RPD REVIEWER (WELLS)

a. The angle of cervical convergence is small

A high survey line that allows placement of the retentive terminus of a clasp arm on the gingival one-third of the abutment tooth indicates that

a. The angle of cervical convergence is small

b. The angle of cervical convergence is large

c. The abutment tooth must be contoured

d. A bar clasp is the clasp design of choice

c. Contacts the abutment tooth simultaneously with the retentive arm

True reciprocation infers that the reciprocal component of a clasp assembly

a. Lies on the middle one-third of the clinical crown

b. Is a lingual blanket rather than a lingual arm

c. Contacts the abutment tooth simultaneously with the retentive arm

d. Contacts the tooth immediately after the retentive arm assumes its passive position on the retentive area.

b. Guiding of the prosthesis along planned path of insertion

Which of the following is not a function of occlusal rests?

a. Maintenance of the correct occlusal relation of the artificial teeth

b. Guiding of the prosthesis along planned path of insertion

c. Stabilizing of the clasp arms in their planned position

d. Resistance to cervical movement of prosthesis

d. Kennedy Class IV

Aesthetics is an important consideration when deciding between a fixed or a removable partial denture for which of the following Kennedy classifications?

a. Kennedy Class I

b. Kennedy Class II

c. Kennedy Class III

d. Kennedy Class IV

c. Proper depth of the rest seat may require an amalgam or direct filling gold restoration.

All of the following statements related to the RPI clasp assembly are false except one. Which one?

a. The rest may be placed on the distal aspect of the occlusal surface.

b. A boxlike rest seat is desirable to promote stability of the prosthesis.

c. Proper depth of the rest seat may require an amalgam or direct filling gold restoration.

d. Contact between the mesial minor connector and the adjacent tooth is desirable.

f. 2 and 3

Which of the following is (are) not a valid criterion of incisal rest seat design?

a. The deepest portion (mesiodistally) is toward the center of the tooth.

b. Sharp line angles are desirable.

c. Contact area is involved in the preparation.

d. Small bevels are placed labially and lingually.

e. 1 and 4

f. 2 and 3

b. Provide relative parallelism among proximal tooth surfaces

When surveying a diagnostic cast, the selection of a suitable anteroposterior tilt is to

a. Indicate the greatest available support for the removable partial denture

b. Provide relative parallelism among proximal tooth surfaces

c. Provide suitable reciprocation for retentive clasp arms

d. Eliminate soft tissue undercuts in the retromylohyoid areas

e. 1,3 and 4

Which of the following statements regarding the design of minor connectors is (are) true?

a. The minor connector must be rigid.

b. The minor connector must engage an undercut low on the tooth.

c. The minor connector should present minimal interference to the tongue.

d. The minor connector should cover the minimum of gingival tissue possible.

e. 1,3 and 4

f. All of the above

3. A,b, and c

Which of the following is an (are) indication(s) for recontouring natural tooth structure in preparation for a removable denture?

a. Need to create rest seats

b. Need to prepare guiding planes

c. Need to lower a survey line

d. Need to raise a survey line

1. A and b

2. A, b, and d

3. A,b, and c

4. C

5. All of the above

d. Splinted to a canine with a fixed prosthesis

As part of the preliminary oral rehabilitative phase of removable partial denture therapy, an isolated mandibular second premolar should ideally be

a. Extracted

b. Used for support only

c. Used as a primary abutment

d. Splinted to a canine with a fixed prosthesis

a. As a prophylactic measure where a low caries index is present

All of the following are indications for restoring abutment teeth with the exception of

a. As a prophylactic measure where a low caries index is present

b. When the abutment tooth is nonvital

c. When the abutment tooth has undergone significant extrusion

d. When survey analysis reveals that crown form must be significantly altered to allow proper clasp assembly design

e. 1 and 4

c. Endodontic therapy and coping placement

Which of the following treatment approaches should be considered for a severely extruded abutment tooth, the loss of which would create a distal extension area?

a. Extraction

b. Occlusal recontouring

c. Endodontic therapy and coping placement

d. Cast retoration

e. All of the above

The altered cast technique can be used to obtain

a. A functional impression of the edentulous ridge area

b. An anatomic impression of the edentulous ridge area

c. A functional impression of selected supporting areas and an anatomic impression of nonsupporting areas

d. 1 and 2

e. All of the above

b. B, d, c, a, e

Identify the proper sequence of a procedures to arrive at an altred for a distal extension removable partial denture.

1. Fitting of framework (intraoral)

2. Removable of distal extension portion of final casts

3. Making altered cast impression

4. Final impression for framework construction

5. Construction of impression trays on framework

a. A,b,c, d, e

b. B, d, c, a, e

c. D, b, c, a, e

b. Kennedy Class III, Modification 1

Which of the following maxillary partially edentulous arches does not generally require record bases and occlusion rims (or framework) for an accurate face-bow record?

a. Kennedy Class I, Modification 1

b. Kennedy Class III, Modification 1

c. Kennedy Class III

d. Kennedy Class II, Modification 2

a. Centric occlusion coincident with the centric relation

The horizontal mandibular position recorded for a maxillary complete denture opposing a Kennedy Class III, Modification 1 removable partial denture should provide

a. Centric occlusion coincident with the centric relation

b. Maximum intercuspation anterior to centric relation

c. 1 and 2

d. 1 or 2

c. Opposing framework

Maxillary and mandibular removable partial denture frameworks have been independently adjusted for occlusion to allow natural tooth contacts. With both frameworks have been independently adjusted for occlusion to allow natural tooth contacts. With both frameworks seated it is noted that the natural teeth are in slight hyperocclusion. The premature contact exists between.

a. The mandibular framework and the natural maxillary teeth

b. The maxillary framework and the natural mandibular teeth

c. Opposing framework

d. Any of the above; all are possible

b. Maxillary artificial posteriors and mandibular artificial posteriors

In order to achieve a maximum intercuspation in centric occlusion when setting a posterior artificial teeth for a removable partial denture, the artificial teeth are first set in hyperocclusion and then equilibrated back to the original vertical dimension of occlusion. This procedure must be accomplished for all the following situations with the exception of setting.

a. Maxillary artificial posteriors against mandibular natural posteriors

b. Maxillary artificial posteriors and mandibular artificial posteriors

c. Mandibular artificial posteriors against a maxillary posterior fixed prosthesis.

b. Centric occlusion contacts only

A distal extension removable partial denture with natural anterior teeth that are capable of anterior guidance requires the posterior artificial teeth to provide

a. Centric occlusion and working contacts

b. Centric occlusion contacts only

c. Balancing and working contacts

d. Centric occlusion, working contacts, and balancing contacts

The occlusal requirements of a mandibular bilateral distal extension removable partial denture against a maxillary complete denture are

a. Centric occlusion

b. Centric occlusion and working contacts

c. Centric occlusion and balancing contacts

d. Centric occlusion, working contacts, and balancing contacts

e. Balancing and working contacts

c. Both of the above

The final path of insertion may affect aesthetics by permitting

a. The most suitable size and shape of anterior tooth replacement

b. Less clasp metal to be displayed

c. Both of the above

d. Neither of the above

d. A and c

Aesthetic considerations related to the selection of posterior artificial teeth and waxing of the denture base include

a. Maintenance of artificial tooth height (gingivoocclusal)

b. Placement of gingival papillae above contact area

c. Harmony of artificial tooth size with adjacent natural teeth size

d. A and c

e. All of the above

e. C,d,b, and a

If careless handling of the prosthesis has distorted the major connector, the steps taken in the corrective procedure are to

a. Reestablish the taper of the clasp arm

b. Accomplish a functional reline

c. Remake the prosthesis

d. Remount and equilibrate the prosthesis

e. C,d,b, and a

d. Gold alloy for the clasps, chromium alloy for the framework and connectors

Theoretically the best combination for a partial denture framework is

a. Chromium alloy for the clasps, gold alloy

b. Gold alloy for the clasps and connectors, chromium alloy for the framework

c. Chromium alloy for the clasps and connectors, gold alloy for the framework

d. Gold alloy for the clasps, chromium alloy for the framework and connectors

e. None of the above

c. Metal exhibits greater accuracy

Which of the following is (are) considered to be (an) advantage (s) of metal denture bases compared to acrylic resin denture bases?

a. Metal acts as thermal insulator

b. Metal is easily relined or rebased

c. Metal exhibits greater accuracy

d. Metal is more aesthetic

e. A and c

b. 1 and 4

Acrylic resin artificial teeth rather than porcelain artificial teeth are generally used as posterior tooth replacements in a removable partial denture because

1. Acrylic resin teeth are easily adjusted to accommodate the retentive meshwork and the minor connectors

2. Acrylic resin teeth maintain the vertical dimension of occlusion over a longer period of time

3. The occlusal surfaces of acrylic resin teeth need no modification to occlude against natural teeth.

4. Acrylic resin teeth are potentially less destructive when opposed by natural teeth or gold restorations.

a. 1,3 and 4

b. 1 and 4

c. 2 and 3

d. All of the above