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Theme 8. Indications, requirements for removable partial dentures (RPD). Properties of main and auxiliary materials which are used for their manufacture.




1.Cast removable partial denture is fabricated for a female patient 63 year old. Main parts of this denture are:

A. *Base, bar, teeth, clasps

B. Metal frame, teeth, base

C. Base, teeth, clasps

D. Metal frame, saddles, teeth

E. Teeth, clasps, bar

 

2.Partial removable denture is fabricated for a male patient 64 year old. What is the function of a base of this denture?

A. *Distributes pressure on mucosa

B. Stabilizes remaining teeth

C. Connects teeth and clasp

D. Increases hygiene of denture

E. Distributes pressure on teeth

 

3.Female patient 64 year old complains about difficulty in taking food owing to absence of teeth on the upper jaw. 18-14, 24-28 teeth are missed. Deep bite. Partial removable denture is planed to fabricate. Which material is used for denture base in this case?

A. *Ftorax

B. Acryloxid

C. Noracryl

D. Boxyl

E. Carbodent

 

4.Removable partial dentures for upper and lower are fabricated for a male patient 54 year old. The advantages of such dentures are the following EXCEPT:

A. *High functional efficiency

B. Economic benefit

C. Hygienity of dentures

D. Esthetics of dentures

E. Not necessary to prepare teeth

 

5.Male patient 64 year old complains about impossibility of chewing. Objectively: 17-14, 24-27 teeth are lost. It was decided to fabricate RPD for the upper jaw. The requirements to the base of denture are the following:

A. *Completely cover maxillary tuberosities

B. Not to cover maxillary tuberosities

C. Partially overlap maxillary tuberosities

D. Finish in front of maxillary tuberosoties

E. Doesn’t matter

 

6.Complete denture with denture soft lining is planned to fabricate for a 64 year-old patient’s lower jaw. Remaining teeth are high, stable, good equator. Soft tissues are irregularly pliable. Which denture base material should be used as soft liner?

A. *Elastoplasts

B. Akrel

C. Boxil

D. Ortoplast

E. Ftorax

 

7.Male patient 52 year old complains about absence of teeth on upper and lower jaws and difficulty in eating. RPD is indicated for this patient with retentive clasps for 14, 23 teeth. Which type of stabilization this clasp arrangement provides?

A. *Transversal

B. Sagittal

C. Diagonal

D. Point

E. Plane

 

8.Male patient 60 year old needs in prosthetics. Objectively: partial absence of upper teeth, lower jaw has 42,41,31,33 teeth. RPD for the lower jaw is indicated for the patient. Which material is preferable for impression fabricating?

A. *Alginate

B. Impression compound

C. Impression plaster

D. Silicone

E. Zinc oxide eugenol

 

9.Complete removable denture is fabricated for a male patient 53 year-old. Objectively: the last 23 tooth is covered by full metal crown, has 1 stage of mobility. Impression will be taken with elastic material. Which impression tray is better to use for such impression material?

A. *Standard perforated tray

B. Wax individual tray

C. Standard nonperforated tray

D. Standard individual tray

E. Polymer individual tray

 

10.RPD base should have such borders in distal areas:

A. *Cover mandibular tuberosities

B. Partially cover mandibular tuberosities

C. Finish before mandibular tuberosities

D. Not cover mandibular tuberosities

E. Nothing mentioned above

 

11.Male patient D., 47 year-old, complains about absence of frontal teeth on the upper jaw, esthetic defect. Objectively: direct bite, 11 tooth is absent. General history: three months ago patient had heart attack. Which dental construction is necessary to fabricate now?

A. *RPD

B. Bridge denture with abutment on 21 tooth

C. Bridge denture with abutment on 21 and 12 teeth

D. Cast removable denture

E. Implant

 

12.Male patient 70 years old needs in prosthetics. Objectively: partial loss of teeth on upper jaw, prominent torus. RPD with double base is planned to fabricate for the patient. Which polymer should be used for the external part of denture base?

A. *Ftorax

B. PM-01

C. Protacryl-M

D. Redont

E. Boxil

 

13.Male patient 46 year-old complains about pain in an area of hard palate while wearing cast removable denture. Examination revealed ulcer of mucosa in an area of denture bar location. What is the reason of the ulcer?

A. *Tight contact of mucosa and bar

B. Excessive pliancy of mucosa

C. High slope of hard palate

D. Eating of solid food

E. Permanent use of the denture

 

14.Cast denture was fabricated for a patient. Its assessment is held now. What is the thickness of denture bar?

A. *5-8 mm

B. 3-5 mm

C. 8-10 mm

D. 10-12 mm

E. Doesn’t matter

 

15.Cast removable denture is fabricated for a patient 28 year old. Objectively: teeth are high, stable. Alveolar ridges are slightly resorpted. Which impression material is better to use in this case?

A. *Stomaflex

B. Dentol-s

C. Repeen

D. Ypeen

E. Sielast-69

 

16.Cast removable denture is fabricated for a 47 year-old patient’s lower jaw. Objectively: teeth are intact, high. Framework is assessed now. What is the optimal width of the lower bar?

A. *2,0-3,0 mm

B. 0,5-1,0 mm

C. 1,0-1,5 mm

D. 1,5-2,0 mm

E. 4,0-5,0 mm

 

17.Male patient 45 year old complains about difficulty in eating of food. Teeth formula:

1817161514131211 / 2122232425262728

0 0 0 0 44434241/ 31323334 0 0 0 0

Teeth are movable (1 stage of mobility). Which dental construction is better to use in this case?

A. *Cast removable denture with retentive-splining clasps

B. Bridge cantilever dentures

C. Conventional removable partial denture

D. Bridge denture with telescopic crowns

E. Cast bridge denture

 

18.Cast removable denture is fabricated for a patient. During parallelometry doctor is planning to determine undercut depth of abutment teeth. Chose the main calibers of undercut gauge.

A. *0,25 0,50 0,75

B. 0,15 0,40 0,65

C. 0,20 0,45 0,70

D. 0,30 0,55 0,80

E. 0,35 0,60 0,85

 

19.Cast removable denture with retaining-splinting clasps is fabricated for a lower jaw of 48 year-old patient. Where should be placed rigid part of cast clasp of Ney system, I type?

A. *Above survey line

B. Along survey line

C. Along anatomic equator

D. Under anatomic equator

E. Under survey line

 

20.Female patient 56 year old complains about pain under cast removable denture bar. Dental anamnesis: denture was inserted a week ago in another dental clinic. Palatal mucosa was traumatized by cast denture bar. What should be the distance between bar and mucosa in order to prevent trauma of mucosa?

A. *0,5 mm

B. 0,2-0,3 mm

C. 1,5-2,0 mm

D. 2-3 mm

E. 5-6 mm

 

Theme 9. Indications, requirements for complete removable dentures. Classification of edentulous arches by Schroder, Keller, Oxman. Properties of main and auxiliary materials which are used for their manufacture.

1.Female patient D., 60 year-old, complains of full absence of teeth on upper jaw. During examination was revealed: moderate atrophy of alveolar ridge and maxillary tuberosities, palate is moderately high. There are pliable and overhang “pillows” in the posterior third of hard palate. The rest of mucosa is moderately pliable, well moistened. Which type of impression should be performed in order to fabricate complete removable denture?

A. *Functional differential

B. Functional mucocompressive

C. Functional itself mucocompressive

D. Functional mucostatic

E. Full anatomic

 

2.Complete removable denture was fabricated for the 60 year old patient’s upper jaw. While pressing on incisal edges of frontal teeth in vestibular direction the denture falls. Examination reveals that distal border doesn’t covers fovea palatinae. Choose the cause of denture falling.

A. *Absence of denture sealing in area of line “Ah”

B. Lengthening of border in the site of pterygomaxillar sulcus

C. Shortened border in frontal area

D. Bad sealing

E. Wrong teeth arrangement

 

3.Complete removable dentures are fabricated for a patient. Dental technician is checking teeth arrangement with lateral movements of mandible. Which curve is the basic curve of transversal movements?

A. *Curve of Wilson

B. Curve of Spee

C. Curve of Bennett

D. Curve of Gyzi

E. Curve of Hanau

 

4.Complete removable denture is fabricated for a patient’s upper jaw. After acrylization the flask was taken out of hot water and cooled under cold tap water. What do you think can happened in the denture base ?

A. *Microcracks appear

B. Gas porosity appears

C. Granular porosity appears

D. Compressive porosity appears

E. Color changes

 

5.Complete removable denture is fabricated for a patient’s lower jaw. During first appointment full anatomic impressions were taken. Which manipulation should perform doctor during next appointment?

A. *Individual tray adjusting

B. Checking of the denture

C. Fabricating of occlusal rims

D. Model fabricating

E. Taking of functional impression

 

6.Complete removable denture is fabricated for a male patient 65 year-old. Lower teeth are going to be set on a glass surface. Dental technician fabricated surface that according to the oral cavity starts from posterior contact point of first premolar and stops at distal-buccal cusp of third molar. What is the base of this setting?

A. *Curve of Spee

B. Transversal curve

C. Middle line

D. Eye’s line

E. Camper’s plane

 

7.Complete removable denture is fabricated for a patient’s lower jaw. Which important index should be copied in impression for correct border of denture along vestibular side of molars area?

A. *External oblique line

B. Internal oblique line

C. Buccal frenum

D. Mandibular tuberosity

E. Retromolar pad

 

8.While patient’s A., 65 year old, examination it was revealed that alveolar process of maxilla severely resorpted in frontal area and moderately in distal site. Choose Type of Keller’s classification for this case/

A. *4

B. 1

C. 2

D. 3

E. –

 

9.Different classifications are used in dentistry to put correct diagnosis. Who from these authors suggested edentulous mandible classification?

A. *Keller

B. Kennedy

C. Gavrilov

D. Vares

E. Shroeder

 

10.Male patient complains of full absence of lower teeth. Through examination it was revealed that alveolar process of lower jaw is considerably and evenly resorpted. Muscles attachment is close to alveolar crest. Which type of edentulous mandible has this patient according to Keller’s classification?

A. *2

B. 3

C. 1

D. 4

E. –

 

11.Female patient K., 73 year old, needs in prosthetics. Objectively: completely edentulous lower jaw, alveolar process is well preserved in frontal site and severely resorbed in distal area. What the type of atrophy due to Keller’s classification?

A. *3

B. 4

C. 2

D. 1

E. –

 

12.Female patient 70 year old complains of complete absence of teeth on the upper jaw. Objectively: considerable atrophy of alveolar process, tuberosities are absent, palate is flat, sulcus locates in the same plane with hard palate. What type of edentulous jaw does this patient have (by Shroeder’s classification)?

A. *3

B. 1

C. 2

D. 4

E. 5

 

13.Male patient C. needs in complete denture for the upper jaw. Objectively: upper jaw is 2 type of atrophy by Shroeder, mucous membrane is 3 type by Supple. Where should denture border be located?

A. *At passive-movable mucosa

B. At sealing valve

C. At active-movable mucosa

D. At sulcus

E. Above active-movable mucosa

 

14.Male patient 60 year old needs in prosthetics. Objectively: full absence of teeth on the upper jaw. Considerable and even atrophy of alveolar process and maxillary tuberosities, palate is flat. Attachment of frena is low. Choose the type of atrophy by Oxman’s classification.

A. *3

B. 4

C. 1

D. 2

E. 5

 

15.Female patient 65 year old complains of impossibility of chewing owing to full absence of upper teeth. Objectively: alveolar processes and tuberosities are absent, palate is flat, frena attach in the middle of alveolar ridge, torus is slightly prominent, mucosa is atrophic, thin, badly pliable. Which type of edentulous jaw is this case?

A. *2 type by Shroeder

B. 4 type by Doinikov

C. 3 type by Shroeder

D. 1 type by Oxman

E. 2 type by Oxman

 

16.Patient C., 68 year old has completely edentulous maxilla. Alveolar process well preserved, deep palate, high attachment of frena. What type of atrophy has this patient?

A. *1 type by Shroeder

B. 1 type by Keller

C. 2 type by Keller

D. 2 type by Shroeder

E. 3 type by Keller

 

17.Edentulous male patient has uneven atrophy of lower jaw. Which answer fits to this case?

A. *4 type by Oxman

B. 1 type by Keller

C. 2 type by Oxman

D. 1 type by Oxman

E. 3 type by Keller

 

18.Complete removable denture is fabricated for a patient. Distal border of the denture should pass at line-Ah or overjet it on 1-2 mm. Where does this line pass?

A. *Anteriorly from foveae palatinae

B. Along maxillary tuberosities

C. Along anatomic border between hard and soft palate

D. Along clinical border between hard and soft palate

E. Posteriorly from foveae palatinae

 

19.Complete removable denture is fabricated for a patient’s lower jaw. Behind last molars there is so called retromolar pad. How must denture pass within it?

A. *Cover 2/3 of retromolar pad

B. Before retromolar pad

C. Completely cover retromolar pad

D. Cover ½ of retromolar pad

E. –

 

20.Denture border is put for the lower jaw complete denture. How must this border pass within internal oblique line?

A. *Cover 4-6 mm beyond it

B. Above it

C. At the same level

D. Cover 1-2 mm beyond it

E. -


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