Fixed Prosthodontics SDLE MCQ | Part 1

Fixed Prosthodontics

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1 / 50

Category: Fixed Prosthodontics

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

Cantilever FPD

FPD #26, #23 four-unit

Maryland bridge

FPD #23, #26 three-unit

2 / 50

Category: Fixed Prosthodontics

2) 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

3 / 50

Category: Fixed Prosthodontics

3) What is considered a parafunctional habit?

Erosion

Chewing

Abfraction

Clenching

4 / 50

Category: Fixed Prosthodontics

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

Poly Meth Meth

Bis Acrylic

Poly Vin Meth Meth

Poly Eth Meth

5 / 50

Category: Fixed Prosthodontics

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

Perform RCT

Educate the patient and construct a night guard

Reassure the patient

Smooth the teeth roughness

6 / 50

Category: Fixed Prosthodontics

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

Sulfuric acid

Hydrofluoric acid 5-10%

Phosphoric acid 37%

Hydrofluoric acid 3-5%

7 / 50

Category: Fixed Prosthodontics

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

High cost

Poor esthetics

Shrinking of the temporary

Weak strength

8 / 50

Category: Fixed Prosthodontics

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

2 mm subgingival

1.5 mm subgingival

1 mm supragingival

0.5 mm supragingival

9 / 50

Category: Fixed Prosthodontics

9) What is an advantage of ceramic restorations?

Opaque

Translucent

Tensile

Transparent

10 / 50

Category: Fixed Prosthodontics

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

Use smaller core

Do crown lengthening

Do gingivectomy

Trough with laser for gingival retraction

11 / 50

Category: Fixed Prosthodontics

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

Poor retention

Fracture

Undercut

Overcontour preparation

12 / 50

Category: Fixed Prosthodontics

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

Fracture

Undercut

Vertical deep finish line

Over contour preparation

13 / 50

Category: Fixed Prosthodontics

13) What is the etchant used for porcelain?

Phosphoric acid 37%

Sulfuric acid

Nitric acid

Hydrofluoric acid 9.5 to 10%

14 / 50

Category: Fixed Prosthodontics

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

Zirconia

Diamond

Carbide

Steel

15 / 50

Category: Fixed Prosthodontics

15) What is a disadvantage of a zirconia core?

Weak bonding with porcelain

Fracture

Marginal discrepancy

High cost

16 / 50

Category: Fixed Prosthodontics

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

Sanitary

Modified ridge lap

Conical/bullet

Ovate

17 / 50

Category: Fixed Prosthodontics

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

Supragingival

Equigingival

Supra or suprabony

Subgingival

18 / 50

Category: Fixed Prosthodontics

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

Retraction cord engagement

Material tearing

Accelerate setting

Poor detail reproduction

19 / 50

Category: Fixed Prosthodontics

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

Cohesive

Fatigue

Static

Adhesive

20 / 50

Category: Fixed Prosthodontics

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

Composite veneer

Full crown

Onlay

Porcelain veneer

21 / 50

Category: Fixed Prosthodontics

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

Tissue irritation

Less esthetic

Poor retention

Fracture

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 + Epinephrine and PVS impression

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

RC + ferric sulfate with polyether impression

Extract the tooth

23 / 50

Category: Fixed Prosthodontics

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

CR

CO

MIC

Between them

24 / 50

Category: Fixed Prosthodontics

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

Over contour and opaque

Over contour and translucent

Under contour and opaque

Under contour and translucent

25 / 50

Category: Fixed Prosthodontics

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

Take PA

Stop the procedure

Use hemostatic agent

Apply pressure

26 / 50

Category: Fixed Prosthodontics

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

Fracture

Poor fit

Sensitivity to cement

Hyperocclusion

27 / 50

Category: Fixed Prosthodontics

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

RCT

Extraction

Adjust occlusion

SRP

28 / 50

Category: Fixed Prosthodontics

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

Centric

Non-working

Protrusive

Working

29 / 50

Category: Fixed Prosthodontics

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

3-1.1 mm

1-0.5 mm

2-0.7 mm

4-1.5 mm

30 / 50

Category: Fixed Prosthodontics

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

Collarless

Metalless

Metal margin

Porcelain margin

31 / 50

Category: Fixed Prosthodontics

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

Extrusion + osseous surgery

Gingivectomy

Post, core, and crown

Extraction

32 / 50

Category: Fixed Prosthodontics

32) 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

33 / 50

Category: Fixed Prosthodontics

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

21-19 mm

19-17 mm

22-20 mm

20-18 mm

34 / 50

Category: Fixed Prosthodontics

34) What is the most aesthetic pontic design?

Conical

Sanitary

Ridge lap

Ovate

35 / 50

Category: Fixed Prosthodontics

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

Lingual of mand

Buccal of max

Distal incline of mand

Mesial incline of max

36 / 50

Category: Fixed Prosthodontics

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

Buccal of lower

Buccal of upper

Reduce lower incisal edge

Reduce upper incisal edge

37 / 50

Category: Fixed Prosthodontics

37) What is the role of flux in soldering?

Act as separating medium

Improve flow of solder

Reduce melting temp of solder

Prevent oxidation

38 / 50

Category: Fixed Prosthodontics

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

0.5-0.7 mm

1.6-2 mm

1-1.5 mm

2-2.5 mm

39 / 50

Category: Fixed Prosthodontics

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

Deep scaling and root planing

Suction the crown and assess restorability

Proceed with endodontic treatment through PFM crown

Combined endodontic and periodontal surgery

40 / 50

Category: Fixed Prosthodontics

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

Protrusive

Centric

Lateral

Retrusive

41 / 50

Category: Fixed Prosthodontics

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

Retention and support

Preservation of tooth structure

Preservation of periodontium

Marginal integrity

42 / 50

Category: Fixed Prosthodontics

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

Arbitrarily and occlusal rim in CR

Arbitrarily and occlusal rim in MIP

Face bow maxillary and occlusal rim in CR

Face bow maxillary and occlusal rim in MIP

43 / 50

Category: Fixed Prosthodontics

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

Gingival margin trimmer

Carbide bur

Diamond instrument

Chisel

44 / 50

Category: Fixed Prosthodontics

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

Boley gauge

Iwanson caliper

Occlusal gauge

Periodontal probe

45 / 50

Category: Fixed Prosthodontics

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

Extract the tooth

Fix it in the clinic

Re-cement the crown

Remake it in the lab

46 / 50

Category: Fixed Prosthodontics

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

Feather

Window

Lapped

Butt joint

47 / 50

Category: Fixed Prosthodontics

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

Reattach the crown

Remove the post and fit a new post

Extract the tooth

Remake everything

48 / 50

Category: Fixed Prosthodontics

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

Use different cement

Do endo and post & core

Re-cement the crown

Extract the tooth

49 / 50

Category: Fixed Prosthodontics

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

None of the above

Indirect

Direct

Indirect-direct

50 / 50

Category: Fixed Prosthodontics

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

Strong and durable

Cost-effective

Easy to clean

Esthetic and no surgery required

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