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A single-component bonding system microleakage study

L Settembrini1, J P Gultz, W Scherer

  • 1Division of Restorative and Prosthodontic Sciences, New York University College of Dentistry, NY 10010, USA.

General Dentistry
|July 1, 1997
PubMed
Summary
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This study compared one-component and two-component dental bonding systems for microleakage. The one-step dentin bonding system effectively prevented microleakage at enamel and dentin interfaces.

Area of Science:

  • Dentistry
  • Dental Materials Science

Background:

  • Microleakage is a significant concern in dental restorations, potentially leading to secondary caries and pulpal issues.
  • Effective bonding agents are crucial for sealing tooth structure and preventing marginal gaps.

Purpose of the Study:

  • To compare the microleakage of a one-component dentin bonding system against a two-component system and a control group.
  • To evaluate the efficacy of different bonding systems in preventing microleakage at enamel and dentin interfaces.

Main Methods:

  • Class V cavity preparations were made in extracted teeth with enamel and dentin margins.
  • Restorations were placed using composite with either no bonding agent (control), Prime and Bond (two-component), or ProBond (one-component).
  • Specimens underwent thermocycling in fuchsin dye to assess microleakage.

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Main Results:

  • Significant differences in microleakage were found between the control group and both the Prime and Bond and ProBond groups.
  • Both the Prime and Bond and ProBond systems demonstrated reduced microleakage compared to no bonding agent.
  • The one-step dentin bonding system (ProBond) effectively sealed both composite-enamel and composite-dentin interfaces.

Conclusions:

  • One-component dentin bonding systems, such as ProBond, are effective in preventing microleakage.
  • The use of bonding agents significantly reduces microleakage compared to direct composite restorations without a bonding agent.
  • These findings support the clinical use of one-step dentin bonding systems for durable restorations.