Theme 10. Seating of cast RPD. Insertion of cast RPD. Mechanism of adaptation. Life-time of cast removable partial dentures.

Q1. Which one of the following is not a basic factor in determining the most advantageous path of insertion?

a. *dexterity of the patient

b. retention

c. interferences

d. esthetics

e. guiding planes

Q2. In the long-term study on the serviceability of RPDs, the patients’ and clinicians’ opinion of acceptability were identical.

T or *F

Q3. All of the following statements are considerations when relining a bilateral distal extension RPD opposing a maxillary complete denture, except

A. *a closed-mouth impression procedure is indicated when relining the bilateral distal extension RPD

B. loss of posterior occlusal contact between the complete denture and removable partial denture may necessitate reestablishment of the original occlusal relationship

C. it is not unusual for a patient to complain of looseness of the maxillary complete denture and request relining of that denture when actually it is the removable partial denture that needs relining

D. evidence of rotation of the distal extension removable partial denture about the fulcrum line must be the deciding factor as to whether relining needs to be done

E. an open-mouth impression procedure is indicated when relining the bilateral distal extension RPD

Q4. If the lingual alveolar bone in the premolar region of the mandible has anything but a steep vertical slope, any rigid metal covering the area during downward function must be

A. *relieved during construction

B. thickened during the wax-up

C. relieved at delivery

D. relieved after delivery

E. slightly in contact

Q5. Your patient has only teeth numbers 20 through 29 remaining. You have tried in the framework and are border molding the extension areas in preparation for an altered cast impression. The distobuccal area is shaped by the?

A. *Internal pterygoid muscle

B. Masseter muscle

C. Buccinator muscle

D. Mylohyoid muscle

Q6.

Q7. Physiologic adjustment of the framework

A. *should be done at the framework try-in appointment.

B. is usually done at delivery of the RPD.

C. is usually done at the records appointment.

D. may be omitted in the presence of strong abutments and good residual ridges.

Q8. Which of the following steps is done LAST?

A. *Framework try-in

B. Rest preparation

C. Centric relation records

D. Altered cast impression

Q9. Cleaning a removable partial denture in sodium hypochlorite may result in

A. *corrosion of the metal of the framework

B. increased periodontal problems

C. increased caries activity

D. 1 and 2 above

Q10. A patient undergoes orthopaedic treatment of bounded edentulous spaces on the upper jaw. He needs fixed full-cast dentures. During his second visit it is required to check whether the internal surface of the metal framework of the future metal-ceramic denture matches the surfaces of the prepared teeth. In what way could this be done?

A *In the oral cavity by means of silicone materials

B Visually by means of models in the articulator

C In the oral cavity by means of tracing paper

D In the oral cavity by means of a wax plate

E In the oral cavity by means of stomatoscopic method

Q11. The first step in relining a distal-extension removable partial denture is to

a. *verify the fit of the framework

b. correct the occlusion

c. border mold the denture base

d. eliminate undercuts in the denture base

e. re-establish the plane of occlusion by using modeling compound in the tissue surface of the denture base.

Q12. Ulcerated soft tissues that resist therapy and are associated with a mandibular RPD are of particular concern if located

a. *in the retromylohyoid area

b. on the crest of the ridge

c. in the buccal vestibule

d. in the anterior portion of the floor of the mouth

Q13. Phases of adaptation according to Kurlandsky:

A. *Irritating, partial slowdown, full slowdown

B. Preliminary adaptation, irritation, full adaptation

C. Full adaptation, irritation, stabilization

D. Stabilization, partial adaptation, full slowdown

E. Irritation, stabilization, preliminary adaptation

Q14. Patient’s teaching how to deal with removable partial dentures starts from:

A. *Seating and insertion

B. Denture relining

C. Wax try-in

D. Fitting framework

E. Examination and treatment plan

Q15. What is the first step if denture base border segment is lost?

A. *Take impression using corrected denture

B. Take impression using fractured denture

C. Take impression using stock tray

D. No need in impression taking

E. Add acrylic resin to the fractured border

Q16. Whistling on “s” sounds indicates:

A. *Crowded maxillary premolars

B. Crowded mandible premolars

C. Crowded mandible molars

D. Crowded maxillary molars

Q17. What can be done if “th” and “t” sounds are indistinct?

A. *Thinning the maxillary or/and mandible prosthesis lingually

B. Thickening the maxillary or/and mandible prosthesis lingually

C. Thinning the maxillary or/and mandible prosthesis buccally

D. Thickening the maxillary or/and mandible prosthesis buccally

Q18. What is the recommended first procedure for RPD relining?

A. *Remove undercuts on the tissue

B. Relieve 1 mm acrylic layer of denture base

C. Make impression

D. Pour impression

E. Process the tissue surface with new acrylic

Q19. Which of the following can be due to underextension of denture borders:

1. Inadequate distribution of masticatory force

2. Food collection

3. Lack stability

4. Interference of the borders with complete seating

5. Ulceration, pain

A. *1,2,3

B. 1,3,4

C. 2,3,5

D. 2,4,5

E. 3,4,5

Q20. What instrument must be used for adjustment of denture base?

A. *Miller

B. Diamond bur

C. Carbide bur

D. Resin stone