Prosthodontics Practice Exam Questions and Answers
2023 with complete solution
B. Overextended labial flange borders
will cause the denture to dislodge when peri-oral muscle activity ensues. This is why
accurate border molding is so critical to proper denture construction. In addition, it is
common to see vesibular ulceration secondary to the overextension. And finally, the
additional material may convey a sense of fullness. Properly located, but excessively
thick, flanges may also mimic this symptom, but usually without the
soreness/displacement issues. Zarb, et al., 12th ed., p 420 - 421
(2010)Which of the following is the primary cause of patient complaints of fullness,
soreness and lack of retention in a maxillary complete denture?
a. Flange borders that are too thick
b. Overextended labial flange borders
c. A deep labial notch
d. Overextended posterior border
D. Lack of Horizontal overlap in the posterior teeth
Small lesions on the Buccal mucosa of the cheek in line with the occlusal plane indicate
that the patient is biting the cheek during mastication. This problem usually can be
corrected by reducing the buccal surface of the offending mandibular tooth to create
additional horizontal overlap, thus providing an escape for the Buccal mucosa. Zarb et
al., 12th ed., p 420
(2010)Which of the following MOST COMMONLY causes cheek biting in denture
patients?
a. Using 0 degree teeth
b. Using 30 degree teeth
c. Lack of vertical overlap in the posterior teeth
d. Lack of horizontal overlap in the posterior teeth
C. The first statement is TRUE, the second statement is FALSE
It is unwise to provide a FPD when the root surface area of the abutment was less than
the root surface area of the teeth being replaced. If the first molar and both premolars
are missing; however, the FPD is not considered a good risk because the missing teeth
have a greater total root surface area than the potential abutments. Rosenstiel et al.,
3rd ed., p 69 - 71
(2010)Construction of a fixed partial denture, replacing the maxillary first molar (#3) and
both premolars (#4 and 5) using only the canine (#6) and second molar (#2) as
abutments violates Ante's law. Still, it should be considered as a treatment option.
a. Both statements are TRUE
b. Both statements are FALSE
c. The first statement is TRUE; the second is FALSE
d. The first statement is FALSE the second is TRUE
, B. Provide space for an adequate thickness of restorative material in an area of heavy
occlusal contact
An integral part of the occlusal reduction is the functional cusp bevel. A wide bevel on
the lingual inclines of the maxillary lingual cusps and the Buccal inclines of mandibular
Buccal cusps provides space for an adequate bulk of metal in an area of heavy occlusal
contact. Shillingburg, et al., 3rd ed., p 127
(2010)Preparation of the functional cusp is an integral part of the occlusal reduction
phase for either a full- or partial-veneer restoration. The purpose of "beveling" the cusp
is to:
a. Relieve the functional cusp from additional stresses when the restoration is loaded in
the long axis of the tooth
b. Provide space for an adequate thickness of restorative material in an area of heavy
occlusal contact
c. Enhance resistance form when Buccal to lingual forces are applied to the casting
d. Serve as a positive stop when the casting is seated during cementation
a. Distal side of the retainer on the middle abutment (pier abutment)
A 5-unit FPD replacing the maxillary 1st molar and 1st premolar, the middle abutment
can act as a fulcrum during function, with possible unseating of one of the other
abutments. One approach is a nonrigid dovetail connector between the molar pontic
and the second premolar. Rosenstiel, et al., 3rd ed., p 69-70
(2010)When placing a 5-unite FPD where the maxillary first premolar and first molar are
missing, leaving the second premolar as a pier abutment, and the cuspid and second
molar as abutments, a non-rigid key/keyway connector would be best placed on the:
a. Distal side of the retainer on the middle abutment (pier abutment)
b. Mesial side of the middle abutment
c. Mesial of the second molar
d. Distal of the cuspid
d. Make proximal boxes or Buccal and lingual grooves
Reduction of tooth structure is sometimes inevitable but never desirable. Minimizing the
taper is ideal but often difficult to accomplish attempting to parallel abutments.
Excessive preparation length will often violate biologic width and result in periodontal
issues. Undercuts on a fixed prosthesis will often preclude proper seating. Boxes and
grooves, if kept parallel, will enhance resistance form by providing additional vertical
planes and will aid in retention due to increased surface area. Shillingburg, et al., 3rd
ed., p 119 - 124
(2010)A patient selects the option of a 5-unit ceramometal fixed bridge in order to
replace a molar and a premolar. She also prefers a PFM for a tooth that requires full
coverage. How should the
preparations or the long span bridge abutments differ from that of the single crown in
order to increase retention?
a. Minimize the taper of the preparations
b. Lengthen the preparations to the level of the epithelial attachment
c. Incorporate an undercut on the mesial of the second molar or on the distal of the first
2023 with complete solution
B. Overextended labial flange borders
will cause the denture to dislodge when peri-oral muscle activity ensues. This is why
accurate border molding is so critical to proper denture construction. In addition, it is
common to see vesibular ulceration secondary to the overextension. And finally, the
additional material may convey a sense of fullness. Properly located, but excessively
thick, flanges may also mimic this symptom, but usually without the
soreness/displacement issues. Zarb, et al., 12th ed., p 420 - 421
(2010)Which of the following is the primary cause of patient complaints of fullness,
soreness and lack of retention in a maxillary complete denture?
a. Flange borders that are too thick
b. Overextended labial flange borders
c. A deep labial notch
d. Overextended posterior border
D. Lack of Horizontal overlap in the posterior teeth
Small lesions on the Buccal mucosa of the cheek in line with the occlusal plane indicate
that the patient is biting the cheek during mastication. This problem usually can be
corrected by reducing the buccal surface of the offending mandibular tooth to create
additional horizontal overlap, thus providing an escape for the Buccal mucosa. Zarb et
al., 12th ed., p 420
(2010)Which of the following MOST COMMONLY causes cheek biting in denture
patients?
a. Using 0 degree teeth
b. Using 30 degree teeth
c. Lack of vertical overlap in the posterior teeth
d. Lack of horizontal overlap in the posterior teeth
C. The first statement is TRUE, the second statement is FALSE
It is unwise to provide a FPD when the root surface area of the abutment was less than
the root surface area of the teeth being replaced. If the first molar and both premolars
are missing; however, the FPD is not considered a good risk because the missing teeth
have a greater total root surface area than the potential abutments. Rosenstiel et al.,
3rd ed., p 69 - 71
(2010)Construction of a fixed partial denture, replacing the maxillary first molar (#3) and
both premolars (#4 and 5) using only the canine (#6) and second molar (#2) as
abutments violates Ante's law. Still, it should be considered as a treatment option.
a. Both statements are TRUE
b. Both statements are FALSE
c. The first statement is TRUE; the second is FALSE
d. The first statement is FALSE the second is TRUE
, B. Provide space for an adequate thickness of restorative material in an area of heavy
occlusal contact
An integral part of the occlusal reduction is the functional cusp bevel. A wide bevel on
the lingual inclines of the maxillary lingual cusps and the Buccal inclines of mandibular
Buccal cusps provides space for an adequate bulk of metal in an area of heavy occlusal
contact. Shillingburg, et al., 3rd ed., p 127
(2010)Preparation of the functional cusp is an integral part of the occlusal reduction
phase for either a full- or partial-veneer restoration. The purpose of "beveling" the cusp
is to:
a. Relieve the functional cusp from additional stresses when the restoration is loaded in
the long axis of the tooth
b. Provide space for an adequate thickness of restorative material in an area of heavy
occlusal contact
c. Enhance resistance form when Buccal to lingual forces are applied to the casting
d. Serve as a positive stop when the casting is seated during cementation
a. Distal side of the retainer on the middle abutment (pier abutment)
A 5-unit FPD replacing the maxillary 1st molar and 1st premolar, the middle abutment
can act as a fulcrum during function, with possible unseating of one of the other
abutments. One approach is a nonrigid dovetail connector between the molar pontic
and the second premolar. Rosenstiel, et al., 3rd ed., p 69-70
(2010)When placing a 5-unite FPD where the maxillary first premolar and first molar are
missing, leaving the second premolar as a pier abutment, and the cuspid and second
molar as abutments, a non-rigid key/keyway connector would be best placed on the:
a. Distal side of the retainer on the middle abutment (pier abutment)
b. Mesial side of the middle abutment
c. Mesial of the second molar
d. Distal of the cuspid
d. Make proximal boxes or Buccal and lingual grooves
Reduction of tooth structure is sometimes inevitable but never desirable. Minimizing the
taper is ideal but often difficult to accomplish attempting to parallel abutments.
Excessive preparation length will often violate biologic width and result in periodontal
issues. Undercuts on a fixed prosthesis will often preclude proper seating. Boxes and
grooves, if kept parallel, will enhance resistance form by providing additional vertical
planes and will aid in retention due to increased surface area. Shillingburg, et al., 3rd
ed., p 119 - 124
(2010)A patient selects the option of a 5-unit ceramometal fixed bridge in order to
replace a molar and a premolar. She also prefers a PFM for a tooth that requires full
coverage. How should the
preparations or the long span bridge abutments differ from that of the single crown in
order to increase retention?
a. Minimize the taper of the preparations
b. Lengthen the preparations to the level of the epithelial attachment
c. Incorporate an undercut on the mesial of the second molar or on the distal of the first
