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The palatine fovea are - correct answers on either side of the midline on or near the vibrating line Which commonly used group of dental disinfectants has a residual effect that continues to kill pathogens even after it is applied? - correct answers Iodophors Where does the masseter muscle attach to the skull? - correct answers Zygomatic arch Which statement best describes the movements in the TMJ during centric occlusion, protrusion, and retrusion? - correct answers Movements occur bilaterally simultaneously and in the same direction Marginal ridges form the mesial and distal borders of - correct answers anterior and posterior teeth Which of the following alloys is commonly used in the lab for casting dental non-precious ceramic understructures? - correct answers Chrome-cobalt The condyle of the mandible fits into the mandibular fossa of the - correct answers Temporal bone Where are triangular fossae found? - correct answers Posteriors One half of the mandibular dental arch is referred to as what? - correct answers Quadrant In most states, which of the following dental pros can work without being DIRECTLY supervised by the dentist? - correct answers Technician When a dental impression is received in the lab, it should be handled first with - correct answers latex gloves Pumice used on repairs and relines must be changed - correct answers after each use Which of the following best describes the lingual cusps on the mandibular second premolar? - correct answers Under developed Which of the following is a common mistake when pouring impression that may cause loss of detail in the cast? - correct answers Set vibrator too high What is the purpose of tissue stops in a custom tray? - correct answers Helps determine when the tray is fully seated against the tissue The universal numbering system starts with tooth 1 as the - correct answers maxillary right 3rd molar where is the cusp of carabelli found on the linguals of the maxillary? - correct answers Molars What is iodophor used for? - correct answers Disinfecting Which of the following dental pros is legally authorized to permanently alter or reshape a patient's tooth? - correct answers Dentist The mandible and temporal bones are not directly in contact. What separates the mandible from the temporal bone? - correct answers Articular disc What is the innermost tissue of the living tooth called? - correct answers Pulp Which anterior has a cusp tip? - correct answers Cuspid The centers of formation (of which there are 4 or more in each tooth) are called - correct answers lobes Micro organisms such as viruses or bacteria that are carried in the blood are called - correct answers blood borne pathogens When the mandible is in physiological rest position, the: - correct answers Occlusal surfaces of the max and mand teeth have no contact Which of the following is a cranial bone? - correct answers frontal Which of the following impression materials can be poured up to 7 days after it is used? - correct answers Polyvinyl siloxane Where are mamelons found? - correct answers On the incisal edge of un-worn teeth Which are the first permanent teeth to erupt? - correct answers Max or mand first molars What is the average condylar angle set to on a fixed-movement articulator? - correct answers30 degrees Dental labs are required to implement good manufacturing practices. This requirement is mandated by which agency? - correct answers FDA What is the name for the place where two triangular ridges come together in the central groove? - correct answers Transverse ridge Which tooth has the greatest mesial-distal width? - correct answers Maxillary central The two purely vertical movements of the mandible, elevation and depression, have the same movement in each joint and are also known as - correct answers Hinge movements What does the apex of the gothic arch tracing record? - correct answers Centric relation which of the following teeth can be characterized with one or two lingual cusps? mandibular 1st premolar mandibular 2nd premolar mandibular 1st molar mandibular 2nd molar - correct answers Mandibular 2nd premolar Which type of articulator has the LEAST amount of lateral movements? - correct answers Fixed-guide What statement is MOST correct as it relates to mastication of food? - correct answers opposing teeth seldom contact during mastication What is the primary purpose of a space when fabricating a custom tray? - correct answers Allow proper flow of the impression material Which tooth has four cusps of about equal size? - correct answers Mandibular 2nd molar The most important requirement for a solder is that it must - correct answers Have a lower melting range that the parent metal The periodontal ligament surrounds the root of the tooth and connects it to what? - correct answers Alveolar bone What tooth occludes with tooth #26 when using the Universal tooth numbering system? - correct answers7 and 8 The oblique ridge joins what two cusps? - correct answers DB and ML If using bleach as a disinfectant in the dental lab, you should dilute 1 part of bleach with___ parts of water - correct answers10 What is the average horizontal guidance on fixed-movement articulators? - correct answers30 degrees Permanent premolars replace which teeth? - correct answersPrimary molars What shape does the maxillary 1st molar have from an occlusal view? - correct answersRhomboidal FDA Title 21, Part 820 is the code of federal regulations for - correct answersCorrect implementation of medical device quality systems What is the purpose of a sandblasting unit? - correct answersTo remove investment and oxide residue from castings If any repair work is done in a dental laboratory, there should be at least _____ separate pumice mix(es) and polishing attachment(s) available for polishing. - correct answers2 An occlusal bite registration should be trimmed so that it - correct answersonly covers the prepared tooth or teeth What is the location of the synovial cavities? - correct answersAs part of the TMJ Where is a triangular ridge found? - correct answerson each posterior cusp What is a facebow used to mount? - correct answersMaxillary casts only The biting surface of the posterior teeth is referred to as what? - correct answersOcclusal How long can Hepatitis virus stay alive on a cast or appliance? - correct answersWeeks Where is the marginal ridge found? - correct answersMesial and distal occlusal surfaces of posteriors only On which side of the anterior teeth is a cingulum found? - correct answersLingual Which premolar commonly has a bifurcated root? - correct answersMaxillary first Which of the following is a true statement regarding the properties of dental plaster and dental stone? - correct answersDental plaster products are more porous than dental stone products. Which is the hardest tissue in the mouth? - correct answersEnamel Which tooth most commonly would be seen to have two buccal developmental grooves? - correct answersMandibular first molar The left maxillary cuspid of the primary teeth is designated what letter? - correct answersH The mesial contact on a maxillary central is - correct answersNear the junction of the incisal and middle thirds Which articulator is recommended for the most complicated cases? - correct answersFully-adjustable What does the term fossa refer to? - correct answersAn anatomical groove or depression What is the term for a dental restoration that fits over a full prepared tooth and is secured by cement? - correct answerscrown Transverse ridge refers to a ridge that - correct answersIs an elevation in the central groove where one cusp meets another. Which impression material would NOT be acceptable for a final impression for a case involving a fixed partial denture? - correct answersalginate Which statement below regarding the Curve of Spee is correct? - correct answersIt is the anterior-posterior curvature of the occlusal surfaces of mandibular teeth From the occlusal view, which tooth or teeth are generally expected to be "rhomboidal" in shape? - correct answersupper molars What is the lamina dura? - correct answersA thin layer of dense bone that lines the tooth sockets Which muscle is NOT a muscle of mastication? masseter temporal buccinator internal pterygoid - correct answersBuccinator Which of the following abrasives is recommended for the general shaping of fired porcelains? - correct answerssintered diamond Which of the following best describes a convex surface? - correct answersA rounded elevation Dental appliances sent from the laboratory to the dental office should be shipped in - correct answersdiluted mouth wash What type of articulator only adjusts lateral and protrusive guidance? - correct answerssemi-adjustable What kind of cleaner should be used to ensure sterilization of hands? - correct answersAnti-microbial soap The rear most, upper most unstrained position of the mandible in the articular fossae is - correct answersCentric relation From an occlusal view, the distal contact of the maxillary first molar is: - correct answersbuccal to the central groove Where are the mesial and distal contacts on the maxillary first premolar located? - correct answersmore occlusal mesially than distally The fibers of the buccinator travel in what direction? - correct answersAnterior-posterior Overjet is defined as - correct answershorizontal space Which of the following is true regarding the lingual developmental groove? - correct answersIt divides the lingual of molars into two cusps On most posterior teeth, where is the distal marginal ridge situated? - correct answersSlightly more cervically than mesial marginal ridge Marginal ridges form the mesial and distal borders f - correct answersanterio