CDT Comprehensive exam NEWEST
2025/26 RATED A+ 100% PASS
1.- What are wetting agents used on wax patterns for
II! II! II! II! II! II! II! II! II!
A- Allow patterns to ease the flow of metal
II! II! II! II! II! II! II! II!
II! B- clean the wax pattern for easier divesting
II! II! II! II! II! II! II!
II! C- helps surface tension thus decreasing nodules on metal castings
II! II! II! II! II! II! II! II! II!
II! D- can help in using less water powder ratio for investments - Correct Answers A- Allow patterns to ease
II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II!
II! the flow of metal II! II! II!
II! B- clean the wax pattern for easier divesting
II! II! II! II! II! II! II!
II! C- helps surface tension thus decreasing nodules on metal castings
II! II! II! II! II! II! II! II! II!
II! D- can help in using less water powder ratio for investments
II! II! II! II! II! II! II! II! II! II!
II! 2.- A depression cut into the patient's abutment tooth to prepare it for a partial framework is called
II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II!
A-groove
II! B- connector
II!
II! C- finish line
II! II! II!
II! D- rest prep - Correct Answers D- rest prep
II! II! II! II! II! II! II! II! II! II! II! II!
II! 3.·Cusp to fossa occlusion is advantageous over cusp to embrasure occlusion because
II! II! II! II! II! II! II! II! II! II! II!
A·it causes a " tight" effect
II! II! II! II! II! II!
B- provides less balancing interference
II! II! II! II!
C- it provides more balanced distribution of force
II! II! II! II! II! II! II! II!
D- is more natural in natural dentition - Correct Answers A·it causes a " tight" effect
II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II!
B- provides less balancing interference
II! II! II! II!
C- it provides more balanced distribution of force
II! II! II! II! II! II! II! II!
D- is more natural in natural dentition
II! II! II! II! II! II!
II! 4.- The bilateral curve between buccal and lingual cusps is called
II! II! II! II! II! II! II! II! II! II!
,A- curve of Spee
II! II! II! II!
B- compensating curve
II! II!
C- curve of Wilson
II! II! II! II!
D- Monson curve - Correct Answers A- curve of Spee
II! II! II! II! II! II! II! II! II! II! II! II! II! II!
B- compensating curve
II! II!
C- curve of Wilson
II! II! II! II!
D- Monson curve
II! II!
II! 5.- The chroma of a color refers to
II! II! II! II! II! II! II!
A- intensity
II! II!
B- amount of gray
II! II! II!
C- amount of orange
II! II! II! II!
D- basic color - Correct Answers A- intensity
II! II! II! II! II! II! II! II! II! II! II! II!
B- amount of gray
II! II! II!
C- amount of orange
II! II! II! II!
D- basic color
II! II!
II! 6.- When torch soldering, which part of the flame should be used
II! II! II! II! II! II! II! II! II! II! II!
A- mixing
II!
B- Reducing
II!
C- Combustion
II!
D- oxidizing - Correct Answers B- Reducing
II! II! II! II! II! II! II! II! II! II!
II! 7.- The part of the tooth that extends above the gingiva is called
II! II! II! II! II! II! II! II! II! II! II! II!
A- cingulum
II!
B- cervical
II!
C- Crown
II!
D- embrasure - Correct Answers C- Crown
II! II! II! II! II! II! II! II! II! II!
,II! 8.- A disadvantage of agar type impression materials is that they must
II! II! II! II! II! II! II! II! II! II! II!
A- should be poured immediately
II! II! II! II! II!
B- are not too accurate
II! II! II! II!
C- they give off bad odors
II! II! II! II! II! II!
D·hard materials to manage - Correct Answers A- should be poured immediately
II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II!
B- are not too accurate
II! II! II! II!
C- they give off bad odors
II! II! II! II! II! II!
D·hard materials to manage II! II! II!
II! 9.- What is a muscle of facial expression
II! II! II! II! II! II! II!
A- masseter
II! II!
B- orbicularis oris
II! II!
C- temporalis
II! II!
D- mylohoid - Correct Answers A- masseter
II! II! II! II! II! II! II! II! II! II! II!
B- orbicularis oris
II! II!
C- temporalis
II! II!
D- mylohoid
II!
II! 10.- The most simple articulator,that has no movement other than basic opening and closing is
II! II! II! II! II! II! II! II! II! II! II! II! II! II!
A-hinge II!
B- fixed guide
II! II!
C- semi adjustable
II! II! II!
D- fully adjustable - Correct Answers A-hinge
II! II! II! II! II! II! II! II! II! II! II!
B- fixed guide
II! II!
C- semi adjustable
II! II! II!
D- fully adjustable
II! II!
II! 11.- Materials that soften under heat and become solid when cold but do not change chemically are
II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II!
II! called
, A- thermocure
II! II!
B- thermoset
II!
C- thennogel
II! II!
D- thermoplastic - Correct Answers D- thermoplastic
II! II! II! II! II! II! II! II! II! II!
II! 12.- What clasp emerges from an occlusal embrasure area and engages the undercut
II! II! II! II! II! II! II! II! II! II! II! II!
A- ball clasp
II! II! II!
B- arrowhead clasp
II! II!
C- Adams clasp
II! II!
D- all of the above - Correct Answers C- Adams clasp
II! II! II! II! II! II! II! II! II! II! II! II! II! II!
II! 13.- What happens when gypsum investment is allowed to set under water
II! II! II! II! II! II! II! II! II! II! II!
A- increases its expansion
II! II! II! II!
B- decreases its expansion
II! II! II!
C- uneven expansion
II! II! II!
D- there is no expansion - Correct Answers A- increases its expansion
II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II!
B- decreases its expansion
II! II! II!
C- uneven expansion
II! II! II!
D- there is no expansion
II! II! II! II!
II! 14.- An advantage of using custom impression trays is
II! II! II! II! II! II! II! II!
A- flexibility
II! II!
B- rigidity
II!
C- uniform thickness of impression material
II! II! II! II! II! II!
D- it customizes the impression - Correct Answers A- flexibility
II! II! II! II! II! II! II! II! II! II! II! II! II! II!
B- rigidity
II!
C- uniform thickness of impression material
II! II! II! II! II! II!
D- it customizes the impression
II! II! II! II!
2025/26 RATED A+ 100% PASS
1.- What are wetting agents used on wax patterns for
II! II! II! II! II! II! II! II! II!
A- Allow patterns to ease the flow of metal
II! II! II! II! II! II! II! II!
II! B- clean the wax pattern for easier divesting
II! II! II! II! II! II! II!
II! C- helps surface tension thus decreasing nodules on metal castings
II! II! II! II! II! II! II! II! II!
II! D- can help in using less water powder ratio for investments - Correct Answers A- Allow patterns to ease
II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II!
II! the flow of metal II! II! II!
II! B- clean the wax pattern for easier divesting
II! II! II! II! II! II! II!
II! C- helps surface tension thus decreasing nodules on metal castings
II! II! II! II! II! II! II! II! II!
II! D- can help in using less water powder ratio for investments
II! II! II! II! II! II! II! II! II! II!
II! 2.- A depression cut into the patient's abutment tooth to prepare it for a partial framework is called
II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II!
A-groove
II! B- connector
II!
II! C- finish line
II! II! II!
II! D- rest prep - Correct Answers D- rest prep
II! II! II! II! II! II! II! II! II! II! II! II!
II! 3.·Cusp to fossa occlusion is advantageous over cusp to embrasure occlusion because
II! II! II! II! II! II! II! II! II! II! II!
A·it causes a " tight" effect
II! II! II! II! II! II!
B- provides less balancing interference
II! II! II! II!
C- it provides more balanced distribution of force
II! II! II! II! II! II! II! II!
D- is more natural in natural dentition - Correct Answers A·it causes a " tight" effect
II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II!
B- provides less balancing interference
II! II! II! II!
C- it provides more balanced distribution of force
II! II! II! II! II! II! II! II!
D- is more natural in natural dentition
II! II! II! II! II! II!
II! 4.- The bilateral curve between buccal and lingual cusps is called
II! II! II! II! II! II! II! II! II! II!
,A- curve of Spee
II! II! II! II!
B- compensating curve
II! II!
C- curve of Wilson
II! II! II! II!
D- Monson curve - Correct Answers A- curve of Spee
II! II! II! II! II! II! II! II! II! II! II! II! II! II!
B- compensating curve
II! II!
C- curve of Wilson
II! II! II! II!
D- Monson curve
II! II!
II! 5.- The chroma of a color refers to
II! II! II! II! II! II! II!
A- intensity
II! II!
B- amount of gray
II! II! II!
C- amount of orange
II! II! II! II!
D- basic color - Correct Answers A- intensity
II! II! II! II! II! II! II! II! II! II! II! II!
B- amount of gray
II! II! II!
C- amount of orange
II! II! II! II!
D- basic color
II! II!
II! 6.- When torch soldering, which part of the flame should be used
II! II! II! II! II! II! II! II! II! II! II!
A- mixing
II!
B- Reducing
II!
C- Combustion
II!
D- oxidizing - Correct Answers B- Reducing
II! II! II! II! II! II! II! II! II! II!
II! 7.- The part of the tooth that extends above the gingiva is called
II! II! II! II! II! II! II! II! II! II! II! II!
A- cingulum
II!
B- cervical
II!
C- Crown
II!
D- embrasure - Correct Answers C- Crown
II! II! II! II! II! II! II! II! II! II!
,II! 8.- A disadvantage of agar type impression materials is that they must
II! II! II! II! II! II! II! II! II! II! II!
A- should be poured immediately
II! II! II! II! II!
B- are not too accurate
II! II! II! II!
C- they give off bad odors
II! II! II! II! II! II!
D·hard materials to manage - Correct Answers A- should be poured immediately
II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II!
B- are not too accurate
II! II! II! II!
C- they give off bad odors
II! II! II! II! II! II!
D·hard materials to manage II! II! II!
II! 9.- What is a muscle of facial expression
II! II! II! II! II! II! II!
A- masseter
II! II!
B- orbicularis oris
II! II!
C- temporalis
II! II!
D- mylohoid - Correct Answers A- masseter
II! II! II! II! II! II! II! II! II! II! II!
B- orbicularis oris
II! II!
C- temporalis
II! II!
D- mylohoid
II!
II! 10.- The most simple articulator,that has no movement other than basic opening and closing is
II! II! II! II! II! II! II! II! II! II! II! II! II! II!
A-hinge II!
B- fixed guide
II! II!
C- semi adjustable
II! II! II!
D- fully adjustable - Correct Answers A-hinge
II! II! II! II! II! II! II! II! II! II! II!
B- fixed guide
II! II!
C- semi adjustable
II! II! II!
D- fully adjustable
II! II!
II! 11.- Materials that soften under heat and become solid when cold but do not change chemically are
II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II!
II! called
, A- thermocure
II! II!
B- thermoset
II!
C- thennogel
II! II!
D- thermoplastic - Correct Answers D- thermoplastic
II! II! II! II! II! II! II! II! II! II!
II! 12.- What clasp emerges from an occlusal embrasure area and engages the undercut
II! II! II! II! II! II! II! II! II! II! II! II!
A- ball clasp
II! II! II!
B- arrowhead clasp
II! II!
C- Adams clasp
II! II!
D- all of the above - Correct Answers C- Adams clasp
II! II! II! II! II! II! II! II! II! II! II! II! II! II!
II! 13.- What happens when gypsum investment is allowed to set under water
II! II! II! II! II! II! II! II! II! II! II!
A- increases its expansion
II! II! II! II!
B- decreases its expansion
II! II! II!
C- uneven expansion
II! II! II!
D- there is no expansion - Correct Answers A- increases its expansion
II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II!
B- decreases its expansion
II! II! II!
C- uneven expansion
II! II! II!
D- there is no expansion
II! II! II! II!
II! 14.- An advantage of using custom impression trays is
II! II! II! II! II! II! II! II!
A- flexibility
II! II!
B- rigidity
II!
C- uniform thickness of impression material
II! II! II! II! II! II!
D- it customizes the impression - Correct Answers A- flexibility
II! II! II! II! II! II! II! II! II! II! II! II! II! II!
B- rigidity
II!
C- uniform thickness of impression material
II! II! II! II! II! II!
D- it customizes the impression
II! II! II! II!
