Dental Materials Study Notes
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Questions and Answers

Which implant placement technique is known to have the lowest success rate?

  • One stage
  • Immediate (correct)
  • Four stage
  • Two stage

    • Which type of dental implant is the most commonly used today?

  • Subperiosteal
  • Transosteal
  • Endosseous (correct)
  • Supraperiosteal

    • What does the term 'immediate-placement surgical procedure' refer to?

  • The fixture protrudes through soft tissue at the time of surgery.
  • A provisional crown is placed immediately on the fixture.
  • The healing abutment is applied during the first stage of surgery.
  • The implant fixture is placed into the new socket after a tooth extraction. (correct)

    • Which of the following statements is true regarding selling dental implants?

    <p>Obtaining ADA Seal of Acceptance is optional for dental implant companies.</p> Signup and view all the answers

    What is the best method for cleaning titanium implants during a recare visit?

    <p>Titanium or plastic curettes and scalers</p> Signup and view all the answers

    What could be a possible reason for the discoloration of tooth #9?

    <p>Blunt trauma to the tooth</p> Signup and view all the answers

    Which of the following statements about obstructive sleep apnea appliances is correct?

    <p>They can lead to severe medical conditions.</p> Signup and view all the answers

    Which method is used for whitening non-vital teeth where materials are sealed inside the crown?

    <p>Walking bleach technique</p> Signup and view all the answers

    What is a potential side effect of tooth whitening?

    <p>Increased tooth sensitivity</p> Signup and view all the answers

    What is the correct thickness for a mouth guard intended for heavy contact sports?

    <p>5 mm thickness</p> Signup and view all the answers

    Which statement regarding the whitening process is not true?

    <p>All patients qualify for whitening procedures.</p> Signup and view all the answers

    Which cosmetic process is used to remove discolorations from teeth?

    <p>Whitening</p> Signup and view all the answers

    What is a possible outcome of wearing whitening trays overnight?

    <p>Clenching or grinding of teeth</p> Signup and view all the answers

    What is the proper PPE to be worn during the handling of dental materials that can generate particulate matter?

    <p>Safety glasses, lab coat or over gown, surgical or special dust mask, and heavy-duty utility gloves</p> Signup and view all the answers

    Which health and safety hazards are most common when working with dental materials?

    <p>Exposure to particulate matter, exposure to biological contaminants, exposure to noise, exposure to perfume, and exposure to airborne contaminants</p> Signup and view all the answers

    Since 2005, the American Dental Association (ADA) Seal of Acceptance is awarded to products for which groups?

    <p>Both professional and consumer</p> Signup and view all the answers

    Which of the following qualities must disinfection solutions possess?

    <p>All of the choices</p> Signup and view all the answers

    Which of the following impression materials cannot be poured multiple times?

    <p>Alginate</p> Signup and view all the answers

    What is an advantage of digital impressions?

    <p>All of the choices are correct</p> Signup and view all the answers

    Which of the following statements about hydrocolloids in dentistry is NOT true?

    <p>Agar hydrocolloid is not a reversible hydrocolloid</p> Signup and view all the answers

    What should be avoided when cleaning acrylic dentures to prevent damage?

    <p>Abrasive pastes or cleaners</p> Signup and view all the answers

    Which component is essential for a removable dental prosthesis?

    <p>Denture base</p> Signup and view all the answers

    Why is regular brushing of both dentures and gums important?

    <p>To stimulate circulation in the gums and remove biofilm</p> Signup and view all the answers

    What is a common consequence of not removing dentures at night?

    <p>Risk of developing fungal infections</p> Signup and view all the answers

    What can cause Denture-Induced Oral Mucosal Lesions (OML’s)?

    <p>Poor oral hygiene and denture care</p> Signup and view all the answers

    What instruction should be given regarding denture adhesive?

    <p>Thoroughly remove adhesive from the mouth daily</p> Signup and view all the answers

    Which of the following is not a consequence of failing to replace missing teeth?

    <p>Improved chewing efficiency</p> Signup and view all the answers

    When educating a patient on partial denture care, what is the critical point to communicate?

    <p>Remove the RPD when brushing and while eating</p> Signup and view all the answers

    What is one of the advantages of glass ionomer compared to composite?

    <p>It has been shown to release fluoride</p> Signup and view all the answers

    Which statement about glass ionomer cement (GIC) is false?

    <p>GIC functions well for class II restorations in adults</p> Signup and view all the answers

    What can new denture patients expect after receiving their dentures?

    <p>Difficulty pronouncing some words</p> Signup and view all the answers

    Which of the following is not correct about porcelain denture teeth?

    <p>They are easily repaired</p> Signup and view all the answers

    Which effect does porosity NOT have on an acrylic denture?

    <p>It enhances the strength of the acrylic</p> Signup and view all the answers

    What is the purpose of a bonding agent?

    <p>To provide adhesion</p> Signup and view all the answers

    Which statement is FALSE regarding the care of dentures by the patient?

    <p>Abrasive pastes or cleaners can be used for cleaning</p> Signup and view all the answers

    Which stage of polymerization of acrylic resins is longer for heat-cured resins during denture processing?

    <p>Dough</p> Signup and view all the answers

    Which factors could contribute to the development of fluorosis?

    <p>Excess amounts found in food</p> Signup and view all the answers

    What is the greatest anticaries benefit gained by topical fluoride exposure?

    <p>Before teeth eruption</p> Signup and view all the answers

    What are the main reasons for using a rubber dam in dental procedures?

    <p>Keeps the area free of contamination</p> Signup and view all the answers

    All-ceramic restorations can be used for which types of indirect dental restoratives?

    <p>Inlays, onlays, veneers, and crowns</p> Signup and view all the answers

    Which statement is true regarding computer-aided machining for crown and bridge techniques?

    <p>No die needs to be poured, and no temporary crown is necessary.</p> Signup and view all the answers

    What is/are the disadvantage(s) of ultrathin veneers that do not require preparation?

    <p>May be over-contoured</p> Signup and view all the answers

    What is the active ingredient in Arestin?

    <p>10% doxycycline</p> Signup and view all the answers

    Study Notes

    Dental Materials Study Notes

    • Resistance to flow is known as viscosity
    • Oral biofilm is a complex organization of microorganisms on oral surfaces and restorations, considered normal or healthy when non-pathogens keep harmful microbes in balance, a slick film of mucus that develops on surfaces within the mouth
    • The ADA Seal is usually awarded for the life of the product, it helps consumers make informed decisions about the safety and efficiency of products, but does not need to be re-evaluated if the product composition changes.
    • The study of dental materials includes knowledge of physical reactions, manipulation, and chemical reactions of materials.
    • Galvanism is an electric shock sensation and metallic taste caused by contact between a gold crown and an amalgam restoration.
    • Ultimate strength is the maximal amount of stress a material can withstand before breaking.
    • Microleakage may cause postoperative sensitivity, recurrent decay, and marginal staining.
    • Leakage of fluids and debris along the tooth-restoration interface is called microleakage.
    • Color shades of teeth can vary depending on the incident light or light source, this is called metamerism.
    • Colonies of bacteria growing on teeth are called dental plaque.
    • Repeated stresses in mastication can cause fatigue failure in materials.
    • Personal protective equipment (PPE) for handling dental materials that can generate particulate matter includes safety glasses, a lab coat or over gown, a dust mask, and heavy-duty utility gloves,
    • Exposure to particulate matter, biological contaminants, perfume, airborne contaminants are common work-related health and safety hazards.
    • Disinfection solutions must be safe to use, be on an EPA N List, and destroy/inactivate COVID & Tuberculosis virus.
    • Impression materials that cannot be poured more than once include polyvinyl siloxane.
    • Digital impressions have advantages such as pre- and post-operative models, accurate impressions, and virtual adjustments.
    • Agar hydrocolloids are not reversible hydrocolloid.
    • Alginate hydrocolloid is a temporary impression material.
    • Polyethers are hydrophobic impression materials.
    • Alginate impression shrinkage is called syneresis.
    • Elastomer impression materials are popular due to their flexibility.
    • The proper time to disinfect alginate is 10-20 minutes.
    • Ferric sulfate is an astringent used to control bleeding prior to taking impressions.
    • Polyvinyl siloxane (PVS) materials are hydrophobic but moisture can cause loss of surface detail.
    • The initial setting time for gypsum is related to different factors.
    • Boxing wax is easily manipulated at room temperature.
    • Gypsum rock can be calcium sulfate dihydrate, calcium sulfate hemihydrate, or calcium sulphate hydrate.
    • The melting range of wax is the point at which the wax softens and then flows.
    • Mixing plaster or stone materials involves placing the water in the bowl first and then slowly sifting the powder into the water.
    • Calcination involves removing water from gypsum.
    • Utility wax is used to adapt the periphery of an impression tray, provide a better fit into the vestibule of the impression material, or cover sharp brackets and wires for orthodontic patients.
    • Gypsum is used for models, casts, and stone restorations.
    • The lost wax technique involves placing invested material in a burnout oven, removing the wax, and creating a wax pattern.
    • Setting time (hardening) of gypsum involves an exothermic chemical reaction.
    • High-strength gypsum stone is also known as type III stone.
    • Desirable strength of gypsum is related to the amount of water used.
    • Tooth stains are categorized as extrinsic or intrinsic.
    • Extrinsic stains occur externally and can be removed by brushing or scaling, intrinsic stains are on the tooth surface and cannot be removed easily.
    • Whitening materials may include hydrogen peroxide or carbamide peroxide.
    • Sports guards are used to protect teeth and gums from impact or trauma.
    • In-office whitening refers to procedures performed by a dental professional using specially formulated products .
    • Home whitening involves patients using a prescribed take home whitening kit for a period of time.
    • Blunting or trauma to the tooth could cause discoloration.
    • Whitening results can be affected by a side effect of inflammation treatment.
    • Obstructive sleep apnea appliances reposition the mandible to a forward position.
    • The process of making impressions or molds of a patient's teeth or their restoration
    • Materials used to take impressions (including how they are used and properties)
    • Different types of impression trays
    • Materials used for polishing or finishing restorations
    • Effects on teeth and restorations from polishing
    • How to choose proper materials for tooth restoration based on their properties
    • Using and handling and care of dental materials and supplies safely
    • Understanding the chemistry involved in different dental processes
    • Considerations concerning the safety of materials and disposal methods
    • Methods and implications of using different dental tools on a patient, specifically related to their safety and the health of dental equipment and workers

    Amalgam Study Notes

    • Amalgam mixes are controlled by manufacturers and dentists
    • Amalgam is held in place by matrix bands.
    • Matrix bands help contain amalgam during condensation, create proximal contours and contacts, shape amalgam
    • Amalgam strength can be affected by trituration or the amount of mercury included in the mix.
    • Modern alloys may use less mercury compared to previous ones.
    • Mercury in amalgam raises concerns about patient safety, office staff, and environmental factors.
    • Mixing amalgam is called trituration.

    Dental Sutures Study Notes

    • Non-absorbable sutures are usually made of silk and require removal.
    • Absorbable sutures are made from animal intestines (cattle, sheep, or goats) and dissolve in the patient's oral cavity.
    • Success rates may differ among implant placement techniques.
    • Implant fixtures may be placed directly into the socket immediately after the surgical extractions of a tooth.
    • Surgical placement of an implant typically requires an extra-coronal procedure.

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    Dental Material Final Exam Review PDF

    Description

    Dive into the essential concepts of dental materials, including viscosity, oral biofilms, and galvanism. Understand the importance of the ADA Seal and the implications of microleakage in dental restorations. This quiz offers a comprehensive overview perfect for dental students and professionals alike.

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