CDT Comprehensive Exam Latest 2023 Already Passed

CDT Comprehensive Exam Latest 2023 Already Passed 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 An articulator that has adjustable but straight lateral and protrusive guidance is called a semi-adjustable articulator. Wax festooning is the process of anatomically waxing the denture anatomically waxing the denture the central fossa of the maxillary first molar Mutually protected occlusion has posterior contacts in centric During denture flask wax elimination, immersion in the boilout tank for too much time may result in what outcome? the wax to melt and soak into the mold In Class I centric occlusion, the maxillary anterior teeth occlude with the facio-incisal edge of mandibular anterior teeth The____ is where the two centrals line up and is marked by the dentist midline The mesiobuccal cusp of the maxillary first molar is in alignment with the mesiobuccal groove of the mandibular first molar in what type of occlusion? class I What is the process used to resurface the tissue side of a denture with new base material for a better fit? relining Monomer is a liquid for mixing methyl methacrylate/acrylic. The mandibular second premolar contacts the maxillary first and second premolars. Which of the following is found on the maxilla? tuberosity According to cusp-fossa theory, cusps tips will not wear away because cusp tips do not actually occlude with opposing dentition The Curve of Spee is the anterior-posterior curvature of the occlusal surfaces of mandibular teeth. What is the proper order or operations after receiving a denture back from the dentist with impression material on the tissue surface? box impression, trim cast, cut notches, blockout undercuts Polymerization of the denture means curing the denture base The rear most, upper most, midmost position of the mandible in the articular fossa is centric relation When finishing complete dentures, what should the pumice be applied to? directly to the object being polished Which statement best describes the movements in the temporomandibular joint during centric occlusion, protrusion and retrusion? Movements occur bilaterally simultaneously and in the same direction What is the MOST important reason to allow the gypsum cast to fully set? avoid loss of surface detail. Monomer is a liquid for mixing methyl methacrylate/acrylic. The mandibular second premolar contacts the maxillary first and second premolars. The mesiobuccal cusp of the maxillary first molar is in alignment with the mesiobuccal groove of the mandibular first molar in what type of occlusion? class I Where are the synovial cavities located? as part of the TMJ 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 A non-arcon articulator is one which has the condyles on the upper member. In a Class I occlusion a tooth has contact with two teeth in the opposing arch. There are two exceptions to this statement and they are the upper third molars and lower centrals One advantage specific to cusp to marginal ridge occlusion is that it helps to maintain stability if a tooth is lost. Frenum areas in a baseplate must be relieved for comfort. The appliance which is best to relieve hyperactive muscles is called a/an TMJ appliance The____ is where the two centrals line up and is marked by the dentist. midline Distoclusion describes a _______________ occlusion class II Remounting index should be accomplished _____ completing all selective grinding and _____ separating denture from master cast and original mounting. after; before What is the commercial name for a prefabricated hinge and lock system that can be substituted for clasps in an RPD framework? swing-lock Which of the following is the correct definition of retention? ability to resist removal of the RPD in an occlusal direction Why should wax be removed from the clasp arms before processing? keep clasp from becoming embedded in acrylic Which of the following statements is correct when electropolishing a partial? The cathode is the negative pole on the machine Which is a BEST process to relieve the clasp of strain during the recovery process? use a sharp knife to cut away the stone tooth under the clasp When boxing an impression, where should the top of the boxing wax representing the base of the cast be? 15 mm above the highest point of the impression Which wax is MOST ideal for dipping refractory casts? beeswax What is the correct term for describing the diameter of a metal wire? gauge What are three MOST important qualities of a master cast? accurate, dense and strong When may auxiliary sprues be indicated? when there is a large isolated clasp on a molar abutment Why is a dry master cast NOT desirable for duplication? would cause difficulty in its removal Which is not a bar clasp assembly? hairpin Which side of the wax should you use the hot spatula on when sealing the beading wax to the impression? the side farthest from the peripheral roll of the impression What color is reserved for outlining metal parts of the RPD? brown 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 color is used on a master cast to outline the extent of acrylic resin denture base coverage? blue Why is it important to make multiple dove-tail cuts in the area previously occupied by the distal extension of an altered cast? provides mechanical retention for the corrected addition Imperfections in distal extension casts can be corrected using what process? altered cast technique Before setting on a removable partial denture, the cast should have a separator applied prior to adding wax. What is the minimal metal thickness in stress bearing areas of the partial denture? .5 mm When soldering cast partials, which type of flux is recommended? fluoride Which of the following is most correct when finishing a partial denture with peripheral borders? The borders should remain unaltered What should be used to remove resin flash from the necks of teeth when finishing the denture? trimming chisel When using an oxygen torch for casting partial frames, the torch tip should be multi-orifice with a reducing flame Why should water be allowed to cover only the base of the flask while cooling the hydrocolloid during cast duplication? to allow it to cool it from the bottom upward What is the best choice of major connector for a Class IV maxillary Kennedy case? horseshoe What is the correct term for describing the diameter of a metal wire? gauge Which of the following is MOST correct when polishing a chrome partial denture? use high speed (24,000 rpm) and light pressure What which of the following is the proper technique for replacing a cast circumferential clasp with a wrought wire clasp? embed a retentive loop in self-curing acrylic What movements can fixed-guide articulators made to produce? lateral and protrusive What color on a master cast is limited to marking points of undercut for positioning clasp retentive tips and tissue relief areas? red Which class best represents a single but bilateral edentulous area located anterior to the remaining natural teeth? Class IV What should be used to secure the tooth to the framework when replacing or adding an artificial tooth to a metal framework? self-curing resin Why is it important to make multiple dove-tail cuts in the area previously occupied by the distal extension of an altered cast? provides mechanical retention for the corrected addition provides mechanical retention for the corrected addition ejector press The palatal strap major connector is most often used for _______ posterior toothborne partial dentures bilateral 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