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Quizzes > Quizzes for Business > Healthcare

Dental Preclinical Knowledge Test Quiz

Assess Your Preclinical Dental Expertise Now

Difficulty: Moderate
Questions: 20
Learning OutcomesStudy Material
Colorful paper art showcasing a dental preclinical knowledge test quiz theme

Ready to challenge yourself with a comprehensive preclinical dental quiz? This Dental Preclinical Knowledge Test is ideal for dental students and educators looking to assess core concepts, from basic anatomy to material science. Explore the Dental Anatomy Quiz for focused practice, or refine your clinical insight with the Dental Health Knowledge Quiz . All questions can be freely modified in the editor to tailor the difficulty and content to your needs. Feel free to browse more quizzes for additional study resources.

Which part of a tooth anchors it to the alveolar bone?
Enamel
Dentin
Cementum
Pulp
Cementum covers the root surface and attaches via the periodontal ligament to the alveolar bone, anchoring the tooth. It is the mineralized tissue that connects root dentin to ligament fibers.
Which dental handpiece is designed for cutting enamel at high speeds?
Slow-speed handpiece
High-speed handpiece
Electric handpiece
Sonic handpiece
High-speed handpieces operate between 200,000 and 400,000 rpm and are ideal for cutting enamel efficiently. They commonly use water spray to reduce heat generation during cutting.
Which property describes a material's resistance to flow?
Hardness
Viscosity
Elasticity
Density
Viscosity is the measure of a fluid's resistance to flow and determines how materials like alginates and cements handle seating and detail reproduction. Higher viscosity means lower flowability.
Which sterilization method uses steam under pressure?
Dry-heat sterilization
Chemical vapor sterilization
Autoclave
Ultraviolet radiation
Autoclaving uses saturated steam under pressure, typically at 121°C, to kill all forms of microbial life including spores. It is the gold standard for sterilizing heat-resistant dental instruments.
In FDI notation, what is the lower right first molar?
36
46
16
26
FDI notation uses the first digit to indicate the quadrant and the second digit for tooth position. '4' denotes the lower right quadrant and '6' indicates the first molar.
Which excavator is most appropriate for removing soft carious dentin?
Spoon excavator
Hatchet
Angle former
Spade
The spoon excavator has a curved blade designed to scoop out soft, infected dentin while preserving healthy tissue. Hatchets and formers are used mainly for enamel or wall refinement.
Which bur is primarily used to establish the initial outline form in a cavity preparation?
Round bur
Fissure bur
Diamond bur
Finishing bur
Round burs are used to create the initial entry and outline form by cutting both enamel and dentin efficiently. Fissure and finishing burs follow to refine walls and margins.
At 121°C, a standard autoclave cycle for steam sterilization typically requires how long?
5 minutes
15 minutes
30 minutes
60 minutes
The typical sterilization cycle at 121°C under 15 psi pressure is 15 minutes to ensure complete destruction of microorganisms including spores. Longer times are used at lower temperatures.
Which gypsum product is commonly used for diagnostic study casts?
Type II dental plaster
Type III dental stone
Type IV die stone
Type V high-strength stone
Type II dental plaster is porous and has lower compressive strength, making it suitable for diagnostic casts and study models. Higher types are used for dies and casts requiring greater detail and strength.
Which articulator setting records the horizontal movement of the condyle during lateral excursions?
Protrusive guide
Bennett angle
Incisal guide
Condylar inclination
The Bennett angle measures the lateral shift of the non-working condyle during excursions. Condylar inclination records the forward movement on protrusion.
In patients with high caries risk and hyposalivation, which restorative material releases fluoride and bonds chemically?
Composite resin
Glass ionomer cement
Dental amalgam
Zinc phosphate cement
Glass ionomer cements release fluoride over time and chemically bond to tooth structure, making them ideal for patients with high caries risk and low saliva flow. Composites require adhesive systems and do not release fluoride.
Which method confirms sterilization efficacy by indicating viable microorganisms have been killed?
Chemical indicator tape
Bowie-Dick test
Biological spore test
Physical cycle printout
A biological spore test uses bacterial spores to verify that conditions for sterilization were sufficient to kill resistant forms of microbes. Chemical indicators only confirm exposure to parameters, not actual kill.
To minimize polymerization shrinkage stress in composite restorations, what technique is recommended?
Bulk-fill placement
Incremental layering
High-intensity curing
Overfilling and trimming
Incremental layering reduces polymerization stress by limiting the volume of composite that shrinks at one time. Bulk-filling larger volumes increases shrinkage force against cavity walls.
After removing an impression from a patient, which step reduces cross-contamination before pouring a cast?
Rinse under running water and spray with disinfectant
Immersion in cold sterilization for 24 hours
Air-dry and proceed immediately
Place in ultrasonic cleaner only
Rinsing removes debris and saliva, and spraying with an appropriate disinfectant prevents cross-contamination before pouring. Prolonged immersion can distort most impression materials.
For mounting casts on a semi-adjustable articulator, which record is needed to orient the maxilla to the hinge axis?
Bite registration
Face-bow transfer
Photographic record
Periapical radiograph
The face-bow transfer records the spatial relationship of the maxilla to the temporomandibular joints and transfers it to the articulator. Bite registrations alone do not orient the hinge axis.
For porcelain-fused-to-metal (PFM) crown preparations on a typodont, which marginal finish line is recommended to provide a defined porcelain butt joint?
Feather-edge
Chamfer
Shoulder with bevel
Bevelled chamfer
A shoulder with bevel provides a 90° ledge for porcelain support at the margin while allowing a smooth transition onto metal. This design prevents porcelain fractures and ensures marginal integrity.
Which analytical technique directly measures the degree of monomer-to-polymer conversion in resin composites?
Microhardness testing
Fourier-transform infrared spectroscopy (FTIR)
Scanning electron microscopy (SEM)
Thermogravimetric analysis (TGA)
FTIR spectroscopy can quantify the decrease in characteristic monomer peaks and the increase in polymer peaks, providing a direct measure of degree of conversion. Hardness tests are indirect assessments.
What is the ideal total occlusal convergence angle for full crown preparations to maximize both retention and resistance form?
2 degrees
10 degrees
20 degrees
30 degrees
A total occlusal convergence of 6 - 10 degrees is recommended to balance retention and ease of seating. Angles greater than 12 degrees compromise retention, while very low angles are difficult to achieve clinically.
What is the approximate average maximum bite force recorded in human molars?
100 N
300 N
500 N
1000 N
Studies report average maximum bite forces in the molar region around 300 - 700 Newtons, with an overall mean near 500 N. Values vary by age, gender, and individual anatomy.
If a chemical indicator tape on an autoclave load shows no color change after the cycle, what is the appropriate next step?
Release the instruments for clinical use
Repeat the sterilization cycle
Wipe the tape clean and interpret again
Switch immediately to dry-heat sterilization
No color change indicates parameters for sterilization were not met. The load must be reprocessed under correct conditions before instruments can be used safely.
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Learning Outcomes

  1. Analyse dental anatomy and preclinical procedures effectively.
  2. Identify key preclinical instrumentation and their functions.
  3. Demonstrate understanding of dental material properties.
  4. Apply infection control protocols in lab scenarios.
  5. Evaluate patient simulation data for treatment planning.
  6. Master technique selection for preclinical assessments.

Cheat Sheet

  1. Tooth Morphology Mastery - Dive into the unique shapes and functions of incisors, canines, premolars, and molars with a curious mindset - soon you'll identify and describe each tooth like a pro. This foundation supercharges your diagnostic accuracy and treatment planning. University of Michigan Dental Anatomy Resources
  2. Dental Instruments Decoded - Get up close with explorers, scalers, mirrors, and more, learning exactly when and how to wield each tool for maximum efficiency. Mastering these instruments is like leveling up in a dental video game - faster, safer, and more precise procedures. UCSF Dental Instruments Guide
  3. Dental Materials Showcase - Explore the strengths, durability, and biocompatibility of amalgam, composite resins, and glass ionomers so you can pick the perfect material for every case. Understanding this "ingredient list" makes you the ultimate mixologist in the operatory. ADA Dental Materials Information
  4. Infection Control Fundamentals - Brush up on hand hygiene, sterilization magic, and PPE protocols to keep cross-contamination at bay and everyone safe. Think of it as your personal hygiene shield - protecting patients and practitioners alike. CDC Infection Control Guidelines
  5. Interpreting Patient Data - Hone your skills reading radiographs and dental casts to craft bulletproof treatment plans. The more you practice, the sharper your diagnostic superhero senses become. University of Iowa Radiographic Interpretation
  6. Preclinical Practice Power-Ups - From cavity prep and crown crafting to perfect impressions, hands-on drills build your confidence and finesse. Consistent practice today means smooth sailing in real-life clinics tomorrow. University of Toronto Preclinical Tutorials
  7. Occlusion Essentials - Unlock the secrets of how teeth meet and function together, a key ingredient for flawless restorative and prosthetic work. A solid grasp of occlusal concepts is your ticket to balanced bites and happy patients. UW Occlusion Resources
  8. Impression Technique Tricks - Master the art of selecting and handling materials to capture ultra-precise molds for crowns, bridges, and more. Perfect impressions are the secret sauce for restorations that fit like a glove. UNC Impression Procedures
  9. Head & Neck Anatomy Adventure - Journey through the nerves, vessels, and muscles critical to dental procedures - knowing these landmarks helps you avoid complications. Think of this as a GPS for your clinical toolkit. Pitt Head & Neck Anatomy
  10. Ergonomics for Happy Practitioners - Learn posture hacks and workstation setups that prevent aches, strains, and long-term injuries. Good ergonomics is the key to a thriving, pain-free dental career. ADA Ergonomics Guidelines
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