SRTA Prosthodontic Examination
Practice Exam 2026 | 100 Advanced
Questions & Answers with Detailed
Rationales | SRTA Dental Licensing
Exam Prep & Study Guide
1. A patient presents with a severely worn mandibular dentition and
decreased lower facial height. Which finding most strongly suggests loss of
vertical dimension of occlusion?
A. Increased freeway space
B. Increased lower facial height
C. Decreased interocclusal distance at rest
D. Increased occlusal plane angle
Answer: Increased freeway space
Rationale: Loss of vertical dimension generally produces an increased
interocclusal or freeway space when the mandible is at physiologic rest.
, 2. During complete denture fabrication, the most important factor in
determining the posterior palatal seal is:
A. Ridge height
B. Compressibility of the tissues at the vibrating-line region
C. Incisal guidance
D. Occlusal vertical dimension
Answer: Compressibility of the tissues at the vibrating-line region
Rationale: The posterior palatal seal is determined by the anatomic and
physiologic characteristics of the soft palate and the compressibility of tissues in
the posterior palatal region.
3. A complete denture becomes unstable during unilateral chewing on the left
side. Which occlusal factor should be evaluated first?
A. Bilateral balanced occlusion
B. Shade of the posterior teeth
C. Gingival festooning
D. Anterior tooth length
Answer: Bilateral balanced occlusion
Rationale: Proper bilateral balanced occlusion helps maintain simultaneous
contacts during eccentric movements and reduces denture tipping during
function.
4. Which impression material is generally most appropriate for making a
definitive impression of a completely edentulous arch when maximum
tissue detail and dimensional stability are desired?
A. Alginate
B. Impression compound alone
,C. Polyvinyl siloxane
D. Zinc oxide-eugenol-containing temporary cement
Answer: Polyvinyl siloxane
Rationale: Polyvinyl siloxane provides excellent elastic recovery, dimensional
stability, and detailed reproduction, making it useful for definitive edentulous
impressions.
5. A patient has a highly resorbed mandibular ridge with a movable fibrous
tissue layer. Which impression approach is most appropriate?
A. Heavy pressure impression
B. Mucostatic technique with controlled relief
C. Maximum compression of all tissues
D. No border molding
Answer: Mucostatic technique with controlled relief
Rationale: Mobile or displaceable tissues should generally be recorded with
minimal distortion so that the denture does not create instability when the
tissues rebound during function.
6. The primary support area of a conventional mandibular complete denture
is the:
A. Retromolar pad only
B. Buccal shelf
C. Lingual frenum
D. Mylohyoid ridge
Answer: Buccal shelf
, Rationale: The mandibular buccal shelf provides broad, relatively resistant
cortical support and is oriented favorably to receive occlusal forces.
7. Which structure should be completely covered by the mandibular complete
denture whenever anatomically possible?
A. Mental foramen
B. Retromolar pad
C. Mandibular tori
D. Genial tubercles
Answer: Retromolar pad
Rationale: The retromolar pad is an important landmark for mandibular denture
extension and should be covered because it contributes to support and stability.
8. A maxillary complete denture repeatedly dislodges when the patient opens
widely. The most likely cause is:
A. Excessive posterior palatal seal
B. Overextension into the coronoid notch or distobuccal vestibule
C. Excessive mandibular ridge height
D. Insufficient mandibular flange extension
Answer: Overextension into the coronoid notch or distobuccal vestibule
Rationale: Mandibular movement and coronoid process activity can dislodge an
overextended maxillary denture in the distobuccal region.
9. Which principle is most important when establishing the occlusal plane for
complete dentures?
Practice Exam 2026 | 100 Advanced
Questions & Answers with Detailed
Rationales | SRTA Dental Licensing
Exam Prep & Study Guide
1. A patient presents with a severely worn mandibular dentition and
decreased lower facial height. Which finding most strongly suggests loss of
vertical dimension of occlusion?
A. Increased freeway space
B. Increased lower facial height
C. Decreased interocclusal distance at rest
D. Increased occlusal plane angle
Answer: Increased freeway space
Rationale: Loss of vertical dimension generally produces an increased
interocclusal or freeway space when the mandible is at physiologic rest.
, 2. During complete denture fabrication, the most important factor in
determining the posterior palatal seal is:
A. Ridge height
B. Compressibility of the tissues at the vibrating-line region
C. Incisal guidance
D. Occlusal vertical dimension
Answer: Compressibility of the tissues at the vibrating-line region
Rationale: The posterior palatal seal is determined by the anatomic and
physiologic characteristics of the soft palate and the compressibility of tissues in
the posterior palatal region.
3. A complete denture becomes unstable during unilateral chewing on the left
side. Which occlusal factor should be evaluated first?
A. Bilateral balanced occlusion
B. Shade of the posterior teeth
C. Gingival festooning
D. Anterior tooth length
Answer: Bilateral balanced occlusion
Rationale: Proper bilateral balanced occlusion helps maintain simultaneous
contacts during eccentric movements and reduces denture tipping during
function.
4. Which impression material is generally most appropriate for making a
definitive impression of a completely edentulous arch when maximum
tissue detail and dimensional stability are desired?
A. Alginate
B. Impression compound alone
,C. Polyvinyl siloxane
D. Zinc oxide-eugenol-containing temporary cement
Answer: Polyvinyl siloxane
Rationale: Polyvinyl siloxane provides excellent elastic recovery, dimensional
stability, and detailed reproduction, making it useful for definitive edentulous
impressions.
5. A patient has a highly resorbed mandibular ridge with a movable fibrous
tissue layer. Which impression approach is most appropriate?
A. Heavy pressure impression
B. Mucostatic technique with controlled relief
C. Maximum compression of all tissues
D. No border molding
Answer: Mucostatic technique with controlled relief
Rationale: Mobile or displaceable tissues should generally be recorded with
minimal distortion so that the denture does not create instability when the
tissues rebound during function.
6. The primary support area of a conventional mandibular complete denture
is the:
A. Retromolar pad only
B. Buccal shelf
C. Lingual frenum
D. Mylohyoid ridge
Answer: Buccal shelf
, Rationale: The mandibular buccal shelf provides broad, relatively resistant
cortical support and is oriented favorably to receive occlusal forces.
7. Which structure should be completely covered by the mandibular complete
denture whenever anatomically possible?
A. Mental foramen
B. Retromolar pad
C. Mandibular tori
D. Genial tubercles
Answer: Retromolar pad
Rationale: The retromolar pad is an important landmark for mandibular denture
extension and should be covered because it contributes to support and stability.
8. A maxillary complete denture repeatedly dislodges when the patient opens
widely. The most likely cause is:
A. Excessive posterior palatal seal
B. Overextension into the coronoid notch or distobuccal vestibule
C. Excessive mandibular ridge height
D. Insufficient mandibular flange extension
Answer: Overextension into the coronoid notch or distobuccal vestibule
Rationale: Mandibular movement and coronoid process activity can dislodge an
overextended maxillary denture in the distobuccal region.
9. Which principle is most important when establishing the occlusal plane for
complete dentures?
