Prosthodontics Final Exam
Course Introduction
Prosthodontics is a specialized field of dentistry focused on the diagnosis, treatment planning, rehabilitation, and maintenance of oral function, comfort, appearance, and health in patients with missing or deficient teeth and/or oral and maxillofacial tissues. This course covers the principles and techniques involved in designing, fabricating, and fitting artificial replacements such as crowns, bridges, dentures, and dental implants. Emphasis is placed on understanding the biological, mechanical, and aesthetic considerations that influence the choice and success of prosthodontic treatments, as well as the integration of digital technologies and interdisciplinary care.
Recommended Textbook
Dental Materials 3rd Edition by W. Stephan Eakle DDS FADM
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Chapter 1: Introduction to Dental Materials
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Sample Questions
Q1) What was the "Amalgam War" fought over?
A) Mining rights in states in the Western region of the United States
B) The price of silver in relation to tin and zinc
C) The value and safety of silver dental amalgam
D) Patent issues between France and England
Answer: C
Q2) Which of the following statements is true concerning the American Dental Association (ADA)Seal?
A) All dental products qualify for the Seal.
B) It helps consumers make informed decisions about the safety and efficiency of products.
C) The ADA Seal is usually awarded for the life of the product.
D) Once a product has been accepted,it does not need to be reevaluated if its composition changes.
Answer: B
Q3) Regulation over dental devices
A)Food and Drug Administration
B)American Dental Association
C)International Standards Organization
Answer: A
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Chapter 2: Oral Environment and Patient Considerations
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Sample Questions
Q1) Which material listed would show the lowest level of solubility?
A) Amalgam
B) Composite resin
C) Porcelain
D) Cement
Answer: C
Q2) Microleakage into the interface between tooth structure and restorative material is responsible for much of the _____ observed following tooth restoration.
1)recurrent decay
2)marginal staining
3)postoperative sensitivity
4)tarnish
A) 1,2,3,4
B) 1,2,3
C) 2,3,4
D) 1,2
Answer: B
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Chapter 3: Physical and Mechanical Properties of Dental Materials
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Q1) Which type of bond occurs when two atoms share electrons in their outer shell,creating full shells for both?
A) Ionic bond
B) Covalent bond
C) Metallic bond
D) Hydrogen bond
Answer: B
Q2) Which of the following statements is true concerning desirable properties of dental materials?
A) The maximum amount of stress a material can withstand without breaking is known as the proportional limit.
B) Stiffer materials have a high modulus of elasticity.
C) Resilience is the ability of a material to resist fracture.
D) In most cases,metals tend to be brittle and ceramics tend to be ductile and malleable.
Answer: B
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Chapter 4: General Handling and Safety of Dental Materials
in the Dental Office
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Sample Questions
Q1) Which particulates are smaller than 5 microns?
A) Dust
B) Mold
C) Splatter
D) Aerosols
Q2) Who has the responsibility of assessing hazardous chemicals and then passing the information to consumers?
A) Occupational Safety and Health Administration
B) Organization for Safety and Asepsis Procedures
C) Centers for Disease Control and Prevention
D) Chemical manufacturers
Q3) Which of the following are considered to be personal protective equipment (PPE)?
A) Protective shields on model trimmers and on collection bins for lathes
B) Dust or surgical masks,eyewear,gowns,and hair coverings or tiebacks when appropriate
C) Surface and immersion disinfectants
D) Plastic wraps and covers
Q4) What are the four components of the chemical training program for employees?
Page 6
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Chapter 5: Principles of Bonding
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Sample Questions
Q1) Which of the following correctly represents the sequence for tooth preparation before cementation of a post in an endodontically treated tooth?
1)Self-curing or dual-curing composite resin cement is applied to both the canal and the post.
2)A dentin primer is placed in the canal and air-dried to drive off any remaining water and the volatile solvents in the primer.
3)The prepared canal is etched with phosphoric acid,and then the acid is rinsed off.
4)Excess water is removed with a paper point.
A) 1,2,3,4
B) 1,2,4,3
C) 3,4,2,1
D) 4,3,1,2
Q2) What are the three modes of curing for resin bonding agents?
Q3) The primer portion of the dental bonding agent is _____ to water.
A) hydrophilic
B) hydrophobic
C) hydroelectric
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Chapter 6: Composites, glass Ionomers, and Compomers
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Sample Questions
Q1) What is the recommended curing time for the proximal box of a class II composite restoration?
A) 10 to 30 seconds
B) 20 to 40 seconds
C) 40 to 60 seconds
D) 60 to 80 seconds
Q2) Which of the following is correct regarding polymerization shrinkage of composite resin restorations?
A) Microfills and flowables shrink less than hybrids and packables.
B) The greater the resin content of the composite,the less will be the shrinkage.
C) Recent research indicates that the composite resin material does not shrink toward the light.
D) When composite is placed and cured in a preparation that has two opposing walls,the composite will expand and push against the walls.
Q3) List the three different types of composite resins and describe how they each polymerize.
Q4) List the advantages and disadvantages of glass ionomer cements.
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Chapter 7: Preventive and Desensitizing Materials
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Sample Questions
Q1) Which of the following is the most commonly noted side effect of the use of chlorhexidine gluconate as an antibacterial mouth rinse?
A) Leukoplakia
B) Brown stain
C) Geographic tongue
D) Median rhomboid glossitis
Q2) Self-applied topical gel that may cause some staining of the surfaces of the teeth and that delivers less fluoride ion to the teeth
A)Acidulated phosphate fluoride (APF)
B)Neutral sodium fluoride (NaF)
C)1.1% Neutral sodium fluoride 5000 ppm restorations made of porcelain,composite fluoride
D)0.4% Stannous fluoride 900 ppm fluoride
E)Fluoride varnish 5.0% sodium fluoride than the other choice of self-applied topical gel
Q3) The use of a bonding agent with pit and fissure sealants _____ their longevity.
A) decreases
B) increases
C) has no effect on
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Chapter 8: Teeth Whitening Materials and Procedures
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Sample Questions
Q1) Which stains have the best chance of removal when a bleaching product is used?
A) Iron
B) Food
C) Coffee
D) Antibiotics
Q2) Which of the following statements is true regarding home bleaching prescribed by the dentist?
A) The material consists of clear,flexible strips containing a peroxide gel that are adapted over the teeth and worn for 30 minutes at a time once or twice a day.
B) Only the anterior six teeth are covered.
C) The gel is placed in a custom-formed soft,thin plastic tray and is worn by the patient for periods as short as 30 minutes twice daily or as long as overnight.
D) The home bleaching process is less effective than the in-office process.
Q3) In addition to pumice,what substance is used to perform enamel microabrasion?
A) Carbamide peroxide
B) Hydrogen peroxide
C) Hydrochloric acid
D) Phosphoric acid
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Chapter 9: Dental Ceramics
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Sample Questions
Q1) Describe the different techniques for fabrication of ceramic restorations.
Q2) A CAD/CAM machined crown uses an optical scanner to do what?
A) Design the prep
B) Design the crown
C) Make the temporary
D) Take the impression
Q3) Which of the following is true of computer-aiding machining for crown and bridge techniques?
A) It is available only for fabrication of porcelain veneers.
B) No die needs to be poured,and no temporary crown is necessary.
C) A porous ceramic core is infiltrated with molten glass by capillary action.
D) Ceramic powder is mixed with a water-based liquid to form a mass that is pressed onto a porous refractory die.
Q4) A lighter color
A)Long wavelength
B)Short wavelength
C)High value
D)Low value
E)High chroma
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Chapter 10: Dental Amalgam
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Sample Questions
Q1) List the main components of amalgam alloy and describe their function.
Q2) High-copper amalgams do not have a _____ phase and are superior in their clinical performance to low-copper amalgams.
A) gamma
B) gamma-1
C) gamma-2
D) gamma-1 or gamma-2
Q3) When spherical high-copper dental amalgam alloys are contrasted with admixed dental amalgam alloys,the spherical alloy:
A) needs approximately 10% more mercury than the admixed alloy for the amalgamation process.
B) has very little resistance to condensation into the cavity preparation and feels soft compared with an admixed amalgam.
C) displaces a matrix band and keeps it in contact with the adjacent tooth in class II preparations better than admixed amalgams.
D) has lower 1-hour and 24-hour compressive strengths than admixed amalgams.
Q4) List the advantages and disadvantages of amalgam.
Q5) Describe the different particle shapes in amalgam alloys.
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Chapter 11: Casting Metals, solders, and Wrought Metal
Alloys
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Sample Questions
Q1) Precious metal
A)Alloy composed of non-noble metals
B)A mixture of two or more metals
C)Alloy containing at least 60% noble metals,40% of which must be gold
D)Classification of metal based on its high cost
E)Alloy composed of metals that do not corrode readily
Q2) Which of the following represents the correct order for application of the porcelain layers during the creation of a porcelain-bonded-to-metal crown?
1)Incisal porcelain
2)Opaque porcelain
3)Body porcelain
A) 1,2,3
B) 1,3,2
C) 2,3,1
D) 2,1,3
Q3) What is the primary purpose of the endodontic post?
A) Reinforce the tooth
B) Bond with the crown
C) Retain the core buildup
D) Fill the access for strength
Page 13
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Chapter 12: Dental Implants
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Sample Questions
Q1) Failure of the implant that occurs after the initial integration is often caused by which condition(s)?
1)Bacterial infection extending from the peri-implant tissues into the bone
2)Generation of excessive heat when the implant hole is drilled into the bone
3)Overloading of the implant during function
A) 1,2,3
B) 1,2
C) 1,3
D) 2
Q2) What is the difference in implant success rates between the maxilla and mandible attributed to?
A) Bone density
B) Residual ridge
C) The patient's age
D) There is no difference.
Q3) How often should oral hygiene for implant patients be monitored?
A) Every 3 to 4 months
B) Every 6 months
C) Annually
D) At each visit
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Chapter 13: Abrasion, finishing, and Polishing
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Sample Questions
Q1) Tin oxide
A)An extremely fine abrasive used extensively as a final polishing agent for enamel and restorations
B)A natural abrasive composed of quartz and silica
C)Volcanic silica manufactured as a loose abrasive
D)A synthetic material that produces an extremely hard and efficient abrasive material
E)A synthetic abrasive;the powder form is used in sandblasting restorations in preparation for cementation
Q2) Which of the following is not a benefit of polishing a restoration?
A) Smooth cavosurface margins
B) Decreased biofilm attachment
C) Decreased tarnish and corrosion
D) Increased attrition of tooth structure
Q3) Which statement explains how fine-particle diamonds are supplied?
A) Bonded to rotary cutting shanks or disks
B) Found in designs ranging from 7 to 30 cutting flutes
C) Supplied on rotary disks and handheld finishing strips
D) Supplied in a paste for polishing composite and porcelain restorations
Q4) Describe the rationale for selective polishing.
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Chapter 14: Dental Cement
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Sample Questions
Q1) Which of the following statements is true concerning the acidity of zinc phosphate cement?
A) Zinc phosphate cement has a high acidity throughout the time of service.
B) Zinc phosphate cement is incompatible with dentin bonding systems.
C) Pulpal protection is not recommended in deep cavity preparations when zinc phosphate cement is used,as the low acidity soothes the pulp.
D) The acidity of zinc phosphate cement is initially low but becomes neutral within 24 to 28 hours.
Q2) A major concern regarding many cements is their pH.What is the reason for this concern?
A) Acids in the mixture
B) Chemical reactions
C) Preservatives
D) None of the above
Q3) When is zinc polycarboxylate cement no longer usable?
A) Has a creamy appearance
B) Loses its gloss and becomes stringy
C) Is mixed for longer than 10 seconds
D) Becomes oily on the surface because of the oxygen-inhibited layer
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Page 16
Chapter 15: Impression Materials
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Sample Questions
Q1) Of the items listed,which would not be made from an alginate impression?
A) Mouth guard
B) Bleaching tray
C) Retainer
D) Onlay
Q2) Impressions taken with polyether should be poured within what time period?
A) 30 minutes
B) 1 hour
C) 1 day
D) 1 week
Q3) List and describe the different types of impression materials suitable for crown and bridge procedures.
Q4) _____ gloves should be used when mixing PVS putty.
A) Utility
B) Nitrile
C) Latex
D) Vinyl
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Chapter 16: Gypsum and Wax Products
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Sample Questions
Q1) Which of the following dental gypsum products will require the least water for mixing and will have the highest final density?
A) Impression plaster (Type I)
B) Model plaster (Type II)
C) Dental stone (Type III)
D) Dental stone,high strength (Type IV)
Q2) Which of the following represents the correct sequence for creation of a casting using the lost wax technique?
1)The pattern and sprue are encased in an investment ring.
2)A wax or plastic sprue is attached to the pattern.
3)A wax pattern of the restoration is carved on the die.
4)The enclosed pattern and sprue are heated in a burnout oven at high temperatures.
A) 3,1,2,4
B) 3,2,1,4
C) 2,3,1,4
D) 3,2,4,1
Q3) List and describe the use of the different types of gypsum products used in dentistry.
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Chapter 17: Polymers for Prosthetic Dentistry
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Q1) What is the polymerized acrylic resin formed when a liquid monomer is mixed with a powder of small polymer beads?
A) BIS-GMA
B) Benzoyl peroxide
C) Poly (ethyl methacrylate)
D) Poly (methyl methacrylate)
Q2) Which of the following is true of the chairside reline?
A) It utilizes an indirect technique in which an impression of the tissues is made inside the existing denture and a cast is made from this impression.
B) The reline material is applied to the primed denture base,and the denture is reseated in the patient's mouth for border molding.
C) An indexing instrument is used to establish the relationship between the cast and the denture.
D) The lining material is heat- and pressure-processed in the denture base.
Q3) Describe the process of addition polymerization.
Q4) Describe how a denture is fabricated using heat-cured resin.
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Chapter 18: Provisional Restorations
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Q1) Which of the following is the most common choice of matrix or template material for multi-unit and indirect provisional techniques?
A) Thermoplastic wax
B) Silicone impression materials
C) Alginate
D) Vacuum-formed plastic
Q2) Which of the following are advantages of composite provisional materials in contrast to acrylic provisional materials?
1)High shrinkage during curing
2)High heat release during curing
3)More wear
4)Biocompatibility
A) 1,2,3,4
B) 2,3,4
C) 3,4
D) 4
Q3) List and describe the four criteria for provisional coverage.
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Chapter 19: Preventive and Corrective Oral Appliances
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Sample Questions
Q1) What instructions would be given to a patient who receives a soft sports or bruxism guard?
Q2) Which type of sports mouth guard is most effective?
A) Stock
B) Custom-fit
C) Boil and bite
D) They are all equally effective.
Q3) Hard acrylic guards are usually fabricated in the dental _____ and usually require _____ time to adjust than guards made from soft thermoplastic sheets.
A) office;more
B) office;less
C) laboratory;more
D) laboratory;less
Q4) In what situation would the dentist prescribe a night guard for a patient?
A) If the patient has sleep apnea
B) If there are signs of grinding
C) If there is an unexplained tooth fracture,wear,or chips
D) Only b and c are correct.
E) All are correct.
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