Prothesis fixed

FDP, Removable,
Implants
Jomana Badran
Pages 54-80

4. Occlusal (night) guards are used to
A.
B.
C.
D.

treat bruxism.
reduce pocket formation.
prevent pulpitis.
permit eruption or elongation of teeth.

The occlusal splint has some possible advantages for severe
bruxers. Coverage of all teeth in one arch has the effect
of diminishing the mechanoreceptive response in the
individual
teeth that are covered by the splint. The splint coverage
may also prevent the minute rebound effect from occurring
in teeth that have been intruded. This improvement in
stability may better preserve the perfected relationship that
is accomplished at equilibration.
Page 337 Functional Occlusion

6. A patient with bruxism is likely to demonstrate
A.

radiographic evidence of the widening of
the periodontal ligament.
B.
increased mobility of teeth.
C.
premature wear of occlusal surfaces.
D.
TMJ discomfort.
E.
All of the above.
Fig. 7-1 When the masticatory system is overloaded, a
variety of structures can reveal breakdown leading to
symptoms.
Some of the more common symptoms are
(a) tooth wear, (b) pulpitis, (c) tooth mobility, (d)
masticatory muscle
pain, (e) temporomandibular joint pain, (f) ear pain, and
(g) headache pain.
Page 139
Management of TMJ
disorder

10. A clenching habit may be a factor in
A.
B.
C.
D.

suprabony periodontal pocket formation.
marginal gingivitis.
increased tooth mobility.
generalized recession.

Page 139
Management of TMJ
disorder

3. While the teeth are set in wax, dentures are tried in to
A.
B.
C.
D.All of

verify the maxillomandibular records.
verify the vertical dimension of occlusion.
evaluate esthetics.
the above.

The Try-in Appointment
SECTION I: PERFECTION AND
VERIFICATION OF JAW RELATION
RECORDS which include VERIFYING THE VERTICAL DIMENSION and
VERIFYING CENTRIC RELATION
SECTION II: ECCENTRIC JAW
RELATION RECORDS, ARTICULATOR
AND CAST ADJUSTMENT,
ESTABLISHMENT OF THE POSTERIOR
PALATAL SEAL
SECTION III: CREATING FACIAL AND
FUNCTIONAL HARMONY WITH
Page 329
ANTERIOR TEETH
Prosthodontics treatment of
edentulous patient

1. After cementation of a fixed bridge, the patient should be
advised to
1.
avoid hot liquids.
2.
stimulate the gingival tissue with massage.
3.
use dental floss under the pontic.
4.
return for periodic examination.
5.
avoid sticky foods.
A.(1) (2) (3)
B.(1) (3) (5)
C.(1) (4) (5)
D.(2) (3) (4)
E.(2) (4) (5)
Postinsertion Hygiene
After the fixed partial denture is
cemented, teach the patient appropriate technique(s)
that can be mastered. Motivate the individual to practice
good hygiene around and under the pontic with dental
floss (Fig 26-8), interproximal brushes (Fig 26-9), or pipe
cleaners.
Page 478 Fundamental of fixed prosthodontics

4.A fixed bridge pontic should
1.
restore tooth function.
2.
reduce thermal conductivity.
3.
be biologically acceptable.
4.
reduce galvanic reactions between abutments and other
restorations.
5.
restore aesthetics.
A.

(1) (2) (3) B.

(1) (3) (5) C.

(1) (3) (4) D.

(2) (3) (4)

Pontics designed for placement in the appearance
zone must produce the illusion of
being teeth, esthetically, without compromising clean
ability. Those pontics placed in the nonappearance zone
(usually mandibular posterior replacements) are there to
restore function and prevent the drifting of teeth. Since
esthetics is usually a minor consideration in this area of
the mouth, it may not be necessary to utilize materials or
contours that suggest the presence of a tooth.
Page 479 and 485
Fundamental of fixed
prosthodontics

2. In treatment planning for a fixed bridge, the
necessary clinical data should include
1.
2.
3.
4.

an assessment of any discrepancy between
centric occlusion and centric relation.
the type of impression materials to be used.
an evaluation of the forces of mastication.
the aesthetic considerations.

A.
(1) (2) (3) B. (1) (3) (4) C.
(2) and (4) E. (4) only

(1) and (4) D.

3. In the design of a removable
partial denture, guiding planes are
made

A.
parallel to the long axis of the
tooth. B.
parallel to the path of
insertion.
C.
at a right angle to the
occlusal plane.
D.at a right angle to the major
connector.
All proximal abutment surfaces that
are to serve as
guiding planes for the removable
partial denture
should be prepared so that they will
be made as
nearly parallel as possible to the path
of placement

Page 245 McCracken

4.
Rests on terminal abutment teeth for a
cast metal
removable partial denture provide
A.
B.
C.
D.

primary retention.
indirect retention.
occlusal force transmission.
lateral force transmission

5. For a removable partial denture, a
metal base is preferred to an
acrylic base because metal is
A.
more hygienic.
B.
stronger.
C. less irritating.
D. a better thermal conductor. E.
All of the above.

7. Which of the following should be checked first when
a cast gold crown that fits on its die cannot be
seated on its abutment?
A. The occlusal contacts.
B.
The taper of the preparation.
C.
The proximal contacts.
D. The impression used to pour the cast.

6. The crownçroot ratio is
1.
the comparison of the length of root retained in
bone to the amount of tooth external to it.
2.
an important factor in abutment tooth selection.
3.
determined from radiographs.
4.
determined during surveying of the
diagnostic cast.
A.
D.
E.

(1) (2) (4) B. (1) (2) (3) C.
All of the above.
None of the above.

(1) (3) (4)

This ratio is a measure of the length of tooth occlusal to
the alveolar crest of bone compared with the length of
root embedded in the bone. As the level of the alveolar
bone moves apically, the lever arm of that portion out of
bone increases, and the chance for harmful lateral forces
is increased. The optimum crown-root ratio for a tooth to
be utilized as a fixed partial denture abutment is 2:3. A
ratio of 1 • 1 is the minimum ratio that is acceptable for a
prospective abutment under normal circumstances

Page 91
Fundamental of
fixed
prosthodontics

3. A removable partial denture rest should be placed on the
lingual surface of a canine rather than on the incisal surface
because
A.
less leverage is exerted against the tooth by the rest.
B.
the enamel is thicker on the lingual surface.
visibility and access are better.
C.
the cingulum of the canine provides a
D.natural recess.

A lingual rest is preferable to an incisal rest,
because it is placed nearer the horizontal axis of
rotation (tipping axis) of the abutment and therefore
will have less tendency to tip the tooth. In addition,
lingual rests are more esthetically acceptable than
are incisal rests.

Page 77 McCrccen

7. In an edentulous maxilla, the direction of resorption of the
alveolar ridge is

A.
B.
C.
D.

upward and palatally.
upward and facially.
uniform in all directions.
upward only.

1.A metal in the wrought condition differs from the same metal in
the cast condition in that
A.
B.
C.
D.

the grains are deformed and elongated.
the yield strength and hardness are
increased.
if heated sufficiently, recrystallization can occur.
All of the above.

Having been formed
by being drawn into a wire, the wrought-wire clasp
arm has toughness exceeding that of a cast clasp arm.
The tensile strength of a wrought structure is at least
25% greater than that of the cast alloy from which it
was made. It may therefore be used in smaller diameters
to provide greater flexibility without fatigue and
ultimate fracture.
Page 91 Mccracken

2. Dental porcelain has
1.
2.
3.
4.

low compressive strength.
high hardness.
high tensile strength.
low impact strength.

A.(1) (2) (3)
B.(1) and (3)
C.(2) and (4)
D.(4) only
E. All of the above.

3. After processing, complete dentures on the original
stone casts are rearticulated in order to correct occlusal
disharmony produced by
1.
flasking and processing procedures.
2.
strained jaw relation records.
3.
errors in registering of centric jaw relation.
A.
B.
C.
D.

(1) only
(1) (2) (3)
(2) and (3)
(1) and (3)

7. Which of the following structures affects the
thickness of the flange of a maxillary complete
denture?
A. Malar process.
B.
Coronoid process.
C.
Mylohyoid ridge.
D. Zygomatic process.
E. Genial tubercle.
maxillary buccal flanges should properly fill the
buccal vestibule. However, the distal corners of the
denture base below the borders must be thin to
allow the freedom necessary for movement of the
coronoid process.
Page 424 prosthodontics
treatment of edentules
patient

.

8 The form of the distobuccal border of a mandibular denture is modified by
1.buccinator muscle.
2.masseter.
3.temporal tendon.
4. pterygomandibular raphe.
5. external oblique ridge.

•(1) and (2)
•(2) and (3)
•(3) and (4)
•(1) and (5)
•(4) and (5)
The masseter
muscle, when contracting, can act through the buccinator
muscle and impinge on the buccal sulcus.
This effect usually is much more pronounced in the
mandibular buccal sulcus. The external oblique
line of the mandible defines the lateral boundary of
the buccal shelf and frequently defines the buccal
boundary of the mandibular buccal sulcus
Page 91 prosthodontics
treatment of edentulous
patient

1. Which of the following should be evaluated for surgical
removal before new complete dentures are constructed?
A.Mandibular tori.
B.Epulis fissuratum.
C. Papillary hyperplasia.
D. Sharp, prominent mylohyoid ridges.
E. All of the above.

the torus may be
considered for surgical remova
page 109 prosthodontics treatment
of edentulous patient

Prothesis fixed

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