Preclinical Dentistry Exam Practice Tests
Course Introduction
Preclinical Dentistry is a foundational course designed to introduce students to the basic principles and skills necessary for clinical dental practice. Through a combination of lectures, laboratory sessions, and hands-on exercises, students develop proficiency in dental anatomy, cavity preparation, restorative procedures, infection control, and the use of dental materials and instruments. Emphasis is placed on manual dexterity, precision, and the application of theoretical concepts in simulated settings, preparing students for the transition to patient care in clinical environments.
Recommended Textbook
Dental Materials Properties and Manipulation 10th Edition by John M. Powers
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15 Chapters
584 Verified Questions
584 Flashcards
Source URL: https://quizplus.com/study-set/1754
Page 2
Chapter 1: Introduction to Restorative Dental Materials
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40 Verified Questions
40 Flashcards
Source URL: https://quizplus.com/quiz/34956
Sample Questions
Q1) Which of the following is(are)examples of indirect restorations?
A) Ceramic inlay
B) All-ceramic crown
C) Ceramic-alloy crown
D) A, B, and C
E) A and C
Answer: D
Q2) Which restoration is appropriate for an edentulous patient?
A) Three-unit fixed partial denture
B) Removable partial denture
C) Complete denture
D) Acid-etched resin-bonded bridge
Answer: C
Q3) Which of the following types of implants are placed into but not through bone?
A) Endosseous
B) Transosseous
C) Subperiosteal
D) Mucosal
Answer: A
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Chapter 2: Properties of Materials
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43 Verified Questions
43 Flashcards
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Sample Questions
Q1) Cavity varnishes and liners are ineffective as thermal insulators because they:
A) have high thermal conductivity.
B) have a high coefficient of thermal expansion.
C) have a low coefficient of thermal expansion.
D) are used in thin layers.
Answer: D
Q2) For a given force,the _____ the area over which it is applied,the _____ the value of the stress.
A) smaller; smaller
B) smaller; larger
C) larger; larger
D) A and C
E) B and C
Answer: B
Q3) The hardness of a dental material is reported in:
A) Knoop hardness.
B) nano-indentation.
C) diamond indenter.
D) dynamic properties.
Answer: A
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Chapter 3: Preventive Dental Materials
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39 Verified Questions
39 Flashcards
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Sample Questions
Q1) Which type of fluoride will not etch restorations?
A) Acidulated phosphate fluoride
B) Stannous fluoride
C) Sodium fluoride
D) A and B
E) B and C
Answer: C
Q2) A mouth protector thickness of _____ mm of material over incisal edges and cusps of teeth is recommended for best protection and acceptable comfort.
A) 0.5
B) 1.0
C) 2.0
D) 4.0
E) 8.0
Answer: D
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Chapter 4: Direct Esthetic Restorative Materials
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40 Verified Questions
40 Flashcards
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Sample Questions
Q1) Which type of composite has the smallest filler particle size?
A) Microhybrid
B) Microfilled
C) Nanofilled
D) Packable
E) Flowable
Q2) Which type of direct composite has a wear rate most similar to dental amalgam?
A) Flowable composite
B) Packable composite
C) Microhybrid composite
D) Microfilled composite
Q3) In the event that an esthetic material is required for a direct,posterior,load-bearing restoration,______ composite is the material of choice.
A) packable
B) flowable
C) laboratory
D) core
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6
Chapter 5: Dental Amalgam
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38 Verified Questions
38 Flashcards
Source URL: https://quizplus.com/quiz/34960
Sample Questions
Q1) Which of the following is a correct assessment regarding mercury vapor in amalgam?
A) Higher release may occur during the setting reaction.
B) Higher release may occur during removal of old amalgams.
C) Higher release may occur if the amalgam is heated above 80° C.
D) All of the above are correct statements.
Q2) Which of the following is a component of good mercury hygiene?
A) Handling it only with gloves on
B) Using a squeeze cloth to remove excess mercury
C) Using premixed, sealed capsules
D) Polishing using a dry technique
Q3) Insufficient strength in a dental amalgam may lead to:
A) tarnish.
B) fracture.
C) condensation.
D) expansion.
Q4) Amalgam should be placed in the cavity preparation by _____ increments.
A) large to small
B) consistent size
C) small to large
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Chapter 6: Finishing, polishing, and Cleansing Materials
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38 Verified Questions
38 Flashcards
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Sample Questions
Q1) Which of the following abrasive agents commonly used in dentistry for polishing and cleansing is derived from diatoms?
A) Calcite
B) Kieselguhr
C) Pumice
D) Rouge
Q2) _____ abrasive disks are beige.
A) Aluminum oxide
B) Garnet
C) Cuttle
D) Silicon carbide
Q3) For an abrasive,the higher the speed,the greater the frequency per unit of time the particle contacts the surface.In a clinical situation it is easiest to control pressure rather than speed to vary the rate of abrasion.
A) Both statements are true.
B) Both statements are false.
C) The first statement is true; the second statement is false.
D) The first statement is false; the second statement is true.
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8
Chapter 7: Cements
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42 Verified Questions
42 Flashcards
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Sample Questions
Q1) Which of the following high-strength bases has the highest modulus of elasticity?
A) Glass ionomer
B) Resin modified glass ionomer
C) Zinc phosphate
D) Zinc polycarboxylate
Q2) Which type of cement for final cementation has the highest compressive strength?
A) Compomer
B) Hybrid ionomer
C) Glass ionomer
D) Zinc phosphate
E) Zinc polycarboxylate
Q3) Which of the following statements is(are)true of zinc polycarboxylate cement?
A) It is stronger than zinc phosphate cement.
B) It is more irritating to the pulp than zinc phosphate cement.
C) It is less irritating to the pulp than zinc phosphate cement.
D) A and B are both true.
E) A and C are both true.
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Chapter 8: Impression Materials
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38 Verified Questions
38 Flashcards
Source URL: https://quizplus.com/quiz/34963
Sample Questions
Q1) An accepted method for modifying an impression tray would include:
A) applying rope wax to the flanges.
B) heating the tray to alter the configuration.
C) adding compound to the edges.
D) none of the above.
Q2) Alginate hydrocolloid is supplied:
A) in compules.
B) in two syringes to be mixed together.
C) in two tubs as a putty system for hand kneading.
D) as a thixotropic gel.
E) as a powder.
Q3) The impression gives a _____ reproduction of tissue.A _____ reproduction is obtained by pouring dental stone or other suitable material into the impression and allowing it to harden.
A) negative; negative
B) positive; positive
C) negative; positive
D) positive; negative
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Chapter 9: Model and Die Materials
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39 Verified Questions
39 Flashcards
Source URL: https://quizplus.com/quiz/34964
Sample Questions
Q1) When the alginate dries out before it is poured:
A) the alginate will rob the gypsum mix of some of its water.
B) the edges of the alginate may become hard and inflexible.
C) the impression will be distorted.
D) A, B, and C are correct.
E) A and C are correct.
Q2) Which of the following types of gypsum products is also known as die stone?
A) Impression plaster
B) Model plaster
C) Dental stone
D) High-strength/low-expansion dental stone
E) High-strength/high-expansion dental stone
Q3) The initial setting time for gypsum is defined as the time the:
A) powder is added to the water until mixing is complete.
B) powder is added to the water until the pour is complete.
C) pour begins until the pour is complete.
D) powder is added to the water until the material cannot be used.
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11
Chapter 10: Waxes
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37 Verified Questions
37 Flashcards
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Sample Questions
Q1) Which of the following waxes are categorized as processing waxes?
A) Boxing wax
B) Beading wax
C) Sticky wax
D) A, B, and C
E) A and C
Q2) Which type of wax may be molded around an unpoured impression to help contain the stone when it is vibrated into the impression?
A) Inlay wax
B) Sticky wax
C) Boxing wax
D) Corrective impression wax
Q3) The purpose of sticky wax is to:
A) correct an original impression.
B) gain accurate articulation.
C) temporarily hold metal together.
D) maintain a specific pattern.
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Chapter 11: Casting Alloys, wrought Alloys, and Solders
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38 Verified Questions
38 Flashcards
Source URL: https://quizplus.com/quiz/34966
Sample Questions
Q1) Which of the following statements is true concerning noble and base metals?
A) Seven noble metals are commonly used in dental casting alloys.
B) Silver will not corrode in the oral environment.
C) The term precious metal is preferred over noble metal.
D) Base metals are viewed in dentistry as bad metals and are not used in dental restorations.
E) Base metals are required in dental alloys for strength, flexibility, and wear resistance.
Q2) Silver is added to casting alloy to:
A) prevent oxidation.
B) enhance bond strength.
C) harden the gold.
D) prevent tarnish.
Q3) The color of an alloy is a good predictor of its composition or other properties.Yellow alloys contain gold.
A) Statement 1 is correct; statement 2 is correct.
B) Statement 1 is correct; statement 2 is incorrect.
C) Statement 1 is incorrect; statement 2 is correct.
D) Statement 1 is incorrect; statement 2 is incorrect.
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Page 13
Chapter 12: Casting and Soldering
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38 Verified Questions
38 Flashcards
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Sample Questions
Q1) The amount of thermal expansion of the investment is regulated by:
A) type of silica refractory used.
B) temperature used during burnout.
C) type of inlay wax used.
D) A and B.
E) B and C.
Q2) Pickling a casting:
A) removes surface oxides.
B) uses hot calcium carbonate.
C) uses hot sulfuric acid.
D) A and B.
E) A and C.
Q3) The total expansion of the investment is the sum of the hygroscopic and thermal expansions.Investments rely primarily on hygroscopic expansion to compensate for casting shrinkage of the metal.
A) Both statements are true.
B) Both statements are false.
C) The first statement is true; the second statement is false.
D) The first statement is false; the second statement is true.
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Page 14
Chapter 13: Polymers in Prosthodontics
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38 Verified Questions
38 Flashcards
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Sample Questions
Q1) Orthodontic appliances use _____-linked poly(methyl methacrylate)homopolymer.
A) unfilled, non-cross
B) unfilled, cross
C) filled, non-cross
D) filled, cross
Q2) Which of the following statements is correct regarding addition polymerization?
A) It has a high exothermic reaction.
B) It has a low exothermic reaction.
C) It does not create by-products.
D) All of the above are correct.
E) Only A and C are correct.
Q3) The polymerization reaction shrinkage of acrylics approaches _____ vol %.
A) 1
B) 3
C) 6
D) 12
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Chapter 14: Dental Ceramics
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38 Verified Questions
38 Flashcards
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Sample Questions
Q1) Ceramics:
A) are opaque.
B) are translucent.
C) have low corrosion and wear.
D) A and C.
E) B and C.
Q2) During firing,the particles of ceramic melt together at their edges in a process called:
A) condensation.
B) sintering.
C) abfraction.
D) rheology.
Q3) High-fusing types of dental ceramics are used to:
A) fabricate porcelain-jacket crowns.
B) fabricate some all-ceramic restorations.
C) make ceramic-alloy restorations.
D) make some all-ceramic restorations.
E) make denture teeth.
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Chapter 15: Dental Implants
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38 Verified Questions
38 Flashcards
Source URL: https://quizplus.com/quiz/34970
Sample Questions
Q1) Burs for preparation of the implant site are composed of special alloys of:
A) stainless steel.
B) nickel.
C) titanium.
D) platinum.
Q2) Peri-implantitis is caused by:
A) high occlusal forces.
B) ineffective plaque removal.
C) poor osseointegration.
D) horizontal bone loss.
Q3) Increasing amounts of oxygen increase the _____ of commercially pure titanium alloys used for endosseous implants.
A) strength
B) ductility
C) modulus of elasticity
D) density
E) melting range
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