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Microleakage in different primary tooth restorations.

Wen-Yu Shih1

  • 1Division of Pedodontics, Department of Stomatology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Faculty of Dentistry, School of Dentistry, National Yang-Ming University, Taipei, Taiwan, ROC.

Journal of the Chinese Medical Association : JCMA
|February 4, 2016
PubMed
Summary
This summary is machine-generated.

Glass ionomer and glass ionomer with banding showed superior performance in primary molar restorations, significantly reducing microleakage compared to amalgam and composite resin. However, no material completely prevented leakage.

Keywords:
bandingclass II restorationmicroleakageprimary molar

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Area of Science:

  • Dental Materials Science
  • Pediatric Dentistry
  • Restorative Dentistry

Background:

  • Microleakage in dental restorations can lead to sensitivity, secondary caries, discoloration, and failure.
  • Advanced materials like composite resin and glass ionomer cement aim to improve tooth structure binding and reduce microleakage.
  • Class II restorations in primary molars are crucial for maintaining oral health and function.

Purpose of the Study:

  • To compare the microleakage of amalgam (Am), composite resin (CR), glass ionomer (GI), Ketac-Silver (KS), and GI with banding (GI+B) in class II restorations of primary molars.
  • To evaluate the effectiveness of different restorative materials in preventing marginal leakage.
  • To determine the optimal material for class II primary molar restorations based on microleakage assessment.

Main Methods:

  • Fifty primary molars were prepared with class II cavities and restored with one of five materials (Am, CR, GI, KS, GI+B).
  • Restored teeth underwent 100 thermocycles (5-55°C) followed by immersion in basic fuchsin dye.
  • Dye penetration was assessed at occlusal and cervical margins after sectioning the teeth.

Main Results:

  • Cervical leakage exceeded occlusal leakage in composite resin, glass ionomer, and Ketac-Silver groups.
  • Amalgam showed significantly greater occlusal leakage than composite resin, glass ionomer, and glass ionomer with banding.
  • Amalgam exhibited greater cervical leakage than glass ionomer and glass ionomer with banding; Ketac-Silver showed more cervical leakage than glass ionomer with banding.

Conclusions:

  • Glass ionomer and glass ionomer with banding demonstrated superior performance by exhibiting less microleakage compared to other tested materials.
  • While performing better, none of the restorative materials completely eliminated microleakage at the margins.
  • Further research may explore modifications to further enhance the sealing capabilities of glass ionomer cements.