RPD REVIEWER (RUDMAN I & II)

b. Altering tooth contours as indicated by using a surveyor

Failure of partial dentures due ti poor clasp design can best be avoided by

a. Clasping only those teeth with fairly long crowns and normal bone support

b. Altering tooth contours as indicated by using a surveyor

c. Providing bracing arms

d. Employing bar-type claps

e. Employing stress breakers

e. Reaction within the periodontal ligament

The lifting of mandibular partial denture with distal extension bases may be corrected by

a. Narrowing the teeth

b. Correcting occlusion

c. Tightening the bracing arms

d. Change in trabecular pattern

e. Reaction within the periodontal ligament

d. Withstand forces of mastication and to increase the effectiveness of the border seal

Why should the greatest possible bearing area for a mandibular denture be used? To

a. Increase tongue space and to improve retention

b. Provide balanced occlusion and to increase tongue space

c. Improve esthetics and to aid in orienting the plane of occlusion

d. Withstand forces of mastication and to increase the effectiveness of the border seal

e. All of the above

c. I AND IV

Absence of favorable contours for clasp design on an abutment tooth, can be overcome by

1. Recontouring the enamel

2. Changing the path of insertion used for surveying

3. Gingivectomy

4. Constructing a crown

a. I, II, AND IIII

b. I, III, AND IV

c. I AND IV

d. II AND IV

e. All of the above

d. All of the above

Normal speech usually returns to a prosthetic patient within a few days after dentures are inserted. Problems that do occur may result from

a. Improper tooth placement

b. Contour of the denture bases

c. Excessive bulk

d. All of the above

d. Midway between the incisal edge and the gingival margin

On anterior teeth, the most favorable area of placing a continuous bar which is being used as an indirect retainer is

a. On the cingulum

b. Close to the incisal edge

c. Close to the gingival margin

d. Midway between the incisal edge and the gingival margin

e. None of the above

d. Abutment morphology can be controlled

A dentist may advocate a complete crowns on the partial denture abutments. The best reason for this treatment s that

a. The caries problem is eliminated

b. Periodontal problems can be controlled

c. More adequate ocllusion can be achieved

d. Abutment morphology can be controlled

e. None of the above

d. None of the above

Why should the embrasure on the lingual between the maxillary lateral incisor and the maxillary canine be enlarged during mouth preparation for a maxillary partial denture? To

a. Prevent the partial denture from slipping distally

b. Prevent the partial denture from slipping mesially

c. Provide adequate space for a reciprocating arm

d. None of the above

b. Having an insufficient intake of ascorbic acid

During examination of an edentulous patient wearing old dentures, the tissues under the denture base appear unusually hyperemic with small petechial hemorrhages present. This condition most likely results from the patient's

a. Clenching his teeth

b. Having an insufficient intake of ascorbic acid

c. Eating and drinking foods that are too hot

d. Using a mouthwash to which he is sensitive

e. None of the above

b. Teeth are present on both ends of the edentulous areas

A precision attachment removable partial denture is preferred when

a. Abutment teeth are well supported

b. Teeth are present on both ends of the edentulous areas

c. The patient is able to pay for the service

d. No posterior abutment teeth are present

d. Choice of a partial denture alloy

Which of the following considerations is least important in fabricating a removable partial denture?

a. Esthetics

b. Mouth preparation

c. Stress distribution

d. Choice of a partial denture alloy

e. None of the above

Exposure of partial denture cast to tap water should be minimized because

a. The cast will be weakened

b. Eroding of the cast will result

c. Dimensional changes will occur in the cast

d. The surface of the cast will acquire a chalky appearance

e. None of the above

c. At the right angles to the long axis of tooth

For the forces from a removable partial denture to be properly directed through an abutment tooth, the seat for an occlusal rest should be prepared so that its floor is

a. Parallel to the plane of occlusion

b. At the right angles to the minor connector

c. At the right angles to the long axis of tooth

d. Sloping apically from the center of the occlusal surface

e. None of the above

d. Produce a positive contact against the tissue

Major connectors of a maxillary partial denture may be beaded in order to

a. Produce a stronger framework

b. Aid in retention of the denture

c. Retain the acrylic to the metal framework

d. Produce a positive contact against the tissue

e. Form a finish line between metal and acrylic

b. 1, 3 and 4

Which of the following most influence cast positioning in surveying for removable partial denture deigning?

1. Location of undercuts for retention

2. Number of missing teeth

3. Esthetic requirements

4. Ease of insertion and removal

5. Relation to the opposing cast

a. 1, 2 and 4

b. 1, 3 and 4

c. 1 and 4

d. 2 and 4

e. 3 and 5

f. All of the above

c. Reaction of the bone to previously induced stresses

Radiographs are an aid to determining prognosis because the reaction of the bone that supports the abutment teeth can be judged by the

a. Shape of the roots of the abutment teeth

b. Amount of the bone loss due to extractions

c. Reaction of the bone to previously induced stresses

d. All of the above

e. None of the above

d. Limited to the areas of soft displaceable tissue

The scoring of the palatal bar on the cast is

a. Necessary to give the major connector the required rigidity

b. Carried across the entire length of the posterior palatal bars

c. Carried across the entire length of the anterior palatal bars

d. Limited to the areas of soft displaceable tissue

e. None of the above

b. Mental foramen

A denture patient who complained a tingling sensation in the lower lip would most likely need to have the mandibular denture relieved in the area of the

a. Labial frenum

b. Mental foramen

c. Sublingual gland

d. Centric foramen

e. None of the above

d. Changes in supporting tissues may have occurred

Patients wearing partial dentures should return for periodic examinations primarily because

a. Adjustment of retainer arms may be necessary

b. Caries may be present under the retainer arms

c. Oxidized metal surfaces may need polishing

d. Changes in supporting tissues may have occurred

e. None of the above

a. Rigid reciprocal arm and the body of the clasp

Bracing of the partial denture framework is best accomplished by the

a. Rigid reciprocal arm and the body of the clasp

b. Rigid reciprocal arm and the flexible part of the retentive arm of the clasp

c. Rigid reciprocal arm of the clasp

d. Retentive arm and the occlusal rest

e. None of the above

b. Edentulous areas are long

A removable partial denture is preferably to a fixed bridge when

a. Edentulous areas are numerous

b. Edentulous areas are long

c. Abutment teeth are short

d. Abutments are rotated

e. Abutment teeth are tipped

a. Remounting the dentures on the articulator using previous mounting

After partial dentures are processed and before removing them from the master casts, possible errors in occlusion should be checked by

a. Remounting the dentures on the articulator using previous mounting

b. Remounting the dentures on an articulator after registering a new centric relation record in the patient's mouth

c. Having the patient use an abrasive past in the mouth

d. Checking the cuspal interference in the mouth using articulating paper

e. Either c or d above

d. 3 only

Redness and soreness, limited to the crest of the edentulous ridge supporting a removable partial denture, are indicative of a

1. Lateral prematurity during the working movement

2. Lateral prematurity during the nonworking movement

3. Centric prematurity

a. 1 only

b. 2 only

c. 2 and 3

d. 3 only

e. All of the above

f. None of the above

c. 2 only

Two days after insertion of a distal extension saddle partial denture, which appeared stable at the time of insertion, the prosthesis displays obvious tissueward movement.

The cause may be:

1. An inaccurate master cast impression

2. High occlusion requiring correction

3. Changes occurring in the ridge form since the master cast impression was made

a. 1 only

b. 1 and 2

c. 2 only

d. 2 and 3

e. All of the above

f. None of the above

b. 1,2,3,5

Properly mounted diagnostic casts facilitate planning for

1. Abutment preparation design to assure retentive preparations

2. Axial alignment of abutment preparations and sequence of treatment procedures

3. Aesthetic considerations and selection of pontic type

4. Adequate crown-root ratios

5. Correction of existing occlusal disharmonies

6. Appraisal of tissue contour in pontic areas and presence of periodontal pockets

a. 1,2,3,4

b. 1,2,3,5

c. 1,2,3,6

d. 1, 2, 4, 6

e. 2, 3

f. 2, 3, 4, 6

g. 2, 4

h. 2, 4, 5, 6

b. Short span bridges replacing one missing tooth where the prepared abutment teeth are not in parallel alignment

The nonrigid connector may be used in fixed bridges in those cases involving:

a. Long span bridges replacing two or more teeth

b. Short span bridges replacing one missing tooth where the prepared abutment teeth are not in parallel alignment

c. Long span bridges opposing a mucosa-borne partial denture where the anterior retainer of the bridge strikes an opposing natural tooth, but the distal portion of the bridge is in occlusion with the removable partial denture

d. Long or short span bridges where one of the abutment teeth has limited periodontal support

d. Because of its ability to flex in all directions

The cast-wrought combination clasp is DESIRABLE

a. Because it cannot be re-adapated

b. Only when used with extension base partial dentures

c. Because it offers no stress-breaking action

d. Because of its ability to flex in all directions

e. None of the above

c. Resilient and nonresilient tissues are involved

A two-stage impression technique may be considered for partial denture construction primarily because

a. It provides a more accurate impression of the abutment teeth

b. It provides a more detailed impression of the soft tissue

c. Resilient and nonresilient tissues are involved

d. It enables the dentist to border mold

e. Both b and d above

f. None of the above

d. 2 and 3

Seventy-two hours after inserting a relined distal extension partial prosthesis, vertical movement of the base is noted.

Causes would likely be:

a. Ridge tissue changes occurring since the reline impression

b. Failure to properly orient the metal framework to the contacted teeth during reline impression procedures

c. Premature occlusal contacts

a. 1 only

b. 1 and 2

c. 1 and 3

d. 2 and 3

e. 3 only

f. All of the above

c. For final correction of any existing occlusal disharmony in dentures

Selective grinding is a procedure used routinely

a. To reduce the vertical dimension of occlusion

b. To reduce the inclination of condylar guidance

c. For final correction of any existing occlusal disharmony in dentures

d. To improves the esthetics of the final arrangement of the anterior teeth

d. Attached to the finished partial denture frame and record the relationship with zinc oxide-eugenol registration paste.

The most reliable method of recording centric occlusion when constructing a mandibular bilateral distal extension partial denture occluding with natural teeth is to construct a stabilized occlusion rim

a. For the mandibular master cast and record the relationship with baseplate wax

b. For the mandibular master cast and record the relationship with utility wax

c. For the mandibular master cast and record the relationship with zinc oxide-eugenol registration paste

d. Attached to the finished partial denture frame and record the relationship with zinc oxide-eugenol registration paste.

a. Can be adequately rigid with less apparent bulk

And advantage of a wide, thin palatal bar as compared with a narrow bar is that the wide bar

a. Can be adequately rigid with less apparent bulk

b. Is easier to polish

c. Is more stable

d. Is less irritating to the soft tissue

a. On the gingival third of the crown

Abutment teeth for removable partial dentures should be contoured so that the retentive clasp tips can be placed

a. On the gingival third of the crown

b. On the middle third of the crown

c. In the distal undercut

d. None of the above

d. Resin teeth are chemically bonded to the base and porcelain and porcelain teeth are mechanically held to the base

Both porcelain and acrylic resin teeth are used in prostheses. Both are secured to the base during processing. The correct anchorage is:

a. Both are chemically united with the resin base

b. Both are held to the base in a mechanical bond.

c. The anchorage of both kinds of teeth Is both chemical and mechanical

d. Resin teeth are chemically bonded to the base and porcelain and porcelain teeth are mechanically held to the base

e. Resin teeth are mechanically held to the base and porcelain teeth are chemically bonded to the base.

a. Passivity

A base-metal partial denture alloy is resistant to tarnish and corrosion because of its

a. Passivity

b. High hardness

c. High fusion temperature

d. High noble metal content

e. Activity

b. Higher modulus of elasticity

For a more rigid structure, a base-metal partial denture alloy should be selected rather than a Type IV gold because the alloy has a

a. Lower elongation

b. Higher modulus of elasticity

c. More favorable tensile strength

d. Higher hardness number

e. Higher ductility

d. 2 and 4

The posterior palatal seal for a maxillary denture

1. Is placed immediately posterior to the vibrating line

2. Helps to compensate for the lack of adaptation caused by shrinkage of acrylic

3. Is not necessary if a metal base is made

4. Will vary in outline and depth according to the palatal form encountered

a. 1 and 2

b. 1 and 3

c. 2 and 3

d. 2 and 4

e. 3 and 4

c. 1, 2, 3

in partial denture construction, a dental surveyor should be used

1. To determine the path of insertion

2. To determine design

3. In conjunction with mouth preparations

4. To determine the depth of rest seats

a. 1 only

b. 1 and 2

c. 1, 2, 3

d. 2 and 4

e. All of the above

e. All of the above

1. To be acceptable for repair, an existing removable partial denture should have a (n)

1. Acceptable fit of the metal to the teeth

2. Rigid major connector properly located with relation to teeth and tissues

3. Acceptable design

4. Framework that can be positioned positively and predictably without the missing part

a. 1, 2, 3

b. 1, 2, 4

c. 1,3,4

d. 2,3,4

e. All of the above

e. All of the above

Altering crown form to allow effective clasping may include

1. Producing flat planes

2. Changing the location of the height of contour

3. Adding bulk to the tooth

a. 1 and 2

b. 1 and 3

c. 2 and 3

d. 3 only

e. All of the above

c. 2 and 4

1. The reciprocal arm of a circumferential clasp should always

1. Contact a guiding plane near its tip

2. Contact a guiding plane near its attachment to the minor connector

3. Contact a guiding plane approximately 180 degrees around the tooth from its tip

4. Be rigid

5. Be flexible

a. 1 and 4

b. 1 and 5

c. 2 and 4

d. 2 and 5

e. 3 and 4

c. 2 and 4

A patient of removable partial denture is dissatisfied with the false appearance of the mandibular anterior teeth. The dentist could correct this appearance by

1. Moving the teeth farther lingually so that they are not so obvious

2. Varying the inclinations of the incisors so that alternate teeth appear tilted

3. Moving the teeth farther facially so that their appearance is enhanced

4. Separating the teeth slightly to make each one look distinct

a. 1 and 3

b. 2 and 3

c. 2 and 4

d. 3 only

e. Any of the above

e. 2 and 3

1. Increased bulk in the major connector is necessary if the

1. Major connector is shorter than usual

2. Major connector is longer than usual

3. Framework is to be made of gold rather than cobalt-chromium

4. Framework is to be made of cobalt-chromium rather than gold

a. 1 only

b. 1 and 3

c. 1 and 4

d. 2 only

e. 2 and 3

b. 1, 2, 4

Mounted diagnostic casts in removable partial denture treatment planning are essential for selecting the

1. Type of denture base

2. Areas for support

3. Areas for retention

4. Type of supplied teeth

5. Major connector

a. 1, 2 3

b. 1, 2, 4

c. 1, 3

d. 2, 4

e. 2, 4, 5

c. 2,3, and 4

1. Oral examination of an edentulous patient should include digital palpation as well as visual examination because

1. The arch form is more accurately evaluated

2. The thickness of the mucosa can better be evaluated

3. Undercut areas may be better evaluated

4. The ridge relationship may be better evaluated

a. 1, 2, 3

b. 1, 3 and 4

c. 2,3, and 4

d. 4 and 5

e. All of the above

d. Orthodontically reposition the remaining maxillary central incisor and place a fixed partial denture.

A 25 years old patient presents with one missing maxillary central incisor, and a history of having worn a flipper-type removable appliance for ten years. Therefore no other missing teeth. A Class I interarch relationship exists. Which of the following is indicated to achieve optimum esthetics and function?

a. Extract the malposed central incisor and place a removable appliance

b. Extract the malposed central incisor and place a fixed partial denture

c. Reduce the facial of the remaining central incisor maximally and place a fixed partial denture

d. Orthodontically reposition the remaining maxillary central incisor and place a fixed partial denture.

e. None of the above.

a. Mylohyoid

For mandibular denture impression, action of which the following muscles determines the form of the lingual flange in the molar region?

a. Mylohyoid

b. Geniohyoid

c. Medial pterygoid

d. Lateral pterygoid

e. Superior pharyngeal constrictor

b. The lingual flange of the partial denture is overextended

The probable cause of a sore throat following insertion of a removable mandibular partial denture is that

a. The lingual bar is impinging upon the lingual frenum

b. The lingual flange of the partial denture is overextended

c. Insufficient relief has been provided for the lingual bar

d. The distofacial flange is overextended

e. None of the above

b. Base

The part of distal-extension removable partial denture which provides the greatest resistance to movement and torquing of the abutment teeth is the

a. Rest

b. Base

c. Guiding plane

d. Retentive clasp

e. Minor connector

e. All of the above

Grinding the incisal edges of mandibular anterior teeth to correct protrusive interferences alters the guidance or the contact in

a. Working movement

b. Balancing movement

c. Protrusive movement

d. Centric occlusion

e. All of the above

a. Registering the tissue in its passive position

The best impression technique for recording loose maxillary anterior hyperplastic tissue in an edentulous patient involves

a. Registering the tissue in its passive position

b. Using high-fusing modeling compound

c. Closed-mouth technique

d. Maximum pressure

e. Registering the tissue in its active position

e. Excessive trauma to the underlying supporting tissues

Excessive vertical dimension may result in

a. A loss of muscle tone

b. Poor denture retention

c. A dropping of the corners of the mouth

d. Creases and wrinkles in the region of the mouth

e. Excessive trauma to the underlying supporting tissues

c. For resilient and nonresilient tissues involved

A two-stage impression technique may be used for partial denture construction primarily because it allows

a. For a more accurate impression of the abutment teeth

b. For a more detailed impression of the soft tissue

c. For resilient and nonresilient tissues involved

d. The dentist to border mold

e. None of the above

a. Remounting the dentures on an articulator using the previous mounting

After partial dentures are processed and before removing them from the master casts, possible errors in occlusion should be checked by

a. Remounting the dentures on an articulator using the previous mounting

b. Remounting the dentures on an articulator after registering a new centric relation

c. Having the patient use an abrasive paste in his mouth

d. Checking cuspal interference in the mouth using articulating paper

e. Either C or D

e. Maintaining a stable base-tissue relationship

The most effective means of limiting applied loads to abutment teeth in a distal-extension partial denture is by

a. Using a stressbreaker

b. Using acrylic replacement teeth

c. Splinting abutments to adjacent teeth

d. Using the abutment teeth without splinting

e. Maintaining a stable base-tissue relationship

a. Serve to guide the mandible during eccentric movements and transmit periodontal proprioceptive impulses to the muscles of mastication.

Some dentists use canine guidance as the key to establishing functional occlusion in partial dentures on the theory that canine teeth

a. Serve to guide the mandible during eccentric movements and transmit periodontal proprioceptive impulses to the muscles of mastication.

b. Guide the mandible from eccentric movements and, thus, serve as the best single guide to true centric relation

c. Prevent trauma to other natural teeth without resorting to extensive equilibration

d. Can be equilibrated easily and are the least subject to pulpal injury

e. None of the above

c. Deflective occlusal contacts

A patient complains of looseness with a new removable denture.

This is probably due to

a. Insufficient facial overlap on posterior teeth

b. Passive clasp pressure on abutment teeth

c. Deflective occlusal contacts

d. Thin flanges on acrylic bases

e. Any of the above

b. Excessive vertical opening

In denture construction, the patient is likely to experience the most discomfort from

a. Non-anatomic teeth

b. Excessive vertical opening

c. A slight error in centric occlusion

d. Having the vertical dimension closed more than normal

e. Having the vertical dimension closed less than normal

b. Occluding vertical dimension that results in an excessive interocclusal distance when the mandible is in rest position

Decreased vertical dimension of occlusion refers to a (n)

a. Vertical dimension that leaves the teeth in a clenched, closed relation in normal position

b. Occluding vertical dimension that results in an excessive interocclusal distance when the mandible is in rest position

c. Insufficient amount of interarch distance because of heavy, bony ridges

d. Condition in which the patient cannot open the mandible because of temporomandibular joint pathosis

e. None of the above

e. Reaction within the periodontal ligament

A tooth which has not been in function and is now being used as an abutment may become symptomatic. This is most likely results from

a. Overstress

b. Pulpal reaction

c. Localized osteoclastic activity

d. Change in trabecular pattern

e. Reaction within the periodontal ligament

b. Which Is anterior to the junction of the movable and immovable soft palate

The posterior palatal bar should be placed in a relationship

a. To incorporate the hamular notch on each side

b. Which Is anterior to the junction of the movable and immovable soft palate

c. Which is posterior to the junction of the movable and immovable soft palate

d. Extending from one hamular notch to the other hamular notch across the fovea palatinae

e. None of the above

b. Mandibular; complete denture

A balanced occlusion can most frequently be established with a ____ partial denture against a _______.

a. Mandibular; natural dentition

b. Mandibular; complete denture

c. Maxillary; natural dentition

d. Maxillary; complete denture

e. None of the above