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Guidelines_English_Final
تحميل الدليل التدريبي

أسئلة شائعة


 

  

King Saud University

College of Dentistry

Department of Prosthetic Dental Sciences

 

 

 

SDS 431 (M) COURSE

 

CLINICAL FIXED PROSTHODONTICS I

 

 

EXAMINATION

 

 

 

DR. ABDULLAH AL-FARRAJ

Course Director

 

 

 

NAME                          :        ________________________

 

COMPUTER NO.      :        ________________________

 

D A T E                        :       

 

TIME ALLOWED     :        2  Hour

 

NO. OF PAGES         :           7_ pages including the cover page.

 

 

*** GOOD LUCK ***

 

 

·                    When posterior teeth are not replaced:

 

a.     The patient has a significant risk of suffering temporomandibular joint pain.

b.     The patient usually suffers indigestion.

c.      The patient may or may not complain of chewing problems

d.     All of the above

 

·                    FPD’s with distal cantilever extensions:

 

a.     Have a poorer prognosis

b.     Should never be considered in place of distal extension RPDs

c.      Have a greater risk of loss retention on the primary abutment

d.     All of the above

 

·                    The main difference between the occlusal scheme of a natural dentition and a denture is:

 

a.     Canine guidance is the preferred occlusal scheme in denture occlusion

b.     Class III edge-to-edge occlusal relationship is preferable in denture occlusion

c.      Bilateral balanced occlusion is usually necessary in denture occlusion

d.     There is no difference between a natural dentition and a denture occlusion

 

·                    An occlusal interference can be defined as an undesirable occlusal contact that may produce mandibular deviation during:

 

a.     Recording the vertical dimension

b.     Closure to maximum intercuspation

c.      Rest position

d.     Shade selection

 

 

 

 

 

·                    When examining the patient's occlusion, you must carefully assess:

 

a.     The number of occlusal contacts

b.     The position of the occlusal contacts

c.      The presence of occlusal interference

d.     All of the above

    

·                    Which of the following match the requirements of provisional restoration?

 

a.     It is better to have short margin than over contour of the restoration to avoid compression and inflammation of the gingival tissue

b.     Assure optimum esthetics and comfort to the patient

c.      Good marginal adaptation to minimize leakage

d.     Very light occlusal contours to avoid breaking and dislodgement

e.      (b) and (c)

f.       all of the above        

 

·                    A diagnostic wax-up prior to any Prosthetic preparation is recommended:

 

a.     To explain to the patient the intended procedure

b.     To establish an accurate treatment plan

c.      To have a guide for future restoration

d.     A and b

e.      B and c

f.       All of the above

g.     None of the above

 

·                    To manage extrusion of the opposing before FPD construction which of the following statement is correct?

 

a.     Selective grinding is the last priority

b.     Elective devitalization of the pulp is mandatory

c.      Segmental osteotomy is the treatment of choice

d.     Orthodontic intrusion is easy to achieve

e.      All of the above

f.       None of the above

 

 

 

·                    Preparation of periodontally compromised dentition should include:

 

a.     Retentive grooves

b.     Furcation flute

c.      Subgingival finish line

d.     All of the above

e.      None of the above

 

·                    On a mesially tilted molar which one of the following FPD design is acceptable?

 

a.     A segmented bridge

b.     One half preparation on the molar

c.      Orthodontic up righting

d.     All of the above

e.      None of the above

 

·                    Porcelain can be classified by firing temperature into:

 

1.     High-fusing

2.     medium-fusing

3.     low-fusing

 

a.     1 only

b.     2 & 3

c.      all of the above

d.     none of the above

 

·                    In using heat-generated crystal production the following mechanisms have been introduced to strengthen ceramics:

 

1.     Crack-tip interaction

2.     crack-tip shielding

3.     crack boiling

4.     crack-preparation

 

a.     All of the above

b.     1 & 2

c.      1, 2, & 3

d.     1 & 4

e.      None of the above

 

·        Indications of porcelain veneers includes:

 

1.     Hypoplasia

2.     Amelogenesis imperfecta

3.     Diastema – open contacts

4.     conservative preparation

 

a.     1 & 2

b.     1, 2, & 3

c.      all of the above

d.     none of the above

 

·        Contraindications for porcelain laminate veneer includes:

 

1.     Bruxism

2.     large restorations

3.     patients with oral habits causing excessive stress on the    restoration

4.     short teeth

 

a.     None of the above

b.     1, 2, & 3

c.      4 only

d.     all of the above

 

·        In preparing anterior tooth for metal ceramic crowns:

 

1.     Incisal reduction should be minimum of 2.5 mm

2.     Labial reduction should have two planes

3.     Axial reduction should not exceed 1.2 mm

4.     for lingual contact in ceramic, reduction should be 0.5 mm

 

a.     Only 1 is correct

b.     Only 3 & 4 are correct

c.      Only 2 & 3 are correct

d.     All of the above are correct

e.      None of the above is correct

 

 

 

 

 

·        In preparation of a cast post and core for single rooted tooth:

 

1.     First obtain post space

2.     first prepare the remaining tooth structure

3.     Second obtain post space

4.     second prepare the remaining tooth structure

5.     create anti-rotational grooves

 

a.     1 & 4

b.     2 & 3

c.      1 & 5

d.     None of the above

 

·        To increase the resistance form in the preparation of # 36:

 

1.     Boxes should be prepared distally and mesially

2.     boxes should be prepared labially and lingually

3.     The boxes should be within amalgam restoration

4.     the boxes should have maximum of one third amalgam or composite restoration

 

a.     1 only

b.     2 only

c.      3 only

d.     4 only

e.      1 & 4

f.       2 & 3

 

·        When examining the patient’s occlusion, you can use:

 

a.     Articulating paper

b.     Direct or indirect vision

c.      Cast of the patient dentition

d.     All of the above

 

 

 

 

 

 

 

 

·        List the indications in using prefabricated post verses cast post and core.

 

     ________________________________________________________

     ________________________________________________________

     ________________________________________________________

     ________________________________________________________

 

·        What are the principles of tooth preparation?

 

     ________________________________________________________

     ________________________________________________________

     ________________________________________________________

     ________________________________________________________

 

·        The main disadvantage of using polymethyl metha accrylate material is:

 

a.     Brittleness

b.     Low flexural strength

c.      increased heat in exothermic reaction

d.     used only in the direct technique

 

·        Pulp protection is a main requirement of provisional restorations. This is important to have a good impression.

 

a.     The first statement is false, the second is true

b.     The first statement is true, the second is false

c.      Both are false

d.     Both are true

 

·        What are the three techniques of provisional restorations relining?

 

     ________________________________________________________

     ________________________________________________________

     ________________________________________________________

 

KEY ANSEWR

 

 

 

 

King Saud University

College of Dentistry

Department of Prosthetic Dental Sciences

 

 

 

SDS 431 COURSE (DUC)

 

CLINICAL FIXED PROSTHODONTICS I

 

 

MID-TERM   EXAMINATION

 

 

 

DR. ABDULLAH AL-FARRAJ

Course Director

 

 

 

NAME                          :        ________________________

 

COMPUTER NO.      :        ________________________

 

D A T E                        :        Wednesday, 30th November 2005

 

TIME ALLOWED     :        One (1) Hour

 

NO. OF PAGES         :           7_ pages including the cover page.

 

 

*** GOOD LUCK ***

 

 

1.     When posterior teeth are not replaced:

 

a.     The patient has a significant risk of suffering temporomandibular joint pain.

b.     The patient usually suffers indigestion.

c.      The patient may or may not complain of chewing problems

d.     All of the above

 

2.     FPD’s with distal cantilever extensions:

 

a.     Have a poorer prognosis

b.     Should never be considered in place of distal extension RPDs

c.      Have a greater risk of loss retention on the primary abutment

d.     All of the above

 

3.     The main difference between the occlusal scheme of a natural dentition and a denture is:

 

a.     Canine guidance is the preferred occlusal scheme in denture occlusion

b.     Class III edge-to-edge occlusal relationship is preferable in denture occlusion

c.      Bilateral balanced occlusion is usually necessary in denture occlusion

d.     There is no difference between a natural dentition and a denture occlusion

 

4.     An occlusal interference can be defined as an undesirable occlusal contact that may produce mandibular deviation during:

 

a.     Recording the vertical dimension

b.     Closure to maximum intercuspation

c.      Rest position

d.     Shade selection

 

 

 

 

 

5.     When examining the patient's occlusion, you must carefully assess:

 

a.     The number of occlusal contacts

b.     The position of the occlusal contacts

c.      The presence of occlusal interference

d.     All of the above

    

6.     Which of the following match the requirements of provisional restoration?

 

a.     It is better to have short margin than over contour of the restoration to avoid compression and inflammation of the gingival tissue

b.     Assure optimum esthetics and comfort to the patient

c.      Good marginal adaptation to minimize leakage

d.     Very light occlusal contours to avoid breaking and dislodgement

e.      (b) and (c)

f.       all of the above        

 

7.     A diagnostic wax-up prior to any Prosthetic preparation is recommended:

 

a.     To explain to the patient the intended procedure

b.     To establish an accurate treatment plan

c.      To have a guide for future restoration

d.     A and b

e.      B and c

f.       All of the above

g.     None of the above

 

8.     To manage extrusion of the opposing before FPD construction which of the following statement is correct?

 

a.     Selective grinding is the last priority

b.     Elective devitalization of the pulp is mandatory

c.      Segmental osteotomy is the treatment of choice

d.     Orthodontic intrusion is easy to achieve

e.      All of the above

f.       None of the above

 

 

 

9.     Preparation of periodontally compromised dentition should include:

 

a.     Retentive grooves

b.     Furcation flute

c.      Subgingival finish line

d.     All of the above

e.      None of the above

 

10.            On a mesially tilted molar which one of the following FPD design is acceptable?

 

a.     A segmented bridge

b.     One half preparation on the molar

c.      Orthodontic up righting

d.     All of the above

e.      None of the above

 

11.            Porcelain can be classified by firing temperature into:

 

1.     High-fusing

2.     medium-fusing

3.     low-fusing

 

a.     1 only

b.     2 & 3

c.      all of the above

d.     none of the above

 

12.            In using heat-generated crystal production the following mechanisms have been introduced to strengthen ceramics:

 

a.     Crack-tip interaction

b.     crack-tip shielding

c.      crack boiling

d.     crack-preparation

 

a.     All of the above

b.     1 & 2

c.      1, 2, & 3

d.     1 & 4

e.      None of the above

 

13.            Indications of porcelain veneers includes:

 

1.     Hypoplasia

2.     Amelogenesis imperfecta

3.     Diastema – open contacts

4.     conservative preparation

                                

a.     1 & 2

b.     1, 2, & 3

c.      all of the above

d.     none of the above

 

14.            Contraindications for porcelain laminate veneer includes:

 

1.     Bruxism

2.     large restorations

3.     patients with oral habits causing excessive stress on the    restoration

4.     short teeth

 

a.     None of the above

b.     1, 2, & 3

c.      4 only

d.     all of the above

 

15.            In preparing anterior tooth for metal ceramic crowns:

 

1.     Incisal reduction should be minimum of 2.5 mm

2.     Labial reduction should have two planes

3.     Axial reduction should not exceed 1.2 mm

4.     for lingual contact in ceramic, reduction should be 0.5 mm

 

a.     Only 1 is correct

b.     Only 3 & 4 are correct

c.      Only 2 & 3 are correct

d.     All of the above are correct

e.      None of the above is correct

 

 

 

 

 

16.                        In preparation of a cast post and core for single rooted tooth:

 

a.     First obtain post space

b.     first prepare the remaining tooth structure

c.      Second obtain post space

d.     second prepare the remaining tooth structure

e.      create anti-rotational grooves

 

a.     1 & 4

b.     2 & 3

c.      1 & 5

d.     None of the above

 

17.                        To increase the resistance form in the preparation of # 36:

 

1.     Boxes should be prepared distally and mesially

2.     boxes should be prepared labially and lingually

3.     The boxes should be within amalgam restoration

4.     the boxes should have maximum of one third amalgam or composite restoration

 

a.     1 only

b.     2 only

c.      3 only

d.     4 only

e.      1 & 4

f.       2 & 3

 

18.                        When examining the patient’s occlusion, you can use:

 

a.     Articulating paper

b.     Direct or indirect vision

c.      Cast of the patient dentition

d.     All of the above

 

19.                        The main disadvantage of using polymethyl metha accrylate material is:

 

a.     Brittleness

b.     Low flexural strength

c.      increased heat in exothermic reaction

d.     used only in the direct technique

20.                        Pulp protection is a main requirement of provisional restorations. This is important to have a good impression.

 

1.     The first statement is false, the second is true

2.     The first statement is true, the second is false

3.     Both are false

4.     Both are true

 

21.                        The main action of the anterior belly of the digastric muscle during mastication is to:

 

a.     Open the mouth

b.     Close the mouth

c.      Elevate the uvula

d.     Has no significant role during mastication

 

22.                        List the indications in using prefabricated post verses cast post and core.

 

     ________________________________________________________

     ________________________________________________________

     ________________________________________________________

     ________________________________________________________

 

23.                        What are the principles of tooth preparation?

 

     ________________________________________________________

     ________________________________________________________

     ________________________________________________________

     ________________________________________________________

 

24.                        What are the three techniques of provisional restorations relining?

 

     ________________________________________________________

     ________________________________________________________

          __________________________________________

 

 

 

 

 

 

 

 

           

 

 

 

 
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