct a night guard

Perform RCT

Reassure the patient

Smooth the teeth roughness

29 / 50

Category: Fixed Prosthodontics

29) A patient wants to extract a lateral incisor. What is the temporary FPD pontic design?

Sanitary

Conical/bullet

Ovate

Modified ridge lap

30 / 50

Category: Fixed Prosthodontics

30) A patient has edge-to-edge occlusion. Which type of restoration is best?

Composite veneer

Onlay

Porcelain veneer

Full crown

31 / 50

Category: Fixed Prosthodontics

31) What is the minimum preparation thickness for a metal retainer of a resin-bonded bridge?

1-0.5 mm

4-1.5 mm

3-1.1 mm

2-0.7 mm

32 / 50

Category: Fixed Prosthodontics

32) What is a complication of a pontic ridge lap?

Less esthetic

Poor retention

Fracture

Tissue irritation

33 / 50

Category: Fixed Prosthodontics

33) A patient is unsatisfied with the appearance of her 6 anterior PFM crowns. Why?

Under contour and opaque

Over contour and opaque

Over contour and translucent

Under contour and translucent

34 / 50

Category: Fixed Prosthodontics

34) A patient’s crown fell three times after cementation. What is the best management?

Use different cement

Re-cement the crown

Do endo and post & core

Extract the tooth

35 / 50

Category: Fixed Prosthodontics

35) During try-in of a crown, there was an anterior-superior slide. How to adjust?

Distal incline of mand

Lingual of mand

Buccal of max

Mesial incline of max

36 / 50

Category: Fixed Prosthodontics

36) What is the width of a shoulder margin finish line?

1-1.5 mm

1.6-2 mm

2-2.5 mm

0.5-0.7 mm

37 / 50

Category: Fixed Prosthodontics

37) A patient with stable MIC wants to construct a crown. Where should the crown be placed?

Between them

MIC

CR

CO

38 / 50

Category: Fixed Prosthodontics

38) A patient is missing teeth #14-17, #34-37, #44, and #47. How to record occlusion?

Arbitrarily and occlusal rim in MIP

Arbitrarily and occlusal rim in CR

Face bow maxillary and occlusal rim in MIP

Face bow maxillary and occlusal rim in CR

39 / 50

Category: Fixed Prosthodontics

39) For a vital tooth, which material should be avoided?

Poly Eth Meth

Poly Vin Meth Meth

Bis Acrylic

Poly Meth Meth

40 / 50

Category: Fixed Prosthodontics

40) A young patient has eccentric interference but normal centric relation. What should be adjusted?

Buccal of upper

Reduce lower incisal edge

Buccal of lower

Reduce upper incisal edge

41 / 50

Category: Fixed Prosthodontics

41) What instrument is used for beveling during onlay preparation?

Diamond instrument

Gingival margin trimmer

Carbide bur

Chisel

42 / 50

Category: Fixed Prosthodontics

42) What is the concentration of hydrofluoric acid used for etching porcelain in case of chipping?

Hydrofluoric acid 3-5%

Phosphoric acid 37%

Sulfuric acid

Hydrofluoric acid 5-10%

43 / 50

Category: Fixed Prosthodontics

43) What is the role of flux in soldering?

Improve flow of solder

Reduce melting temp of solder

Act as separating medium

Prevent oxidation

44 / 50

Category: Fixed Prosthodontics

44) What is a drawback of acrylic resin temporary crowns?

Poor esthetics

Shrinking of the temporary

Weak strength

High cost

45 / 50

Category: Fixed Prosthodontics

45) What is a disadvantage of a zirconia core?

Marginal discrepancy

High cost

Fracture

Weak bonding with porcelain

46 / 50

Category: Fixed Prosthodontics

46) While doing a post preparation, sudden bleeding occurs. What is the first step?

Take PA

Stop the procedure

Apply pressure

Use hemostatic agent

47 / 50

Category: Fixed Prosthodontics

47) During try-in, there was high occlusal contact. What instrument is used to measure crown thickness?

Occlusal gauge

Iwanson caliper

Periodontal probe

Boley gauge

48 / 50

Category: Fixed Prosthodontics

48) What problem might a dentist face when taking a PVS impression on inflamed gingiva?

Poor detail reproduction

Material tearing

Accelerate setting

Retraction cord engagement

49 / 50

Category: Fixed Prosthodontics

49) Gutta percha length is 22 mm. What is the length of the post?

19-17 mm

22-20 mm

21-19 mm

20-18 mm

50 / 50

Category: Fixed Prosthodontics

50) A patient with a history of myocardial infarction needs a PFM crown. What is the best approach?

Defer the treatment

Extract the tooth

Do it and avoid retraction cord with Epinephrine

RPD

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