Restorative Dentistry
Final Test Solutions
Course Introduction
Restorative Dentistry focuses on the diagnosis, prevention, and management of diseases and injuries affecting the teeth, oral cavity, and supporting structures. The course covers key concepts related to the restoration of teeth to their proper form, function, and aesthetics, using a wide range of materials and techniques such as fillings, crowns, bridges, and veneers. Emphasis is placed on the principles of cavity preparation, material selection, biomaterials science, and the integration of modern technologies to promote optimal patient outcomes. Through theoretical knowledge and practical exercises, students gain the skills necessary to restore dental health and improve patients' quality of life.
Recommended Textbook
Dental Materials 3rd Edition by W.
Stephan Eakle DDS FADM
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643 Verified Questions
643 Flashcards
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Chapter 1: Introduction to Dental Materials
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Sample Questions
Q1) In history,the earliest recorded mention of restorative dentistry occurs when?
A) 2500 BC
B) 600 BC
C) 1200 AD
D) 1700 AD
Answer: B
Q2) Regulation over dental devices
A)Food and Drug Administration
B)American Dental Association
C)International Standards Organization
Answer: A
Q3) 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
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Chapter 2: Oral Environment and Patient Considerations
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Sample Questions
Q1) Corrosion
A)Electrical current between two dissimilar metals
B)Discoloration due to oxidation of the metal's surface
C)Deterioration of the metal due to moisture and acid present in the oral
D)The rate at which heat flows through a material
E)Opening and closing of a gap between the restoration and the tooth surface
Answer: C
Q2) Which of the following has been suggested to delay formation of surface tarnish on dental amalgams?
A) Incremental addition
B) Polishing
C) Use of non-copper-containing dental amalgam
D) Undercondensation
Answer: B
Q3) Some materials give off heat when mixed.What is this called?
A) Chemical reaction
B) Exothermic reaction
C) Thermal conductivity
D) Coefficient of thermal expansion
Answer: B
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Chapter 3: Physical and Mechanical Properties of Dental Materials
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Sample Questions
Q1) Altering the set ratios of a material for any purpose will do what?
A) Make the material harder
B) Produce adverse results
C) Speed up the initial set
D) Have little significance
Answer: B
Q2) Stiffness
A)Resistance to deformation
B)The greatest stress a structure can withstand without permanent deformation
C)The resistance of a solid to penetration
D)The maximum amount of stress a material can withstand without breaking
E)The ability of a material to resist fracture
Answer: A
Q3) Hardness
A)Resistance to deformation
B)The greatest stress a structure can withstand without permanent deformation
C)The resistance of a solid to penetration
D)The maximum amount of stress a material can withstand without breaking
E)The ability of a material to resist fracture
Answer: C
5
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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 of the following is recommended to help manage the patient's airway during dental procedures?
A) Having the patient use a pre-procedural mouth rinse
B) Having the patient sit up completely forward in the dental chair
C) Frequently turning the patient's head to the side during the procedure
D) Using high-velocity evacuation (HVE)and a rubber dam whenever possible
Q2) The chemical training program for employees must include which of the following?
1)The use of hazardous chemicals
2)Methods of production of chemicals
3)All safety practices,including all warnings
4)Required personal protection devices
5)Safe handling and disposal methods
A) 1,2,3,4,5
B) 1,2,3,4
C) 1,3,4,5
D) 1,3,4
Q3) Exposure to chemicals over a prolonged period of time is _____ exposure.
A) chronic
B) acute
C) latent
Page 6
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Chapter 5: Principles of Bonding
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Sample Questions
Q1) Etch gel is typically a/an _____ solution of phosphoric acid.
A) 5%
B) 18%
C) 24%
D) 37%
Q2) What is done to the dentinal surface following etching?
A) Dried to remove the smear layer
B) Dried to lower the surface tension
C) Left moist to keep the collagen fibrils fluffed up
D) Left moist to prevent oozing of fluid from the dentinal tubules
Q3) The oxygen-inhibited layer is a very thin coating of uncured resin.Where is it found?
A) Within the dentinal tubules
B) At the base of the polymerized bonding resin
C) On the surface of the polymerized bonding resin
D) Within intertubular and peritubular dentin,but not within dentinal tubules
Q4) 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) Hybrid composite
A)A light-cured,low-viscosity composite resin that contains fewer filler particles
B)An early generation of composite that contained filler particles ranging from 10 to 100 mm in diameter
C)A composite that contains all nano-sized fillers to enhance physical properties
D)A composite that contains both macrofill and microfill particles
E)A composite that contains very small filler particles averaging 0.04 mm in diameter
Q2) Macrofilled composite
A)A light-cured,low-viscosity composite resin that contains fewer filler particles
B)An early generation of composite that contained filler particles ranging from 10 to 100 mm in diameter
C)A composite that contains all nano-sized fillers to enhance physical properties
D)A composite that contains both macrofill and microfill particles
E)A composite that contains very small filler particles averaging 0.04 mm in diameter
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Chapter 7: Preventive and Desensitizing Materials
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Sample Questions
Q1) What is the proper order for the steps of applying sealant?
A) Etch,clean,cure,seal
B) Clean,etch,seal,cure
C) Etch,seal,cure,clean
D) Clean,seal,cure,etch
Q2) Which of the following is the worst type of sealant failure?
A) All of the sealant is lost.
B) Part of the sealant is lost.
C) The sealant remains in place but leaks.
D) Too much sealant is placed,resulting in excess material in the contact between adjacent teeth.
Q3) Which of the following causes of tooth sensitivity may be successfully treated with a desensitizing agent?
A) Dental caries
B) A cracked tooth
C) A leaking restoration
D) Exposed dentinal tubules
Q4) What should be done if a child has consumed an excessive amount of fluoride?
Q5) What is the oxygen-inhibited layer on cured dental sealant?
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Chapter 8: Teeth Whitening Materials and Procedures
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Sample Questions
Q1) How does tooth whitening work?
A) Dissolves stain from tooth enamel
B) Works as an abrasive against stains
C) Passes through enamel to lighten dentin
D) Forms free radicals on the tooth surface
Q2) Which of the following is/are a potential side effect(s)of bleaching?
A) Condyle pain
B) Tooth sensitivity
C) Gum irritation
D) All of the above
Q3) What is the active ingredient used for in-office bleaching materials?
A) Sodium nitrate
B) Phosphoric acid
C) Hydrogen peroxide
D) Carbamide peroxide
Q4) Which of the following is considered to be an intrinsic stain?
A) Coffee
B) Black line
C) Tetracycline
D) Chlorhexidine
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Chapter 9: Dental Ceramics
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Sample Questions
Q1) Violet color
A)Long wavelength
B)Short wavelength
C)High value
D)Low value
E)High chroma
Q2) Why do all-ceramic crowns have a more lifelike appearance than porcelain-bonded-to-metal crowns?
A) Have an opaque layer
B) Do not have an opaque layer to hide metal
C) Utilize high-fusing rather than low-fusing porcelain
D) Are cemented with different cements than porcelain-bonded-to-metal crowns
Q3) Which of the following is true concerning matching the shade for ceramic restorations?
A) A composite guide may be used for a ceramic restoration.
B) The ideal color for the area in which the shade will be matched is blue.
C) Shade tabs should be moistened and individually held adjacent to the teeth to be matched.
D) Stare at the color of the shade tab and tooth for several seconds so that the retina can adjust.
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Chapter 10: Dental Amalgam
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Sample Questions
Q1) For what reason have insurance carriers seen a reduction in the use of dental amalgam for posterior restorations by approximately 45% in the past 20 years?
A) Other direct restorative materials have superior durability,ease of handling,and physical characteristics.
B) Its wear resistance and compressive strength are inferior to composite resin and glass ionomer cement.
C) A study conducted by the National Institutes of Health (NIH)in 1991-1993 concluded that amalgam is not safe for human use.
D) Concerns by patients about its safety and its lack of esthetics have prompted many patients to request tooth-colored materials.
Q2) What is the result if an amalgam restoration corrodes?
A) Weakens over time
B) Stains surrounding tooth
C) Breaks down at the margins
D) All of the above are possible.
Q3) List the advantages and disadvantages of amalgam.
Q4) Describe the different particle shapes in amalgam alloys.
Q5) List the main components of amalgam alloy and describe their function.
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Chapter 11: Casting Metals, solders, and Wrought Metal
Alloys
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Sample Questions
Q1) Which of the following is the most esthetic margin for a ceramic-metal crown?
A) Disappearing metal margin
B) Porcelain facial margin
C) All-metal margin
D) All-metal facing
Q2) Which of the following metals is added to both gold and silver solders to lower the melting range?
A) Tin
B) Borax
C) Indium
D) Potassium fluoride
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
Q4) What are silver solders used for?
A) Soldering orthodontic wires
B) Soldering crowns and pontics
C) Soldering partial denture clasps
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Chapter 12: Dental Implants
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Sample Questions
Q1) Which of the following should occur during the hygiene visit for routine implant assessment and maintenance?
A) Routine probing is recommended.
B) The patient should return to the dental office at 12-month intervals.
C) The implant prosthesis should be removed for cleaning and maintenance.
D) The dentist may request periodic radiographs to check the bone level surrounding the implants.
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) Which of the following is true concerning home care for the implant patient?
A) Home care regimens should be customized for each patient.
B) All implant patients should receive standardized instructions.
C) Plaque-disclosing agents must never be used with implant patients.
D) Wooden plaque removers must not be used because they will scratch implants.
Q4) List and describe the different types of surgical procedures for placement of implants.
Page 14
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Chapter 13: Abrasion, finishing, and Polishing
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Sample Questions
Q1) What is the purpose of approved denture cleansers?
A) Freshen the acrylic
B) Loosen stains and plaque
C) Will not abrade the material
D) All of the above are true.
Q2) A higher number of particles or flutes on a rotary finishing bur _____ its abrasive intensity.
A) increases
B) decreases
C) has no impact on
Q3) Define finishing,polishing,and cleansing.
Q4) Which of the following is correct about pumice?
A) Frequently found in block form,which is then run onto a rag wheel to polish precious and semiprecious metal alloys in the laboratory
B) Used in coated disks and bonded rotary devices primarily used in finishing procedures
C) A major component of many prophylaxis pastes used to polish tooth structure,dental amalgam,and acrylic bases
D) Used to smooth enamel,or finish metal alloys and ceramic materials
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Chapter 14: Dental Cement
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Sample Questions
Q1) Liner/Low-strength base
A)A thin layer of material placed to protect the tooth from the components of dental materials and microleakage,stimulate reparative dentin,or act as a pulp capping
B)A thin layer placed on the floor and walls of the preparation to seal tubules and minimize microleakage
C)A thick layer of cement used to protect the tooth from chemical and thermal irritation
D)Thick,putty-like,condensable material that can be rolled into a ball or rope,suitable for use as a base
E)Less viscous,flows easily,can be drawn to a 1-inch string with a spatula,suitable for luting
Q2) Which of the following would not be a reason to place a high-strength base?
A) Promote reparative dentin
B) Decrease thermal sensitivity
C) Increase mechanical support
D) It's condensable
Q3) List the advantages and disadvantages of zinc oxide eugenol,zinc phosphate,zinc polycarboxylate,traditional glass ionomer,hybrid ionomer,and resin-based cements.
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Page 16
Chapter 15: Impression Materials
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Sample Questions
Q1) Which of the following elastomers are the most hydrophilic?
A) Polyethers
B) Polysulfides
C) Addition silicones
D) Condensation silicones
Q2) Which statement is true about impression trays?
A) The triple tray is a custom full-arch tray used for bite registration.
B) Stock trays are made of plastic rather than metal and can be solid or perforated.
C) Plastic trays are inexpensive and disposable,whereas metal trays are more expensive and must be cleaned and sterilized between uses.
D) Custom trays are constructed in the patient's mouth with chemically cured,light-cured,or thermoplastic resins on casts of the teeth.
Q3) Which characteristic should be considered when choosing an impression tray?
A) Be large enough to fit all oral structures
B) Be rigid to support the impression material
C) Accurately reproduce vestibules
D) All of the above are considered.
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Chapter 16: Gypsum and Wax Products
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Sample Questions
Q1) Which of the following is true of the double-pour method for fabricating and trimming diagnostic/working casts?
A) This technique involves two separate mixes.
B) After the impression is poured,the remaining material is used for the base.
C) One mix of gypsum is produced to pour the anatomic and art portions of the cast.
D) The material in the inverted impression may slump away from the impression,causing distortion of the cast or trapping or air voids.
Q2) When working models for cast restorations are being made,a die of high-strength stone (Type IV)is often poured with a base and adjacent teeth of Type _____ stone.
A) I
B) II
C) III
D) V
Q3) List and describe the use of the different types of gypsum products used in dentistry.
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18
Chapter 17: Polymers for Prosthetic Dentistry
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Sample Questions
Q1) Which of the following is not true about cross-linked polymers?
A) The bonds are weak.
B) The bond is stronger and stiffer.
C) They have short chain atoms attached.
D) The material is not easily manipulated.
Q2) Polymerization of chemical-cured acrylic resins is set into action when the tertiary amine in the liquid activates the _____ in the powder to produce free radicals.
A) plasticizers
B) hydroquinone
C) benzoyl peroxide
D) glycol dimethacrylate
Q3) During processing of a denture base,heat-cured acrylic resin in the _____ stage is placed in the space created by removal of the wax and record base.
A) sandy
B) sticky
C) dough
D) rubber
Q4) Describe how a denture is fabricated using heat-cured resin.
Q5) Describe the process of addition polymerization.
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Chapter 18: Provisional Restorations
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Sample Questions
Q1) Which factor,associated with a provisional restoration,is responsible for irritation,inflammation,and recession of the gingiva?
A) Chewing hard foods
B) Poor marginal coverage
C) Contour of the provisional
D) Brushing and flossing the provisional
Q2) What is the provisional of choice if an anterior tooth is fractured or badly decayed before the crown preparation process?
A) Custom made
B) Polycarbonate
C) Stainless steel
D) Zinc oxide eugenol
Q3) Which of the following is the most durable of the preformed crowns?
A) Polycarbonate crown
B) Stainless steel crown
C) Aluminum shell crown
D) Celluloid crown form lined with acrylic or composite materials
Q4) List and describe the four criteria for provisional coverage.
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Page 20
Chapter 19: Preventive and Corrective Oral Appliances
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Sample Questions
Q1) A sleep disorder caused when the muscles that support the soft palate,uvula,and tongue relax and the airway narrows or closes
A)Mouth guard
B)Obstructive sleep apnea
C)Space maintainer
D)Orthodontic tooth aligners
Q2) A fixed or removable appliance used to prevent adjacent teeth from drifting into the space created when a tooth is lost
A)Mouth guard
B)Obstructive sleep apnea
C)Space maintainer
D)Orthodontic tooth aligners
Q3) What is the function of an appliance for treating OSA?
A) Lifts the soft palate
B) Repositions the mandible
C) Postures the tongue forward
D) Only a and b are correct.
E) All are correct.
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