Fixed Prosthodontics Department Questions bank Level 4

Bridge design lecture

I- Choose the correct answer:

1. Single tooth can be replaced with a single abutment→ saving adjacent

teeth from destructive preparation is called………...
a) Fixed-fixed bridge c) Three-quarter crown
b) Dental implant d) Mesial-half crown

2. The main difference between natural tooth and dental implant is

occurrence of…………………….
a) Gingivitis c) Periodontitis
b) Caries d) Looseness and extraction

3. Resin bonded tooth-supported F.P.D is indicated in………..

a) Patient with bounded large edentulous area
b) Deep vertical overlap
c) Sufficient enamel for bonding
d) Pt's with muscles of mastication too well developed

4. Abutment used for FPD should have the following criteria except………
a) No mobility c) indirect pulp capping
b) Proper C/R i.e. 2/3 d) proper root configuration

5. If abutment has intact facial surface / adequate height / and bulk→

therefore………………………………retainers more indicated to be used.
a) Metal-ceramic c) partial coverage
b) Post crown d) All ceramic

6. In case of recent extraction…………….. is indicated

a) Ridge lap c) Modified ridge lap
b) Ovate pontic d) Hygienic pontic

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7. …………………… should be large to withstand occlusal forces but it
should provide embrasure space for plaque control.
a) Retainer c) Connector
b) Abutment d) Pontic

8. To Solve problems of malaligned abutments…………………..can be used.

a) Seven-eighths retainer c) Non-rigid connector
b) Rigid connector d) Three-quarter retainer

9. Abutment teeth for cantilever F.P.D should have………………..

a) Short clinical crown c) Good crown/root ratio

b) Necrotic pulp d) Insufficient remaining tooth structure

10. Replacing missing upper central incisor in case of

diastema……………...can be used as abutments.

a) Other central and both upper laterals c) Upper lateral and other central
b) Upper lateral and canine d) Other central only

11. First choice for replacement of missing upper central incisor is………

a) Conventional fixed-fixed bridge c) Resin bonded bridge

b) Dental implant d) Cantilever bridge

12. The most common design indicated for replacement of missing upper
lateral incisor is………………………… bridge.

a) Conventional fixed-fixed c) Fixed-free

b) Implant-supported d) Resin bonded

13. Teeth which used as abutments for replacement of missing lower second
premolar are………………….

a) Lower first and second molar c) lower first premolar & first molar
b) Lower first premolar and canine d) lower first molar only

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II- True or False

1. Full arch can be replaced by implant-supported complete prosthesis. ( ‫) صح‬

2. In dry mouth (natural teeth better than dental implant → otherwise

caries) ( ‫) خط‬

3. Bilateral edentulous space with more than 2 teeth missing on one side

can be treated using Implant supported fixed partial denture. ( ‫) صح‬

4. Pulp capped teeth can be used as FPD abutments. ( ‫خطا‬ )

5. Selected abutment tooth should be vital whenever possible. ( ‫صح‬ )

GOOD LUCK

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Fixed Prosthodontics Department Questions bank Level 4

Retainer lecture
I- Choose the correct answer :

1. The followings are the ideal requirements of retainer except:

a) Provides maximum retention.
b) Gives maximum esthetics.
c) Needs excessive amount of abutment preparation.
d) Preserves vitality of the prepared abutments.

2. Role of luting agent during cementation of retainer is:

a) Decrease the retention of resin bonded bridges.
b) Seal the space between retainer and the abutment
c) Provide proper path of insertion
d) Ensure marginal adaptation

3. Short clinical crown can be treated by:

a) Crown lengthening/ or intentional root canal treatment c) Tooth extraction
b) Partial coverage restoration. d) Enameloplasty

4. Teeth with extensive caries can be treated by……........... to increase

retention & resistance form to the preparation.

a) Full-coverage restoration only

b) Partial coverage restoration
c) Root canal treatment then post & core
d) Root canal treatment and conventional restoration

5. Which type of restoration is indicated in the case of passive eruption?

a) Partial coverage restoration
b) Full-coverage restoration
c) Post & core then full coverage
d) Metal-ceramic restoration (partial veneer)

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6. In case of tilted abutment, FPD is some time made with……………..
a) Modified preparation design
b) Non-rigid connector
c) Up righting orthodontically or telescopic crown
d) All of the above

7. Line of treatment of pier abutment is……..

a) Mesial-half crown c) Telescopic crown

b) Fixed fixed bridge d) Full coverage with precision attachment

8. Type of restoration that encircles all or part of the remaining tooth

structure, it can strengthen and protect a tooth weaken by caries or trauma
is………………………..
a) Extra-coronal restoration c) Onlay
b) Inlay d) Intra-radicular restoration

9. Which of the following is considered intra-coronal restorations?

a) Metal-ceramic restoration c) Dental implant

b) Post crown d) Inlay and onlay

10. Complete cast crown is more retentive than……………….

a) Three quarter crown c) Metal-ceramic partial veneer

b) Metal-ceramic full veneer d) All-ceramic crown

11. Intermediate abutment that surrounded by two edentulous areas is

called….
a) Cantilever abutment c) Implant abutment
b) Post crown d) Pier abutment

12. Type of restoration indicated in the case of non-vital teeth is…………

a) Post and core +full coverage c) Cantilever restoration

b) Post and core +partial coverage d) Full coverage restoration only

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II- True or False
1. Partial coverage retainers preserve the pulp vitality less than all-
ceramic restoration. ( F )
2. Cervical diameter of prepared tooth should be wider than
occlusal diameter to allow proper path of insertion. ( T )
3. Ideal tooth preparation should provide definite finish line to
ensure intimate proximal contact. ( F )
4. Retainers should be self-retentive i.e. not depending on the
cement. ( T )

5. If large restoration existing proximally → partial coverage (3/4)

with box shaped grooves can be used. ( F )

GOOD LUCK

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Fixed Prosthodontics Department Questions bank Level 4

Tissue dilation lecture

1. Tissue dilation is a……………. displacement of tissue.

a. permanent
b. temporary
c. intermediate
d. long term

2. Tissue displacement should be in ………..direction.

a. apical
b. any
c. lateral
d. vertical

3. Requirements of tissue managements should be the following

except;
a. It must create clean field.
b. It must protect and maintain the health of the periodontal tissue.
c. No problem if there is tearing of the soft tissue and the impression.
d. Should not result in gingival recession.

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4. Tissue management is indicated during tooth preparation
for…….
a. better diagnosis.
b. accurate preparation of subgingival finish line.
c. check the marginal accuracy.
d. Non of the above.

5. Mechanical method of tissue displacement must last more

than….
a. 24 seconds.
b. 1 week.
c. 2 weeks.
d. 24 hours.

6. In this figure it is the method of mechanical tissue displacement

called……
a. temporary crown and softened gutta percha.
b. Copper band with impression material.
c. untreated retraction cord.
d. rubber dam.

7. Contra indications of epinephrine as chemical tissue

displacement are the following except;
a. patient with positive hypertension
b. teeth with intact sulcus
c. Patient with hyperthyroidism d. Patient sensitive to epinephrine

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8. Disadvantage of Ferric Sulfate is……………..
a. can't coagulate blood quickly
b. maximum tissue damage
c. temporary discoloration
d. delay healing than aluminum chloride

9. Retraction cord applicator should be………….

a. thick blade for easy application
b. irregular end to fit into sulcus
c. not angulated to facilitate the placement of cord
d. light weight with comfortable handle

10. Double cord technique is indicated in………………

a. mild bleeding and tissue oozing expected
b. healthy gingival tissue
c. bleeding and oozing localized to one zone
d. sulcus permit only one cord

11. Contraindication of electro surgery is……………..

a. patient with rapid healing
b. thick attached gingiva
c. patient with pace maker
d. with good experienced operator
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

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 Pontic Q Bank

1- All of the following are mucosal contact pontics except

(1 Point)
Ovate

Ridge lap

Sanitary

Modified Ridge lap

2- This shape represent

(1 Point)
Conical pontic

Ridge lap pontic

Ovate pontic

Sanitary pontic

3- Conical pontic is contraindicated for broad residual ridge because of

improper emergence profile
(1 Point)
True

False

4- Increasing proximal contours of adjacent teeth is better than

making F.P.D with under sized pontics
(1 Point)
False

True

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5- ............................. should be avoided as it cause tissue inflammation
and not recommended
(1 Point)
Modified Ridge lap pontic

Ridge lap pontic

Conical pontic

Ovate pontic

6- Modified sanitary pontic increase connector size & decrease stress

concentrated in the pontic & connector
(1 Point)
True

False

7- Modified ridge lap is used for anterior teeth to compensate labio-

lingual width of the ridge
(1 Point)
True

false

8- In mild bone resorption , Inciso-gingival length can be adjusted by

(1 Point)
Dark stains proximal

Removable partial denture

Moving proximal line angle labially

Recontouring of the gingival half of the labial surface

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9- Ovate pontic requires surgical preparation in patient with old
extraction
(1 Point)
True

False

10- ................. gingival portion is shaped like an arch way between the
retainers
(1 Point)
Conical pontic

Ovate pontic

Modified hygienic pontic

Modified Ridge lap pontic

11- In moderate bone resorption , Inciso-gingival length can be

adjusted by all of the following except
(1 Point)
Simulate normal crown and root

Ridge augmentation

Use of pink porcelain

Uneven preparation of then abutment

12- The occluso-gingival thickness of pontic should be no less than

(1 Point)
2 mm

5 mm

3 mm

4 mm

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13- ..................... convex tissue surface which resides in a soft tissue
depression or hollow in the residual ridge (1 Point)
Modified Ridge lap pontic

Ovate pontic

Conical pontic

Ridge lap pontic

14- This shape represent

(1 Point)
Modified Ridge lap pontic

Conical pontic

Ovate pontic

Ridge lap pontic

15- For wider appearance of anterior teeth , Pontic mesiodistal width

can be adjusted by
(1 Point)
Moving proximal line angle labially

Moving proximal line angle lingually

Dark stains proximal

Recontouring of the gingival half of the labial surface

16- ............................... contact the tissue to resemble a letter {T}

whose vertical arm ends at the crest of the ridge (1 Point)
Ovate pontic

Modified Ridge lap pontic

Conical pontic

Ridge lap pontic

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17- Artificial tooth/teeth of F.P.D the replace missing natural tooth/
teeth restoring function, appearance (1 Point)
Abutment

Retainer

Pontic

Connector

18- This shape represent

(1 Point)
Conical pontic

Ridge lap pontic

Modified Ridge lap pontic

Ovate pontic

19- This shape represent

(1 Point)
Modified Ridge lap pontic

Ridge lap pontic

Ovate pontic

Conical pontic

20- The pontic that could be fabricated immediately after extraction

(1 Point)
Ridge lap pontic

Conical pontic

Modified Ridge lap pontic

Ovate pontic

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21- This shape represent (1 Point)
Conical pontic

Ovate pontic

Modified Ridge lap pontic

Ridge lap pontic

22- ........................... has a concave fitting surface that overlaps the

residual ridge bucco-lingually (1 Point)
Ridge lap pontic

Modified Ridge lap pontic

Ovate pontic

Conical pontic

23- Sanitary pontic is one of the non-mucosal contact pontics: (1 Point)

True

False

24- For posterior teeth , space discrepancy is managed by duplicating

the distal half of the tooth and adjusting the size of the mesial half
(1 Point)
True

False

25- .............. is indicated is areas where esthetic is important (1 Point)

Ovate pontic

Hygienic pontic

Conical pontic

Modified Hygienic pontic

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26- Blanching of soft tissue indicating pressure area which is identified
by
(1 Point)
Super floss

Shim stock

Mylar strip

Pressure indicating paste

27- .......................... requires surgical preparation in edentulous space

(1 Point)
Modified Ridge lap pontic

Ovate pontic

Conical pontic

Ridge lap pontic

28- .................................. is contraindicated in ares with minimal

vertical dimension
(1 Point)
Sanitary pontic

Ovate pontic

Conical pontic

Modified Ridge lap pontic

29- Acrylic resin is the most biocompatible pontic material followed by

well polished gold while glazed porcelain is the worst one (1 Point)
True

False

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30- ............................. is indicated when esthetic is not important
(1 Point)
Modified Ridge lap pontic

Ovate pontic

Sanitary pontic

Ridge lap pontic

31- Pressure free contact between the pontic & the underlying tissue is
indicated
(1 Point)
True

False

32- .............................. is convex with only one point of contact at the

center of the residual ridge.
(1 Point)
Conical pontic

Ridge lap pontic

Ovate pontic

Modified Ridge lap pontic

33- Metal-ceramic junction should not be in contact with the residual

ridge ( on the fitting surface)
(1 Point)
True

False

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34- Placing a provisional fixed partial denture with the pontic
extending 1/4 into the socket immediately after extraction is
performed with (1 Point)
Ovate pontic

Ridge lap pontic

Modified Ridge lap pontic

Ridge lap pontic

35- Bending of bridge increase due to (1 Point)

Use an added abutment

Increase pontic thickness

Increase span length

Use alloy with high yield strength

36- Tilting or drifting of adjacent teeth into pontic space can be

manged by
(1 Point)
a) Small pontics

b) ↑ proximal contours of adjacent teeth

c) orthodontic repositioning

d) B and C

37- This shape represent

(1 Point)
Conical pontic

Ridge lap pontic

Modified hygienic pontic

Ovate pontic

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38- The following pontic is indicated in patients with thin ( knife edge )
mandibular ridge (1 Point)
Conical pontic

Modified Ridge lap pontic

Ovate pontic

Ridge lap pontic

39- ........................... has no contact with the edentulous ridge allowing

easy cleaning
(1 Point)
Ridge lap pontic

Ovate pontic

Sanitary pontic

Modified Ridge lap pontic

40- .................... overlaps the residual ridge on the facial surface but
remains clean of the ridge on the lingual surface
(1 Point)
Conical pontic

Modified Ridge lap pontic

Ridge lap pontic

Ovate pontic

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

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 Impression QB
1. The negative form of the prepared tooth or teeth & their relation to the
surrounding oral structures is :-
impression
Tissue displacement
Dupication
Povlsionaliation

2. The ideal impression material should not be with :-

Dimensional stability
Long working time
Short setting time
High viscosity on insertion

3, All of the following are non-elastic impression material except :-

Plaster
Compound
ZOE
Polysulphide

4. All of the following are elastomeric impression material except :-

• Polysulphide
Polyether
Addition silicon
Zinc oxide eugenol

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5. Is a reversible hydrocolloid impression material :-
Aga agar
Alginate
Addition silicon
Condensation silicon

6. An accurate template for soldering can be done using :-

Plaster
Compound
Z0E
Polysulphide

7. Single Cupper band impression technique can be done using :-

plaster
Compound
ZOE
Impression wax

8. Is a non-elastomeric impression material and used in bite registration :-

Plaster
Compound
ZOE
Condensation silicon

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9. A common disadvantage of hydrocolloid impression material is :-
•Synersis and imbibition
Hydrophilic in nature
Poor flow
Stiff on setting

10. Light bodies is used in thin section in custom trays to :-

Decrease polymerization shrinkage
increase flow
improve wetting
Enable electroplating

11. is a hydrophobic impression material :-

Addition silicon
Polyether
Polysulphide
Alginate

12. is a hydrophilic impression material :-

Polysulphide
Condensation silicon
Earlier brands of addition silicon
Recent brands of addition silicon

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13. Dimensional instability of Condensation silicon is caused by … byproduct:
Ethyl alcohol
Water
Hydrogen gas
Ethyl silicate

14. Dimensional instability of Polysulphide is caused by byproduct :-

Ethyl alcohol
Water
Hydrogen gas
sulphoric acid

15. According to dimensional stability, the ideal impression material is

Addition silicon
Agar agar
Polysulphide
Alginate

16. According to stiffness, the most stiffer impression material on setting is

Polyether
Agar agar
Polysulphide
Alginate

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17. The greatest tear strength can be obtained by :-
Condensation silicone
Agar agar
Polysulphide
Alginate

18. Impression tray should not be :-

Perforated
Rigid
Flexible
Dimensionally stable

19. Is a tray with a mesh base used to take impression for both arch and the
inter- occlusal records at the same time :-
Water cooled tray
Heat cured acrylic resin special tray
Light cured acrylic resin special tray
Double bite impression tray

20. Water cooled trays is used with :-

Polyether
Agar agar
Polysulfide
Alginate
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