Theme 14. Clinical aspect for using bridge dentures.

1. Requirements (intangibles) of bridge construction include:

1. *All of the above

2. Forces developed by the oral mechanism and by the resistance of the tooth and supporting tissue to them

3. Modifications of normal tooth form that reduce forces or increase resistance to them

4. Establishing normal tissue tone

5. –

2. Contraindications to bridges are

1. *All of the above

2. When space is of such length that additional load will impair health around abutments

3. When the space length requires a beam of a such Mension that embrasures will be greatly reduced and underlying tissue overprotected

4. When previous prosthesis produced an unfavorable reaction in mucous membrane

5. –

3. What from the following cannot be retainer in fixed bridge denture?

A) *clasp

B) partial crown

C) crown

D) pivot tooth

E) inlay

4. Basic features of functional tooth value:

À) *tooth mobility, bone condition

B) color and size of tooth

C) gingival inflammation and color of tooth

D) mobility of tooth and dental plague

E) dental plague and inflammation of gum

5. When we need to take more supporting teeth in bridge prosthesis?

A - Pathological mobility of tooth; B - wedge-shaped defect of teeth; C - after apical resection; D - patient older than 60; E - bone atrophy

1. *A,C,E

2. A,C,D

3. A,B,C,D,E

4. A,D,E

5. В,С,D

6. Disadvantage of bridge prosthesis –

A) *poor hygiene

B) small size

C) patients easy get used

D) enough durability

E) high functional efficiency

7. Intermediate part (body) of bridge prosthetic appliance is -

A) *artificial teeth

B) clasp

C) attachment

D) crown

E) denture base

8. Name second class of Kennedy’s classification of the partially edentulous arch:

A) *Unilateral distal extension

B) Bilateral distal extension

C) Unilateral tooth supported

D) Anterior edentulous span crossing the midline

E) Defect of dental row with single intact teeth

9. For a good abutment selection, the gingiva should be:

1. *All of the above

2. Sharply pointed at the interdental area

3. Keratinized

4. Tightly bound

5. –

10. The value and direction of loading force upon periodontium of abutment teeth in bridge fabrication is directly depends on:

A) *state of periodontium of antagonist teeth

B) age of patient

C) state of hard tissues of abutment teeth

D) bite

E) character of food lump

11. A technician is making bridge prosthesis with support on 42, 32 teeth. What pontic design of intermediate part is needed in this case?

A) *modified ridge lap

B) saddle

C) hygienic

D) conical

E) on artificial gum

12. A technician is making bridge prosthesis with support on 35, 37 teeth. While waxing the intermediate part he left a space between it and alveolar crest. What is the purpose of space between the body of bridge and alveolar crest mucosa?

A) *for good hygiene of oral cavity

B) to prevent bedsores

C) for good aesthetics

D) to rinse oral cavity

E) for advancement of food lump

13. What from the following is not the contra-indication for fabrication of bridge prosthesis?

1. *How defect is surrounded by teeth

2. Location of defect

3. Size of defect

4. Masticatory efficiency of teeth-antagonists

5. Condition of abutment teeth

14. What design of pontic is the most esthetic and can be easily cleaned by patient?

1. *Ovate

2. Saddle

3. Hygienic

4. Conical

5. Modified ridge lap

15. When a weaker abutment is not splinted to the adjacent stronger tooth in a fixed partial denture, the fixed partial denture will:

1. *Laterally drift

2. Supraerupt

3. Become mobile

4. Get dislodged

5. –

16. Indications for bridge prosthesis fabrication:

1. *III, IV class by Kennedy; II class 1 subclass by Betelman

2. II class by Kennedy

3. II class by Betelman

4. III class by Kennedy

5. II class 2 subclass by Betelman

17. Cantilever fixed partial denture is not indicated as:

1. *All above are true

2. It cannot tolerate forces acting on it

3. Prognosis is poor on long-term

4. It will induce lateral forces on periodontal ligament

5. –

18. Least preferred mode of management of tilted abutment is:

1. *Extraction

2. Orthodontic uprighting

3. Mesial half crown

4. Non-rigid connector

5. –

19. Col is the area of gingiva:

1. Between free marginal gingiva and free gingival groove

2. Consisting of a buccal and lingual component

3. That occupies area between adjacent teeth

4. *Both B and C are true

5. Both A and B are true

20. Prognosis in fixed partial denture depends on:

1. Residual alveolar bone

2. Tooth mobility

3. Occlusion

4. *All of the above

5. –

21. Contraindication for bridge denture is

1. *Long defect, bounded with teeth from different functional groups

2. Loss of 1 frontal tooth or up to 4

3. Frontal defect

4. Loss of canines

5. Loss of 1 or 2 premolars

22. What is bridge with one-side abutment called?

1. *Cantilever

2. Maryland

3. Resin-bonded

4. Linear

5. Polygonal

23. What is bridge which abutment teeth don’t require preparation or require minimal preparation called?

1. *Resin-bonded

2. Cantilever

3. Linear

4. Polygonal

5. Hanging

24. Patient came at dentists with complains about absence of teeth. Examination data: 16, 15, 14, 13 are missing. What denture is indicated for a patient?

1. *Partial removable

2. Removable bridge

3. Fixed bridge

4. Pivot teeth

5. Artificial crowns

25. According to one of the principles of bridge denture design, abutment teeth and pontic should be in one line. What happens if this principle is disturbed?

1. *Development of rotary load

2. Development of horizontal load

3. Pathologic attrition occurs

4. Development of pathological vertical load

5. –