CDT COMPREHENSIVE EXAM RECENT QUESTIONS AND
ANSWERS RATED A+
✔✔Which class best represents a unilateral edentulous area located posterior to the
remaining natural teeth? - ✔✔Class II
✔✔Which teeth should have most of the contact in working excursion of a RPD? -
✔✔natural teeth
✔✔What is the minimal metal thickness in stress bearing areas of the partial denture? -
✔✔.5 mm
✔✔Which of the following options would BEST prevent distortion of the hydrocolloid
mold during duplication? - ✔✔the master cast should be removed from the mold quickly
✔✔Which is NOT one of the four factors that influence a clasp's arm flexibility? -
✔✔type of plastic used
✔✔Which is NOT one of the conditions that make an acceptable path of insertion? -
✔✔Undesirable undercuts can be found on potential abutments
✔✔What color on a master cast is limited to marking points of undercut for positioning
clasp retentive tips and tissue relief areas? - ✔✔red
✔✔The palatal strap major connector is most often used for _______ posterior
toothborne partial dentures - ✔✔bilateral
✔✔What type of separator is recommended for the cast when applying occlusion rims
to a metal RPD? - ✔✔a layer of tinfoil
✔✔When must you use an indirect retainer? - ✔✔A Class I or a Class II partial denture
✔✔Which of the following is most correct when finishing a partial denture with
peripheral borders? - ✔✔The borders should remain unaltered
✔✔The peripheral borders of maxillary major connectors should be located at least
_______ away from gingival margins. - ✔✔6 mm
✔✔Imperfections in distal extension casts can be corrected using what process? -
✔✔altered cast technique
, ✔✔What design should be used for a lingual bar lacking gingival distance? - ✔✔lingual
plate
✔✔Which is not a general guideline for placing a rest on a metal based partial? - ✔✔A
clasp assembly never has a rest associated with it.
✔✔What would be the MOST ideal indication for the use of an I-Bar clasp? - ✔✔a .010
mid-buccal undercut is present
✔✔When laser welding, what gas is needed in the atmosphere? - ✔✔argon
✔✔When is a lingual plate design needed? - ✔✔all of above, indirect retention,
peridontal stabilizer, presence of tori
✔✔When using a high pressure sandblaster for a partial denture framework, what is the
MOST likely outcome if the framework is positioned too close to the nozzle? - ✔✔high
pressure air and abrasive could damage framework
✔✔What movements can fixed-guide articulators made to produce? - ✔✔lateral and
protrusive
✔✔Where are rests typically placed? - ✔✔occlusally, lingually and incisally
✔✔A clasp should provide? - ✔✔all of above, retention and reciprocator, bracing,
encirclement
✔✔ Overjet is defined as - ✔✔horizontal overlap.
✔✔What is the MOST likely cause for breaking a denture reline when removing the cast
- ✔✔undercuts were not removed before the cast was poured
✔✔Distoclusion describes a _______________ occlusion - ✔✔class II
✔✔The rear most, upper most, midmost position of the mandible in the articular fossa is
- ✔✔centric relation
✔✔The bilateral curve in which molars are set is called - ✔✔the Curve of Wilson
✔✔What is the process of replacing all palatal acrylic without disturbing existing denture
teeth? - ✔✔rebasing
✔✔What is the MOST likely cause for porosity after processing and deflasking a
denture? - ✔✔the curing temperature was too high or the flask was underpacked
ANSWERS RATED A+
✔✔Which class best represents a unilateral edentulous area located posterior to the
remaining natural teeth? - ✔✔Class II
✔✔Which teeth should have most of the contact in working excursion of a RPD? -
✔✔natural teeth
✔✔What is the minimal metal thickness in stress bearing areas of the partial denture? -
✔✔.5 mm
✔✔Which of the following options would BEST prevent distortion of the hydrocolloid
mold during duplication? - ✔✔the master cast should be removed from the mold quickly
✔✔Which is NOT one of the four factors that influence a clasp's arm flexibility? -
✔✔type of plastic used
✔✔Which is NOT one of the conditions that make an acceptable path of insertion? -
✔✔Undesirable undercuts can be found on potential abutments
✔✔What color on a master cast is limited to marking points of undercut for positioning
clasp retentive tips and tissue relief areas? - ✔✔red
✔✔The palatal strap major connector is most often used for _______ posterior
toothborne partial dentures - ✔✔bilateral
✔✔What type of separator is recommended for the cast when applying occlusion rims
to a metal RPD? - ✔✔a layer of tinfoil
✔✔When must you use an indirect retainer? - ✔✔A Class I or a Class II partial denture
✔✔Which of the following is most correct when finishing a partial denture with
peripheral borders? - ✔✔The borders should remain unaltered
✔✔The peripheral borders of maxillary major connectors should be located at least
_______ away from gingival margins. - ✔✔6 mm
✔✔Imperfections in distal extension casts can be corrected using what process? -
✔✔altered cast technique
, ✔✔What design should be used for a lingual bar lacking gingival distance? - ✔✔lingual
plate
✔✔Which is not a general guideline for placing a rest on a metal based partial? - ✔✔A
clasp assembly never has a rest associated with it.
✔✔What would be the MOST ideal indication for the use of an I-Bar clasp? - ✔✔a .010
mid-buccal undercut is present
✔✔When laser welding, what gas is needed in the atmosphere? - ✔✔argon
✔✔When is a lingual plate design needed? - ✔✔all of above, indirect retention,
peridontal stabilizer, presence of tori
✔✔When using a high pressure sandblaster for a partial denture framework, what is the
MOST likely outcome if the framework is positioned too close to the nozzle? - ✔✔high
pressure air and abrasive could damage framework
✔✔What movements can fixed-guide articulators made to produce? - ✔✔lateral and
protrusive
✔✔Where are rests typically placed? - ✔✔occlusally, lingually and incisally
✔✔A clasp should provide? - ✔✔all of above, retention and reciprocator, bracing,
encirclement
✔✔ Overjet is defined as - ✔✔horizontal overlap.
✔✔What is the MOST likely cause for breaking a denture reline when removing the cast
- ✔✔undercuts were not removed before the cast was poured
✔✔Distoclusion describes a _______________ occlusion - ✔✔class II
✔✔The rear most, upper most, midmost position of the mandible in the articular fossa is
- ✔✔centric relation
✔✔The bilateral curve in which molars are set is called - ✔✔the Curve of Wilson
✔✔What is the process of replacing all palatal acrylic without disturbing existing denture
teeth? - ✔✔rebasing
✔✔What is the MOST likely cause for porosity after processing and deflasking a
denture? - ✔✔the curing temperature was too high or the flask was underpacked
