Calcium Hydroxide Liners Review
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Questions and Answers

What is the primary purpose of cavity liners according to Marzouk et al?

  • To enhance the aesthetic appearance of the tooth
  • To promote faster healing of the tooth structure
  • To provide a base for restorative materials
  • To protect the pulp from irritants (correct)

    • What materials are commonly included in cavity liners as mentioned in the content?

  • Amalgam and resin-bonded agents
  • Silicates and zinc oxide eugenol
  • Glass ionomer cements and resin composites
  • Calcium hydroxide and mineral trioxide aggregate (MTA) (correct)

    • What is a significant distinction made between liners and suspension liners?

  • Liners have a thicker application than suspension liners
  • Suspension liners are applied in a single layer
  • Liners are only used for posterior teeth
  • The terms should not be used synonymously (correct)

    • What is the maximum film thickness of cavity liners as described?

    <p>25 µm</p> Signup and view all the answers

    What is the purpose of applying a liner in a cavity preparation?

    <p>To seal the dentine and prevent bacterial influx</p> Signup and view all the answers

    What is the primary objective of the review on calcium hydroxide liners?

    <p>To integrate literature on cavity liners and pulp protection</p> Signup and view all the answers

    What research databases were searched for articles related to calcium hydroxide liners?

    <p>PubMed, MEDLINE, and Ovid</p> Signup and view all the answers

    According to the review, under which condition should calcium hydroxide liners be used?

    <p>Only in the deepest spots with dentine thickness ≤0.5 mm</p> Signup and view all the answers

    What should follow the application of calcium hydroxide liners?

    <p>A protective layer of resin-modified glass ionomer</p> Signup and view all the answers

    How does this review classify the inclusion criteria for the articles reviewed?

    <p>Flexible with no specific criteria</p> Signup and view all the answers

    What was the objective of conducting a comprehensive literature review on calcium hydroxide?

    <p>To enhance understanding of calcium hydroxide's role as a liner</p> Signup and view all the answers

    Which of the following is NOT a focus area of the review on calcium hydroxide liners?

    <p>Cavity cleaning techniques</p> Signup and view all the answers

    What aspect of calcium hydroxide liners does the review emphasize?

    <p>The specific application in extreme cavity depths</p> Signup and view all the answers

    What has been reported as the liner of choice for deep cavities in clinical practice?

    <p>Calcium hydroxide</p> Signup and view all the answers

    According to the literature, why might liners not be used alone in deep cavities?

    <p>They lack sufficient strength</p> Signup and view all the answers

    Which material is defined as a suspension or dispersion that can be applied as a thin film on a tooth surface?

    <p>Calcium hydroxide</p> Signup and view all the answers

    What is one of the common issues regarding the definition of 'liners' in dental literature?

    <p>It has led to confusion among practitioners</p> Signup and view all the answers

    What do Heymann et al. state about liners?

    <p>They can be different types of materials</p> Signup and view all the answers

    Which of the following best describes the thickness of a cavity liner?

    <p>Relatively thin film</p> Signup and view all the answers

    What is the primary goal of using liners and bases in operative dentistry?

    <p>To preserve pulp vitality in compromised teeth</p> Signup and view all the answers

    Which material has long been regarded as the gold standard for pulp protection?

    <p>Calcium hydroxide</p> Signup and view all the answers

    What should general dentists gain from the review on calcium hydroxide liners?

    <p>A comprehensive overview for better clinical application</p> Signup and view all the answers

    What is a significant limitation of using liners according to the provided content?

    <p>They may not hold up under high stress</p> Signup and view all the answers

    What therapeutic effect is promoted by the use of liners under restorations?

    <p>Sealing against microorganisms and their by-products</p> Signup and view all the answers

    How has the understanding of pulp protection evolved over time?

    <p>There is a growing recognition of the importance of pulpal health</p> Signup and view all the answers

    What traditional lining materials are commonly used for pulp protection?

    <p>Calcium hydroxide, glass ionomer, and resin-modified glass ionomers</p> Signup and view all the answers

    What is a significant reason for the continuous recommendation of liners in restorative procedures?

    <p>They actively promote the deposition of tertiary dentine</p> Signup and view all the answers

    What has been one of the evolving concepts regarding the use of liners?

    <p>Their therapeutic effect is just as important as their sealing properties</p> Signup and view all the answers

    What is the role of liners beneath restorations in terms of pulp health?

    <p>To maintain and protect pulp vitality</p> Signup and view all the answers

    Signup and view all the answers

    Study Notes

    Calcium Hydroxide Liners: A Literature Review

    • Calcium hydroxide liners are used in operative dentistry to preserve pulp vitality in compromised teeth
    • Liners are placed on unexposed pulp to maintain health and stimulate dentin deposition
    • Liners have been used traditionally to protect the pulp from harmful materials during restorations
    • Current use is for therapeutic effects and/or sealing dentin tubules to prevent ingress of microorganisms
    • Traditional lining materials include calcium hydroxide, glass ionomer, and resin-modified glass ionomers (RMGIs)
    • Calcium hydroxide is a popular choice, often considered the gold standard for liners in deep cavities

    Types of liners

    • Calcium hydroxide:

      • Available as aqueous suspensions, cements, and filled resins
      • High solubility in water, can be problematic under restorations if not properly sealed
      • Often recommended only if remaining dentin thickness is ≤0.5 mm.

    • Resin-modified glass ionomers (RMGIs):

      • Often used as a base to cover calcium hydroxide due to better properties like low solubility
      • Should be used in cavities with RDT’s greater than 0.5mm

    • Zinc oxide eugenol (ZOE):

      • Not commonly used as liners now
      • Considered for some clinical applications

    • Mineral trioxide aggregate (MTA):

      • Not typically recommended as a cavity liner due to relatively low compressive strength and slower-setting properties

    Definitions of Liners

    • The definition of liners is sometimes confusing in dental literature
    • Some define liners as film forming materials with therapeutic agents.
    • Others describe them as materials placed in a thin layer to seal dentine during restorative procedures, and for possible therapeutic benefits.

    Ideal Properties of Cavity Liners

    • Antibacterial properties are desirable to prevent bacterial growth
    • Calcium hydroxide liners display some antibacterial properties.
    • High adhesion to both dentin and restorative materials is critical to limit leakage and protect the pulp effectively
    • Stability and longevity are required properties for a liner
    • Thermal insulation is desirable, especially in deep cavities

    Clinical Use and Recommendations

    • Use of cavity liners depends on the RDT (remaining dentin thickness) (ideally ≤0.5 mm)
    • Current methods advocate that RMGIs should be placed over calcium hydroxide to seal the dentin tubules

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    Related Documents

    Calcium Hydroxide Liners: A Literature Review PDF

    Description

    Explore the use of calcium hydroxide liners in operative dentistry, focusing on their role in preserving pulp vitality and stimulating dentin deposition. This quiz covers traditional and modern materials, their therapeutic effects, and sealing capabilities against microorganisms. Test your knowledge on the gold standard materials used in deep cavities.

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