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Related Experiment Videos

Core restoration for crown preparation.

Thomas D Larson1

  • 1Department of Restorative Sciences, Division of Operative Dentistry, University of Minnesota School of Dentistry, Minneapolis, Minnesota, USA. larso004@umn.edu

Northwest Dentistry
|November 24, 2004
PubMed
Summary
This summary is machine-generated.

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Dental core materials are crucial for restoring severely damaged teeth. Amalgam offers superior strength, while composite resins are suitable for moderate cases, and glass ionomers serve best as bases.

Area of Science:

  • Restorative Dentistry
  • Dental Materials Science

Background:

  • The period 1991-2003 saw a shift from zinc phosphate cements to adhesive resin luting materials for crown placement.
  • Core materials are essential for rebuilding substantial tooth structure loss before crown restoration.

Purpose of the Study:

  • To review literature from 1991-2003 on dental core materials.
  • To evaluate principles of core placement, material selection, preparation design, and luting choices.
  • To analyze clinical trial outcomes for various core materials.

Main Methods:

  • Literature review of scientific articles published between 1991 and 2003.
  • Analysis of studies focusing on core material properties, clinical performance, and preparation guidelines.
  • Synthesis of findings regarding amalgam, composite resin, and glass ionomer materials.

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Main Results:

  • Amalgam cores demonstrate the highest strength and are best for teeth with extensive structural loss.
  • Composite resins (chemically or light-cured, reinforced or not) are effective for moderately compromised teeth.
  • Glass ionomers are unsuitable as core materials due to insufficient strength but are useful as base materials to improve crown fit.

Conclusions:

  • Material selection for dental cores depends on the degree of tooth structure loss.
  • Amalgam and composite resins are primary choices for core restorations, with specific indications for each.
  • Glass ionomers have a defined role as base materials rather than load-bearing cores.