Washington Denturist Licensing Exam
Questions With Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. Which of the following instruments is primarily used to take
preliminary impressions for complete dentures?
A. Periodontal probe
B. Articulator
C. Stock tray
D. Facebow
Rationale: Stock trays are prefabricated trays used for preliminary
impressions. They provide a basic mold of the edentulous arch, which
can later be refined with custom trays for final impressions.
2. The primary purpose of border molding in denture fabrication is
to:
A. Reduce occlusal vertical dimension
B. Capture functional depth and width of the vestibule
, C. Improve esthetic tooth arrangement
D. Harden the acrylic base
Rationale: Border molding shapes the edges of a custom tray to record
the functional depth and width of the vestibule, ensuring the denture
has proper retention and comfort.
3. Which material is commonly used for the final impression of a
complete denture?
A. Plaster
B. Zinc oxide-eugenol paste
C. Alginate
D. Elastomeric impression material
Rationale: Elastomeric materials, such as polyvinyl siloxane or
polysulfide, provide high accuracy and dimensional stability, making
them ideal for final impressions.
4. The vertical dimension of occlusion (VDO) refers to:
A. The height of the mandibular teeth only
B. The width of the maxillary arch
C. The distance between the maxilla and mandible when teeth
are in occlusion
D. The thickness of the denture base
,Rationale: VDO is the distance between the jaws when the teeth are in
maximal intercuspation. Proper VDO ensures facial esthetics, phonetics,
and function.
5. Which articulator type allows simulation of lateral and protrusive
movements?
A. Simple hinge
B. Semi-adjustable
C. Non-adjustable
D. Facebow
Rationale: Semi-adjustable articulators permit controlled simulation of
jaw movements, allowing accurate functional tooth arrangement for
dentures.
6. The most common cause of denture sore spots is:
A. Poor occlusion
B. Overextension of the denture borders
C. Excessive tooth wear
D. Color mismatch
Rationale: Denture sore spots usually arise from overextended borders
or pressure areas, causing irritation to the mucosa.
7. The anterior guidance in dentures primarily influences:
A. Posterior palatal seal
, B. Incisal guidance during protrusive movements
C. Posterior occlusal contacts
D. Denture base thickness
Rationale: Anterior guidance dictates how anterior teeth contact during
protrusive movements, affecting posterior disclusion and functional
occlusion.
8. Which of the following is NOT part of the complete denture
evaluation during the delivery appointment?
A. Occlusion check
B. Border extension
C. Esthetics and phonetics
D. Root canal therapy
Rationale: Root canal therapy is unrelated to denture evaluation. The
focus is on fit, function, and patient comfort.
9. Which factor most significantly affects denture retention?
A. Tooth color
B. Saliva and tissue adaptation
C. Occlusal scheme
D. Denture base thickness
Rationale: Adequate saliva and proper adaptation of the denture base
to the tissues are critical for retention, especially in complete dentures.
Questions With Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. Which of the following instruments is primarily used to take
preliminary impressions for complete dentures?
A. Periodontal probe
B. Articulator
C. Stock tray
D. Facebow
Rationale: Stock trays are prefabricated trays used for preliminary
impressions. They provide a basic mold of the edentulous arch, which
can later be refined with custom trays for final impressions.
2. The primary purpose of border molding in denture fabrication is
to:
A. Reduce occlusal vertical dimension
B. Capture functional depth and width of the vestibule
, C. Improve esthetic tooth arrangement
D. Harden the acrylic base
Rationale: Border molding shapes the edges of a custom tray to record
the functional depth and width of the vestibule, ensuring the denture
has proper retention and comfort.
3. Which material is commonly used for the final impression of a
complete denture?
A. Plaster
B. Zinc oxide-eugenol paste
C. Alginate
D. Elastomeric impression material
Rationale: Elastomeric materials, such as polyvinyl siloxane or
polysulfide, provide high accuracy and dimensional stability, making
them ideal for final impressions.
4. The vertical dimension of occlusion (VDO) refers to:
A. The height of the mandibular teeth only
B. The width of the maxillary arch
C. The distance between the maxilla and mandible when teeth
are in occlusion
D. The thickness of the denture base
,Rationale: VDO is the distance between the jaws when the teeth are in
maximal intercuspation. Proper VDO ensures facial esthetics, phonetics,
and function.
5. Which articulator type allows simulation of lateral and protrusive
movements?
A. Simple hinge
B. Semi-adjustable
C. Non-adjustable
D. Facebow
Rationale: Semi-adjustable articulators permit controlled simulation of
jaw movements, allowing accurate functional tooth arrangement for
dentures.
6. The most common cause of denture sore spots is:
A. Poor occlusion
B. Overextension of the denture borders
C. Excessive tooth wear
D. Color mismatch
Rationale: Denture sore spots usually arise from overextended borders
or pressure areas, causing irritation to the mucosa.
7. The anterior guidance in dentures primarily influences:
A. Posterior palatal seal
, B. Incisal guidance during protrusive movements
C. Posterior occlusal contacts
D. Denture base thickness
Rationale: Anterior guidance dictates how anterior teeth contact during
protrusive movements, affecting posterior disclusion and functional
occlusion.
8. Which of the following is NOT part of the complete denture
evaluation during the delivery appointment?
A. Occlusion check
B. Border extension
C. Esthetics and phonetics
D. Root canal therapy
Rationale: Root canal therapy is unrelated to denture evaluation. The
focus is on fit, function, and patient comfort.
9. Which factor most significantly affects denture retention?
A. Tooth color
B. Saliva and tissue adaptation
C. Occlusal scheme
D. Denture base thickness
Rationale: Adequate saliva and proper adaptation of the denture base
to the tissues are critical for retention, especially in complete dentures.
