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Naji Ziad Arandi1, Tarek Rabi2

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|August 18, 2020
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Summary
This summary is machine-generated.

Evidence for routine cavity bases is limited. Resin-modified glass ionomers (RMGI) are preferred over zinc oxide eugenol (ZOE) for protective bases in deep cavities, while shallow preparations may not require bases.

Keywords:
baseslinerspulp protectionresin-modified glass ionomerzinc oxide eugenol

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Area of Science:

  • Dental Materials Science
  • Restorative Dentistry

Background:

  • Cavity bases are used in dental restorations for pulp protection.
  • Zinc oxide eugenol (ZOE) and resin-modified glass ionomers (RMGI) are common materials for cavity bases.

Purpose of the Study:

  • To review the literature on cavity bases.
  • To focus on the comparative roles of ZOE and RMGI as cavity bases.

Main Methods:

  • Literature search conducted from 1970-2020.
  • Databases searched include Scopus, PubMed, and Google Scholar.
  • Keywords: cavity liners, bases, pulp protection, ZOE, RMGI.

Main Results:

  • Limited evidence supports routine use of bases under amalgam or composite restorations.
  • Shallow and moderate cavities may not require lining or bases.
  • RMGI can serve as a protective base with calcium hydroxide in deep cavities.

Conclusions:

  • The use of cavity bases should be re-evaluated, favoring "no more lining or bases" in many cases.
  • Resin-modified glass ionomers are suitable and recommended cavity base materials.
  • Bonded RMGIs should replace ZOE in daily practice.