Dental Laboratory Technician Trainee Practice Test

These questions are part of the practice quiz. Start practicing

• Compare zirconia crowns to porcelain-fused-to-metal crowns in terms of strength and translucency.
• Which term is defined as the stone or plastic replica obtained from the impression?
• What is the purpose of a shade map or shade-matching protocol in a dental lab?
• What is the function of an oxide layer on a metal surface in metal-ceramic restorations?
• Posterior teeth come on a card of eight teeth.
• When is a custom impression tray indicated?
• Why is documentation and traceability important in dental lab work?
• Which of the following lists the common failure modes of denture bases during processing, and how can they be prevented?
• Define a die in crown and bridge fabrication and its purpose.
• Which property of gypsum casts is affected by the water/powder ratio besides setting time and expansion?
• Which material offers higher strength and reliable bonding?
• Describe the typical finishing protocol for denture acrylic resin.
• Which materials are examples of elastomeric impression materials?
• Which term describes the facial surface of the anterior teeth?
• What is the function of a die spacer and how does it affect cement film thickness?
• The upper arch is called the ___.
• Which category includes baseplate wax, set-up wax, and rope wax?
• Each arch is separated into two ___.
• A depression in the occlusal surface of the tooth is called which term?
• According to the American Dental Association, dentures should be replaced every how many years?
• Which statement about Heat Injection Processing is true?
• What property of Type IV dental stone makes it suitable for dies?
• What is a key advantage of milling zirconia crowns using CAD/CAM?
• Which term describes the chewing or masticating surface of posterior teeth?
• What is the role of investment expansion in casting accuracy?
• Which denture type is placed immediately after tooth extractions and is inserted right away?
• Which material is commonly used as a denture base and is known for good aesthetics and biocompatibility?
• What term describes materials used to take an impression of the mouth for replication in gypsum?
• What are common denture base materials and one key property of each?
• Type III stone is best described as used for what?
• How is a shade guide used effectively in daily practice?
• Finishing primarily involves which activity to ensure patient comfort?
• What is the finish line in crown preparation?
• Which tools are used to add and carve away wax on a wax denture base?
• Crown or bridge cemented into place, not intended to be removed is described by which term?
• Which term best describes the material used to take impressions of the mouth for denture fabrication?
• Which outcome is associated with a well-defined crown finish line?
• During lost-wax casting, which statement about the burnout stage is correct?
• Which term describes the front six teeth?
• Which statement best describes the purpose of a master model in the crown workflow?
• Which material is used to create the denture base wax types including baseplate wax, set-up wax, and rope wax?
• Two models that come together exactly without bite registration are described as what?
• Define metamerism and explain why it matters in shade matching.
• In porcelain layering sequence for porcelain-fused-to-metal restorations, after applying opaquer, what is applied next?
• Why is a shoulder-margin often preferred for all-ceramic crowns?
• Which statement best summarizes the role of isolation during processing of prostheses?
• Which instrument is used to cut and shape acrylic denture bases and teeth?
• Which material is described as a flexible impression material used to form molds in denture processing?
• Why is sprue design critical in the casting process?
• What is porosity in casting and what are typical root causes?
• Which of the following is a typical method to verify marginal fit of a CAD/CAM crown chairside?
• Which step directly affects patient comfort by refining borders and contours after processing?
• What is the primary purpose of a bite registration in prosthetic fabrication?
• The upper jaw is formed by which bone?
• What is an occlusal rim and what is its purpose in denture fabrication?
• Complete or partial dentures, intended to be removed, are described by which term?
• Which of the following is NOT listed as a primary property to evaluate when selecting a base metal alloy for a metal-ceramic crown?
• Which term describes the front surface of the anterior teeth?
• Outline the steps in the lost-wax casting process.
• Which of the following is NOT a factor influencing color stability during the polymerization of denture acrylic?
• Which restorative approach reduces veneer requirements because it is milled from a single block?
• Type II plaster is typically used for which kind of dental models?
• What mechanical test is commonly used to assess denture base resin and what does it measure?
• Which of the following is a primary benefit of using a shade-matching protocol in a dental lab?
• Which denture processing method is more expensive and time-consuming but yields higher quality dentures?
• What factors commonly contribute to porcelain chipping in metal-ceramic restorations, and how can chipping be minimized?
• How does vertical dimension affect denture function and patient comfort?
• Which of the following statements best describes why traceability supports regulatory compliance?
• What is the master impression in complete denture fabrication?
• Which statement best describes a factor that increases porcelain chipping risk in metal-ceramic restorations?
• What are common causes of digital scans failing to capture margins, and how can it be mitigated?
• Polishing is primarily used to do what?
• What does OSHA's Hazard Communication Standard require for chemicals used in the dental lab?
• What term is used to describe fabricating entirely new dentures after the healing period is completed?
• Why are functional borders important in denture impressions?
• Which term describes the cheek side surface of posterior teeth?
• What is polymerization in denture processing, and what factors influence color stability?
• Which statement about the bite fork occlusal registration is true?
• Which storage condition for elastomeric impressions helps maintain dimensional stability?
• What is the primary difference between conventional luting cements and adhesive resin cements in crown seating?
• Indirect retainers in removable partial dentures are designed to resist rotation of the denture about which feature?
• What is the difference between a soft liner and a hard liner in dentures?
• What is the process of glazing and firing porcelain, and what does it achieve?
• The ASAP impression approach offers which main benefit?
• Which term is the material used to make a stone or plastic replica of an arch?
• What is the purpose of a master die and how is it used in a crown restoration workflow?
• The biting edge of the anterior teeth is known as what?
• A poured master cast shows several small voids near the margins. What is a practical corrective step?
• Distinguish chair-side shade matching from laboratory shade matching.
• Which of the following is a benefit of using a custom impression tray?
• What steps are involved in arranging denture teeth for balanced occlusion?
• Which statement best describes centric relation?
• Which term describes a step completed in the operatory with the patient?
• What should be avoided during cleaning to prevent damage to a finished prosthesis?
• Which elastomeric impression material is known for excellent fine detail and dimensional stability?
• The biting edge of the anterior teeth is called which term?
• Which device is used to maintain wax working temperatures during fabrication?
• Which item is used to register the bite by relating the upper model to the lower model?
• What term describes two models that fit together exactly according to the natural relationship of the arches, without bite registration?
• Which factor is a key feature of balancing occlusion in denture design to prevent fracture?
• What is made from the model to produce a better fitting tray for a more accurate impression?
• What is the typical axial reduction recommended for a posterior full veneer crown?
• The lower arch is called the ___.
• The oxide layer on a metal surface should be:
• The back ten teeth are called the ___.
• What is the purpose of border molding in complete denture impression techniques?
• Surface toward the median line is known as which term?
• What is the primary advantage of Type IV die stone over Type II and Type III gypsum products?
• Which of the following is a characteristic advantage of self-etch cements?
• Which statement about immediate dentures is true?
• In the context of crown fabrication, which item is most closely associated with ensuring precise margins?
• A depression in the occlusal surface of the tooth is described by which term?
• Which properties are influenced by the water-to-powder ratio when pouring gypsum casts?
• Which tool is used to cut and carve acrylic denture bases and teeth?
• Name a common use of 3D printing in a dental laboratory.
• Which statement describes Heat Injection Processing?
• For orthodontic lab work, what are two common components the lab fabricates for fixed appliances?
• Which statement best describes the finishing stage in denture fabrication?
• How should patient and prescription information be handled by a dental laboratory to protect privacy?
• What is the recommended procedure for shade matching to ensure accuracy?
• What method is typically used to verify marginal fit of a CAD/CAM crown chairside?
• What is a noted esthetic limitation of monolithic zirconia compared with layered porcelain?
• What is a typical finishing step required for zirconia restorations prior to veneering when required by the manufacturer?
• What is the main purpose of an impression for crown and bridge work?
• Which term refers to dental stone and plaster when mixed with water and set into an irreversible solid mass?
• What lighting condition is recommended for shade matching?
• In ceramic veneer layering, why is surface glaze important?
• In removable partial dentures, what is the function of indirect retainers?
• What is a common cause of denture fracture and how can it be prevented?
• What term describes fabricating entirely new dentures after the healing process is completed?
• Which option describes a more economical method of processing dentures requiring less time and space?
• What term refers to a denture fabrication step completed in the lab by the lab technician, such as articulation?
• What is a typical cleaning and finishing protocol for zirconia restorations before veneering or cementation?
• The term 'Completely Edentulous' describes which condition?
• Which impression material is described as flexible and is melted at approximately 209 degrees, cooled to 130-135 degrees and poured into a mold flask containing a waxed denture and cooled to a solid state?
• Why are lithium disilicate restorations favored for anterior crowns?
• Define tissue conditioning and its clinical relevance in denture fabrication.
• The mouth is separated into two ___.
• What term is used to make molds of patient arches for replication in gypsum?
• Which component of dentures is typically supplied on tooth cards of six anterior teeth or eight posterior teeth?
• Which statement best describes the dimensional stability of alginate compared with elastomeric impression materials?
• Polishing is primarily used to do what?
• What is the purpose of occlusion rims (trial occlusion rims) in denture fabrication?
• Why is a proper burnout temperature profile essential during casting?
• Finishing in denture fabrication involves which activity?
• What is the purpose of a trial insertion of a wax try-in appliance?
• What is the hard tissue colored part of an acrylic base denture called, formed from polymer powder and monomer liquid before setting?
• Which statement describes semi-adjustable articulators?
• What is an opaquer used for in porcelain-fused-to-metal restorations?
• Using the patient's existing denture as impression tray is most likely to produce what outcome?
• Which device keeps wax at a desirable working temperature for creating wax denture bases?
• The hinge axis reference used during maxillary mounting is determined during which procedure?
• In a dental laboratory, 3D printing is commonly used to produce which of the following?
• Facebow transfer is used for what purpose in prosthodontics?
• What term describes tapering projections upon the crown of a tooth?
• Sterilization considerations apply to acrylic denture flasks.
• Which device allows the full programming of condylar paths and incisal guidance?
• Which two infection control practices are essential in a dental laboratory, and why?
• What are the advantages and limitations of monolithic zirconia restorations?
• In a removable partial denture, what does the framework provide?
• What is the purpose of glazing and firing porcelain?
• Which describes the use of a hard liner in dentures?
• What is the purpose of an intentional chair-side reline in denture maintenance?
• Which procedure replaces an existing denture base with a new hard acrylic base?
• Which gypsum product is most appropriate for creating a durable, highly accurate die for crown and bridge fabrication?
• The term 'Some teeth are missing; maybe an entire arch' describes which condition?
• How does CAD/CAM technology influence modern dental laboratory workflows?
• In the context of shade matching, metamerism implies what?
• Which term describes the front surface of the anterior teeth?
• What is a key characteristic of monolithic zirconia crowns compared to layered crowns?
• How many quadrants are in the mouth?
• Which procedure involves applying an entirely new hard acrylic base to a denture?
• What is the primary purpose of investing wax patterns before casting a metallic framework?
• An imaginary line between the two centrals is called the ___.
• Which denture component is typically mounted on tooth cards and used to replace natural teeth?
• Which arrangement achieves bilateral balance or group function for posterior teeth?
• What term refers to replacing an existing full or partial denture?
• The front six teeth are called the ___.
• What is the main function of investment material in a metal casting process?
• Which statement best describes feldspathic porcelain?
• Name three common finishing steps for metal framework after casting.
• Outline the porcelain layering sequence typically used in porcelain-fused-to-metal restorations.
• How does CAD/CAM impact accuracy and efficiency in the dental laboratory?
• Metamerism refers to color appearance changes under different lighting conditions. Which statement best describes this phenomenon?
• Why is marginal fit critical for crowns and bridges?
• Differentiate between pressed ceramic and layered ceramic crowns in terms of fabrication and typical esthetic outcomes.
• What is the primary function of a die spacer in crown preparation?
• Which item is made so the dentist can register the patient's bite (relate the upper model to the lower model)?
• How do monolithic zirconia crowns differ from layered zirconia crowns?
• What is the difference between a master model and a working die in crown fabrication?
• What term describes a denture fabrication step completed in the operatory with the patient, such as impressions?
• What is the recommended sequence for cleaning a finished prosthesis to remove flux and debris?
• Which statement differentiates soldering from laser welding in metal framework fabrication?
• Which procedure fills the void between the denture and the arch with hard acrylic?
• What device trims stone models to neat appearance and easier to work off?
• Vertical Dimension of Occlusion (VDO) describes what?
• The surface of a tooth adjoining another tooth is called the ___.
• What is flasking in denture processing and what happens during boil-out?
• Which device holds water heated to a desired temperature and is filled with air to pressurize for curing acrylic?
• Which factor is most critical to prevent warping of acrylic denture flasks during processing and sterilization?
• Which step is commonly enabled by CAD/CAM technology in modern dental labs?
• What is a standard approach when digital scans fail to capture margins due to patient movement?
• Which step is essential in shade matching for accuracy?
• What roles do luting agents play in crown cementation, and what properties are desirable?
• Anterior teeth come on a ___.
• Why is proper isolation important during processing of prostheses?
• Surface away from the median line is known as which term?
• After casting, what is the next step in the process?
• Which material is commonly used for the denture base and is noted for good aesthetics and biocompatibility?
• If the die spacer thickness is too thick or too thin, what could happen?
• What storage condition best preserves the accuracy of elastomeric impressions?
• The lower jaw is formed by which bone?
• Which statement best describes adhesive resin cements in crown seating?
• In crown margin design, what is a chamfer and when is it typically used?
• Which procedure is performed in the lab by the technician, such as articulation?
• How should elastomeric impression materials be stored to maintain dimensional stability?
• What distinguishes conventional denture fabrication from immediate dentures in the lab workflow?
• What is a consideration when adopting CAD/CAM technology in a dental lab?
• What are the standard autoclave cycles used for laboratory sterilization?
• Why is coefficient of thermal expansion (CTE) matching between alloy, porcelain, and substrate critical?
• Dental stone and plaster are powders that when mixed with water will harden (set) into an irreversible solid mass. What is the general term for these materials?
• Which term refers to the stone or plastic replica itself?
• Which statement best describes total-etch resin cements when bonding to all-ceramic crowns?
• Which property is essential for initial retention during crown seating?
• Compare feldspathic porcelain and lithium disilicate regarding bonding and strength.
• Which statement best describes Hand Articulated articulation in denture fabrication?
• How does the heat source differ between soldering and laser welding for metal framework?
• Which term refers to a prosthetic device that remains permanently cemented in place?
• What are the primary goals of finishing and polishing dental prostheses?
• ASAP impression approach uses what method?
• What is denture casting porosity and how can it be avoided?
• What is the role of a bite fork or 'occlusal registration' in taking bite records?
• Which model is poured/trimmed after the rubber base impression (or alginate if preliminary impression was sufficient) has been taken?
• The back ten teeth are called the ___.
• Which impression is taken with a rubber base material by the dentist?
• Why is proper sprue design critical in the lost-wax casting process?
• Type IV die stone is characterized by which property?
• Which term describes the final stage where the model is poured and trimmed after an impression?