CDT COMPREHENSIVE EXAM LATEST 2025/2026 STUDY QUESTIONS
WITH CORRECT ANSWERS RATED A+
1.- One consideration to make when attaching a sprue lead to any framework wax up is that
metal remains liquid longer in the __________________parts of the casting
A- edentulous
B-lighter
C- retention
D-heavier - Answer>>> D
2.- Alcohol is used in the dental laboratory for which of the following functions
A- Fuel
B- separating medium
C-degreasing agent
D- bonding agent - Answer>>> C
3.- When a dental impression is received in the laboratory it should be handled first with
A- hygienic paper towels
B- appliance hemostats
C- latex gloves
D- sterile sponges - Answer>>> C
4.- The most important function of correct gingival embrasures is to provide for good
A- spillways
B- dental hygiene
C- contours
D- esthetics - Answer>>> A
5.- To insure that a maxillary cast is mounted in the articulator in the same way that the maxillae
relates to the temporomandibular joints which of the following should be used
,A- occlusal rims
B- facebow transfer
C- blue moose or wax bite
D- night guard - Answer>>> B
6.- Considered very versatile because of its usefulness in fabricating all types of removable
prostheses and moderately complicated fixed bridges,which of the following describes this tool
A- disposable
B- fully adjustable
C- fixed guide
D- semiadjustable - Answer>>> D
7.- The purpose of an occlusal registration is to
A-relate the casts to the articulator
B- establish verticaldimension and centric occlusion
C- develop horizontalcondylar guidance
D- maintain lateralcondylar guidance - Answer>>> B
8.- The maxillary cast can be positioned in the articulator In the approximate position that the
patient's upper jaw relates to the TMJ by using
A- split cast technique
B- panographic transfer
C- gothic arch tracing
D- face bow transfer - Answer>>> D
9.- An articulator that would be considered a "holding" instrument because of its limited function
of maintaining verticaland horizontal relations between models is the
A- hinge
,B- fixed guide
C- fully adjustable
D- semi adjustable - Answer>>> A
10.- What is a muscle of facial expression
A- masseter
B- orbicularis oris
C- temporalis
D- mylohoid - Answer>>> B
11.- The most simple articulator,that has no movement other than basic opening and closing is
A-hinge
B- fixed guide
C- semi adjustable
D- fully adjustable - Answer>>> A
12.- Materials that soften under heat and become solid when cold but do not change chemically
are called
A- thermocure
B- thermoset
C- thennogel
D- thermoplastic - Answer>>> D
13.- What clasp emerges from an occlusal embrasure area and engages the undercut
A- ball clasp
B- arrowhead clasp
C- Adams clasp
D- all of the above - Answer>>> C
14.- What happens when gypsum investment is allowed to set under water
, A- increases its expansion
B- decreases its expansion
C- uneven expansion
D- there is no expansion - Answer>>> C
15.- An advantage of using custom impression trays is
A- flexibility
B- rigidity
C- uniform thickness of impression material
D- it customizes the impression - Answer>>> D
16.- A crown sprue and button weighed 7dwt 9gr. After removing crown the remaining button
and sprue wheighed 5dwt llgr What does the crown weigh
A- 2 dwt. 22 gr
B- 2 dwt. 18gr
C- dwt. 22gr
D- 1dwt. 18gr - Answer>>> C
17.- What combination of gases is most desirable for melting ceramic alloys
A- oxygen and air
B- natural gas (or propane) and oxygen
C- natural gas (or propane) and air
D- acetylene and oxygen - Answer>>> D
18.- An imaginary line drawn through the abutment teeth,around which a partial would tend to
rotate is called
A- survey line
B- fulcrum line
WITH CORRECT ANSWERS RATED A+
1.- One consideration to make when attaching a sprue lead to any framework wax up is that
metal remains liquid longer in the __________________parts of the casting
A- edentulous
B-lighter
C- retention
D-heavier - Answer>>> D
2.- Alcohol is used in the dental laboratory for which of the following functions
A- Fuel
B- separating medium
C-degreasing agent
D- bonding agent - Answer>>> C
3.- When a dental impression is received in the laboratory it should be handled first with
A- hygienic paper towels
B- appliance hemostats
C- latex gloves
D- sterile sponges - Answer>>> C
4.- The most important function of correct gingival embrasures is to provide for good
A- spillways
B- dental hygiene
C- contours
D- esthetics - Answer>>> A
5.- To insure that a maxillary cast is mounted in the articulator in the same way that the maxillae
relates to the temporomandibular joints which of the following should be used
,A- occlusal rims
B- facebow transfer
C- blue moose or wax bite
D- night guard - Answer>>> B
6.- Considered very versatile because of its usefulness in fabricating all types of removable
prostheses and moderately complicated fixed bridges,which of the following describes this tool
A- disposable
B- fully adjustable
C- fixed guide
D- semiadjustable - Answer>>> D
7.- The purpose of an occlusal registration is to
A-relate the casts to the articulator
B- establish verticaldimension and centric occlusion
C- develop horizontalcondylar guidance
D- maintain lateralcondylar guidance - Answer>>> B
8.- The maxillary cast can be positioned in the articulator In the approximate position that the
patient's upper jaw relates to the TMJ by using
A- split cast technique
B- panographic transfer
C- gothic arch tracing
D- face bow transfer - Answer>>> D
9.- An articulator that would be considered a "holding" instrument because of its limited function
of maintaining verticaland horizontal relations between models is the
A- hinge
,B- fixed guide
C- fully adjustable
D- semi adjustable - Answer>>> A
10.- What is a muscle of facial expression
A- masseter
B- orbicularis oris
C- temporalis
D- mylohoid - Answer>>> B
11.- The most simple articulator,that has no movement other than basic opening and closing is
A-hinge
B- fixed guide
C- semi adjustable
D- fully adjustable - Answer>>> A
12.- Materials that soften under heat and become solid when cold but do not change chemically
are called
A- thermocure
B- thermoset
C- thennogel
D- thermoplastic - Answer>>> D
13.- What clasp emerges from an occlusal embrasure area and engages the undercut
A- ball clasp
B- arrowhead clasp
C- Adams clasp
D- all of the above - Answer>>> C
14.- What happens when gypsum investment is allowed to set under water
, A- increases its expansion
B- decreases its expansion
C- uneven expansion
D- there is no expansion - Answer>>> C
15.- An advantage of using custom impression trays is
A- flexibility
B- rigidity
C- uniform thickness of impression material
D- it customizes the impression - Answer>>> D
16.- A crown sprue and button weighed 7dwt 9gr. After removing crown the remaining button
and sprue wheighed 5dwt llgr What does the crown weigh
A- 2 dwt. 22 gr
B- 2 dwt. 18gr
C- dwt. 22gr
D- 1dwt. 18gr - Answer>>> C
17.- What combination of gases is most desirable for melting ceramic alloys
A- oxygen and air
B- natural gas (or propane) and oxygen
C- natural gas (or propane) and air
D- acetylene and oxygen - Answer>>> D
18.- An imaginary line drawn through the abutment teeth,around which a partial would tend to
rotate is called
A- survey line
B- fulcrum line
