CDT COMPREHENSIVE EXAM AND PRACTICE EXAM NEWEST 2025
ACTUAL EXAM COMPLETE 170 QUESTIONS AND CORRECT DETAILED
ANSWERS
1. 1.- What are wetting agents used on wax patterns for: A- Allow patterns to ease the
flow of metal
B- clean the wax pattern for easier divesting
C- helps surface tension thus decreasing nodules on metal castings
D- can help in using less water powder ratio for investments
2. 2.- A depression cut into the patient's abutment tooth to prepare it for a partial
framework is called: A-groove
B- connector
C- finish line D- rest prep
3. 3.·Cusp to fossa occlusion is advantageous over cusp to embrasure occlusion
because: A·it causes a " tight" effect
B- provides less balancing interference
C- it provides more balanced distribution of force
D- is more natural in natural dentition
4. 4.- The bilateral curve between buccal and lingual cusps is called: A- curve of Spee
B- compensating curve
C- curve of Wilson
D- Monson curve
5. 5.- The chroma of a color refers to: A- intensity
B- amount of gray
C- amount of orange D- basic color
,6. 6.- When torch soldering, which part of the flame should be used: A- mixing B-
Reducing
C- Combustion
D- oxidizing
7. 7.- The part of the tooth that extends above the gingiva is called: A- cingulum B-
cervical
C- Crown
D- embrasure
8. 8.- A disadvantage of agar type impression materials is that they must: A- should
be poured immediately
B- are not too accurate
C- they give off bad odors
D·hard materials to manage
9. 9.- What is a muscle of facial expression: A- masseter B-
orbicularis oris
C-
tempo
ralis
D-
myloh
oid
10. 10.- 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
,11. 11.- 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
12. 12.- 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
13. 13.- 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
14. 14.- An advantage of using custom impression trays is: A- flexibility B-
rigidity
C- uniform thickness of impression material
D- it customizes the impression
15. 15.- 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
, 16. 16.- 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
17. 17.- An imaginary line drawn through the abutment teeth,around which a
partial would tend to rotate is called: A- survey line
B- fulcrum line
C- sagittalplane
D- transverse line
18. 18.- The basic face forms include ovoid,square,and: A-round B-
modified ovoid
C- Tapered
D- rectangular
19. 19.-Application of an anti-flux prior to soldering will: A- confine solder flow to
the desired area
B- eliminate oxides within the solder connection
C- allow solder to flow easily on the solder joint
D- remove the flux from the solder joint
20. 20.- lodophors are used in the dental laboratory for what purpose: A- to replace
tin foil substitute
B- as a polishing agent
C- high shine agents
D- surface disinfectants
21. 21.- Another name for a labial bow is a: A- Hawley bow
ACTUAL EXAM COMPLETE 170 QUESTIONS AND CORRECT DETAILED
ANSWERS
1. 1.- What are wetting agents used on wax patterns for: A- Allow patterns to ease the
flow of metal
B- clean the wax pattern for easier divesting
C- helps surface tension thus decreasing nodules on metal castings
D- can help in using less water powder ratio for investments
2. 2.- A depression cut into the patient's abutment tooth to prepare it for a partial
framework is called: A-groove
B- connector
C- finish line D- rest prep
3. 3.·Cusp to fossa occlusion is advantageous over cusp to embrasure occlusion
because: A·it causes a " tight" effect
B- provides less balancing interference
C- it provides more balanced distribution of force
D- is more natural in natural dentition
4. 4.- The bilateral curve between buccal and lingual cusps is called: A- curve of Spee
B- compensating curve
C- curve of Wilson
D- Monson curve
5. 5.- The chroma of a color refers to: A- intensity
B- amount of gray
C- amount of orange D- basic color
,6. 6.- When torch soldering, which part of the flame should be used: A- mixing B-
Reducing
C- Combustion
D- oxidizing
7. 7.- The part of the tooth that extends above the gingiva is called: A- cingulum B-
cervical
C- Crown
D- embrasure
8. 8.- A disadvantage of agar type impression materials is that they must: A- should
be poured immediately
B- are not too accurate
C- they give off bad odors
D·hard materials to manage
9. 9.- What is a muscle of facial expression: A- masseter B-
orbicularis oris
C-
tempo
ralis
D-
myloh
oid
10. 10.- 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
,11. 11.- 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
12. 12.- 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
13. 13.- 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
14. 14.- An advantage of using custom impression trays is: A- flexibility B-
rigidity
C- uniform thickness of impression material
D- it customizes the impression
15. 15.- 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
, 16. 16.- 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
17. 17.- An imaginary line drawn through the abutment teeth,around which a
partial would tend to rotate is called: A- survey line
B- fulcrum line
C- sagittalplane
D- transverse line
18. 18.- The basic face forms include ovoid,square,and: A-round B-
modified ovoid
C- Tapered
D- rectangular
19. 19.-Application of an anti-flux prior to soldering will: A- confine solder flow to
the desired area
B- eliminate oxides within the solder connection
C- allow solder to flow easily on the solder joint
D- remove the flux from the solder joint
20. 20.- lodophors are used in the dental laboratory for what purpose: A- to replace
tin foil substitute
B- as a polishing agent
C- high shine agents
D- surface disinfectants
21. 21.- Another name for a labial bow is a: A- Hawley bow
