1|Page
CERTIFIED DENTAL TECHNICIAN (CDT) CERTIFICATION
TEST 2026-2027 BANK QUESTIONS WITH DETAILED
VERIFIED ANSWERS EXAM QUESTIONS WILL COME
FROM HERE (100% CORRECT ANSWERS A+ GRADED
1. The primary purpose of a custom impression tray for complete
dentures is to:
A) Reduce impression material costs
B) Provide uniform material thickness for accuracy
C) Eliminate the need for border molding
D) Increase patient comfort during the procedure
Answer: B. A custom tray is fabricated on a study cast to ensure
uniform thickness of the final impression material, typically 2-3 mm.
This prevents distortion from uneven polymerization shrinkage or
thermal contraction of the impression material, leading to a more
accurate master cast.
2. The posterior palatal seal area is recorded to:
A) Improve the esthetics of the maxillary denture
B) Enhance maxillary denture retention
C) Prevent the denture from impinging on the soft palate
D) Provide a guide for the dental laboratory technician
,2|Page
Answer: B. The posterior palatal seal creates a positive peripheral
seal at the junction of the hard and soft palate. By slightly displacing the
compressible tissue, it maintains a vacuum effect against the cast
during processing, which translates to improved retention in the
mouth.
3. Which cast material is best suited for the fabrication of a master cast
for a complete denture?
A) Plaster of Paris
B) Dental stone (Type III)
C) High-strength dental stone (Type IV)
D) Refractory investment
Answer: C. A Type IV dental stone, often referred to as die stone, has
low expansion and high compressive strength. This is essential for a
denture master cast to withstand the pressure of packing and
processing acrylic resin without fracturing, especially around the
delicate posterior palatal seal area.
4. A face-bow transfer is used to record the:
A) Centric relation record
B) Orientation of the maxillary arch to the hinge axis
C) Vertical dimension of occlusion
D) Horizontal overlap of anterior teeth
Answer: B. The face-bow records the spatial relationship of the
maxillary occlusal surfaces to the patient's condylar hinge axis. This
,3|Page
allows the maxillary cast to be mounted in the same orientation on the
articulator, ensuring that the arc of closure on the articulator closely
matches the patient's mandibular movement.
5. The Bennett angle on an articulator represents the:
A) Angle of the condylar path in the sagittal plane
B) Medial movement of the orbiting condyle during lateral excursion
C) Vertical increase in pin height during protrusion
D) Angle of the incisal guidance
Answer: B. Also known as the lateral condylar guidance, the Bennett
angle is the angle formed between the sagittal plane and the path of
the non-working (orbiting) condyle as it moves medially and downward.
An average value of 15 degrees is often used for a non-programmable
articulator.
6. Arranging teeth with a curve of Spee compensates for:
A) Incongruent condylar and incisal guidance angles
B) Protrusive condylar path to prevent posterior disclusion
C) Aesthetics of the buccal corridor
D) Lingualized occlusal schemes only
Answer: B. The curve of Spee, a curved alignment of the posterior
teeth in the sagittal plane, works with the condylar guidance to provide
balanced occlusion. During protrusion, it helps ensure that the
posterior teeth maintain contact or near-contact, preventing the
denture from tipping and dislodging.
, 4|Page
7. Lingualized occlusion is characterized by:
A) Maxillary palatal cusps contacting the mandibular central fossae
B) Maxillary buccal cusps contacting the mandibular buccal cusps
C) Flat, monoplane teeth arranged without any curves
D) Anatomic teeth with 33-degree cusp angles
Answer: A. In a lingualized occlusal scheme, the primary functional
contact is between the maxillary palatal cusps and the mandibular
central fossae. The mandibular teeth are generally non-anatomic or
semi-anatomic. This scheme combines the esthetics of anatomic
maxillary teeth with the stability of a non-anatomic setup.
8. The primary reason for festooning a denture base is to:
A) Reduce the weight of the denture
B) Create a natural, contoured appearance of the gingiva
C) Strengthen the labial flange
D) Provide a guide for tooth arrangement
Answer: B. Festooning is the carving of the wax baseplate to simulate
the natural contours of alveolar bone, root eminences, and gingival
tissue. This is a critical step in denture esthetics, as a poorly festooned
denture will appear flat and artificial.
9. Which tooth mold is most appropriate for a patient with a low,
ridgey maxillary arch and a class III skeletal tendency?
CERTIFIED DENTAL TECHNICIAN (CDT) CERTIFICATION
TEST 2026-2027 BANK QUESTIONS WITH DETAILED
VERIFIED ANSWERS EXAM QUESTIONS WILL COME
FROM HERE (100% CORRECT ANSWERS A+ GRADED
1. The primary purpose of a custom impression tray for complete
dentures is to:
A) Reduce impression material costs
B) Provide uniform material thickness for accuracy
C) Eliminate the need for border molding
D) Increase patient comfort during the procedure
Answer: B. A custom tray is fabricated on a study cast to ensure
uniform thickness of the final impression material, typically 2-3 mm.
This prevents distortion from uneven polymerization shrinkage or
thermal contraction of the impression material, leading to a more
accurate master cast.
2. The posterior palatal seal area is recorded to:
A) Improve the esthetics of the maxillary denture
B) Enhance maxillary denture retention
C) Prevent the denture from impinging on the soft palate
D) Provide a guide for the dental laboratory technician
,2|Page
Answer: B. The posterior palatal seal creates a positive peripheral
seal at the junction of the hard and soft palate. By slightly displacing the
compressible tissue, it maintains a vacuum effect against the cast
during processing, which translates to improved retention in the
mouth.
3. Which cast material is best suited for the fabrication of a master cast
for a complete denture?
A) Plaster of Paris
B) Dental stone (Type III)
C) High-strength dental stone (Type IV)
D) Refractory investment
Answer: C. A Type IV dental stone, often referred to as die stone, has
low expansion and high compressive strength. This is essential for a
denture master cast to withstand the pressure of packing and
processing acrylic resin without fracturing, especially around the
delicate posterior palatal seal area.
4. A face-bow transfer is used to record the:
A) Centric relation record
B) Orientation of the maxillary arch to the hinge axis
C) Vertical dimension of occlusion
D) Horizontal overlap of anterior teeth
Answer: B. The face-bow records the spatial relationship of the
maxillary occlusal surfaces to the patient's condylar hinge axis. This
,3|Page
allows the maxillary cast to be mounted in the same orientation on the
articulator, ensuring that the arc of closure on the articulator closely
matches the patient's mandibular movement.
5. The Bennett angle on an articulator represents the:
A) Angle of the condylar path in the sagittal plane
B) Medial movement of the orbiting condyle during lateral excursion
C) Vertical increase in pin height during protrusion
D) Angle of the incisal guidance
Answer: B. Also known as the lateral condylar guidance, the Bennett
angle is the angle formed between the sagittal plane and the path of
the non-working (orbiting) condyle as it moves medially and downward.
An average value of 15 degrees is often used for a non-programmable
articulator.
6. Arranging teeth with a curve of Spee compensates for:
A) Incongruent condylar and incisal guidance angles
B) Protrusive condylar path to prevent posterior disclusion
C) Aesthetics of the buccal corridor
D) Lingualized occlusal schemes only
Answer: B. The curve of Spee, a curved alignment of the posterior
teeth in the sagittal plane, works with the condylar guidance to provide
balanced occlusion. During protrusion, it helps ensure that the
posterior teeth maintain contact or near-contact, preventing the
denture from tipping and dislodging.
, 4|Page
7. Lingualized occlusion is characterized by:
A) Maxillary palatal cusps contacting the mandibular central fossae
B) Maxillary buccal cusps contacting the mandibular buccal cusps
C) Flat, monoplane teeth arranged without any curves
D) Anatomic teeth with 33-degree cusp angles
Answer: A. In a lingualized occlusal scheme, the primary functional
contact is between the maxillary palatal cusps and the mandibular
central fossae. The mandibular teeth are generally non-anatomic or
semi-anatomic. This scheme combines the esthetics of anatomic
maxillary teeth with the stability of a non-anatomic setup.
8. The primary reason for festooning a denture base is to:
A) Reduce the weight of the denture
B) Create a natural, contoured appearance of the gingiva
C) Strengthen the labial flange
D) Provide a guide for tooth arrangement
Answer: B. Festooning is the carving of the wax baseplate to simulate
the natural contours of alveolar bone, root eminences, and gingival
tissue. This is a critical step in denture esthetics, as a poorly festooned
denture will appear flat and artificial.
9. Which tooth mold is most appropriate for a patient with a low,
ridgey maxillary arch and a class III skeletal tendency?
