Ceramic Crowns in Dentistry
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Questions and Answers

What is the process called when a ceramic is removed by a dentist?

  • Drilling (correct)
  • Shaping
  • Filling
  • Curing
  • What is the result of firing powder at a very high temperature?

  • It stays in powder form
  • It becomes a solid object (correct)
  • It becomes a liquid
  • It evaporates
  • What type of material is an amalgam?

  • Ceramic
  • Composite
  • Polymer
  • Metallic (correct)
  • What is the initial state of a direct material?

    <p>Putty-like</p> Signup and view all the answers

    What is the purpose of carving an amalgam?

    <p>To resemble the missing tooth structure</p> Signup and view all the answers

    What type of material is a porcelain crown?

    <p>Dental ceramic</p> Signup and view all the answers

    What is the characteristic of indirect restorative polymers?

    <p>They are typically processed or cured at elevated temperatures and under high pressures</p> Signup and view all the answers

    What type of restoration is not planned to be replaced in a particular time period?

    <p>Permanent restoration</p> Signup and view all the answers

    What type of materials are used in dental implants?

    <p>Bone regeneration materials</p> Signup and view all the answers

    Where are dental implants anchored?

    <p>In alveolar bone</p> Signup and view all the answers

    What type of restorations are constructed directly in the oral cavity?

    <p>Direct Restorative Materials</p> Signup and view all the answers

    What is the typical shape of dental implants?

    <p>Both a and b</p> Signup and view all the answers

    What is the category of materials that includes ceramic materials?

    <p>Indirect Restorative Materials</p> Signup and view all the answers

    Where are restorations made of direct restorative materials placed?

    <p>In the cavity preparation</p> Signup and view all the answers

    What is the discipline that deals with dental implants?

    <p>Restorative dentistry</p> Signup and view all the answers

    What is the purpose of dental implants?

    <p>To support teeth replacement</p> Signup and view all the answers

    What is the main difference between direct and indirect restorative materials?

    <p>Indirect materials are set outside the mouth</p> Signup and view all the answers

    What is the reaction that sets composite restorations?

    <p>Specific chemical reaction</p> Signup and view all the answers

    What is the purpose of aggressive preventive dentistry?

    <p>To prevent the need for restoration and replacement of teeth</p> Signup and view all the answers

    What is the characteristic of glass ionomers and other cements?

    <p>They are mortar-like materials that set by an acid-base chemical reaction</p> Signup and view all the answers

    What is the advantage of quality restorative dentistry in a well-maintained oral cavity?

    <p>It gives the patient years and years of service</p> Signup and view all the answers

    What is the common fate of restorative dentistry, including fillings, crowns, bridges, and dentures?

    <p>They wear out and fail</p> Signup and view all the answers

    What is the importance of the cycle of restoration and re-restoration of teeth in dentistry?

    <p>It is an important factor in the practice of dentistry</p> Signup and view all the answers

    What is the main characteristic of direct restorative materials, such as composite restorations?

    <p>They are set by a specific chemical reaction in the mouth</p> Signup and view all the answers

    Study Notes

    Restorative Dentistry

    • In restorative dentistry, ceramics are "drilled" by dentists when removing decay and then fired at high temperatures to become solid objects.
    • Each material has its own requirements for cavity preparation design.

    Direct Restorative Materials

    • Direct restorative materials are putty-like materials that set to become hard and strong.
    • Examples of direct restorative materials include:
      • Amalgam, a metallic material formed by combining liquid mercury with powdered metals.
      • Composites, esthetic materials that polymerize in the mouth.
      • Glass ionomers and other cements, mortar-like materials that set by an acid-base chemical reaction in the mouth.

    Indirect Restorative Materials

    • Indirect restorative materials are plastics typically processed or cured at elevated temperatures and under high pressures.
    • Examples of indirect restorative materials include:
      • Porcelain crowns.
      • Pink “gingival” portion of a denture.

    Classification by Longevity of Use

    • Permanent restorations are those that are not planned to be replaced in a particular time period.
    • Although referred to as permanent, restorations do not last forever and will eventually need to be replaced.

    Dental Implants

    • Dental implants are screws or posts anchored into alveolar bone and protrude through the gingiva into the oral cavity.
    • Implants are considered part of restorative dentistry but are segregated from other materials due to their specialized nature.

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    Description

    Learn about the process of creating ceramic crowns in dentistry, including the firing of powder at high temperatures to create a solid object.

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