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Related Experiment Videos

Etching of dentin surface with ammonium citrate aqueous solution.

T Hayakawa1, I Shibuya, K Takahashi

  • 1Nihon University School of Dentistry at Matsudo, Japan.

Dental Materials Journal
|December 1, 1990
PubMed
Summary

New dentin etchants, ammonium citrate (AC), show promise for dental adhesion. A 10% AC solution effectively improved composite resin bonding to dentin, comparable to EDTA etchants.

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Area of Science:

  • Dental Materials Science
  • Biomaterials Engineering
  • Adhesive Dentistry

Background:

  • Effective adhesion between composite resins and dentin is crucial for durable dental restorations.
  • Current dentin etchants have limitations, necessitating the exploration of novel agents.
  • Ammonium citrate (AC) presents a potential alternative for dentin surface conditioning.

Purpose of the Study:

  • To evaluate the efficacy of new ammonium citrate (AC) dentin etchants.
  • To determine the optimal AC concentration for improving dentin-composite adhesion.
  • To compare the performance of AC etchants with established agents like EDTA.

Main Methods:

  • AC solutions with pH 7.3-7.4 and concentrations from 5% to 30% were prepared.
  • Dentin samples were etched with various AC concentrations.

Related Experiment Videos

  • Bond strengths were measured using MTYA.H and MTYA.G.H dentin primers.
  • Surface analysis focused on smear layer removal and tubule opening.

    • Main Results:

    • A 10% AC solution demonstrated the most effective improvement in dentin-composite adhesion when MTYA.G.H primer was used.
    • AC etching primarily removed the smear layer without significant opening of dentin tubules.
    • Bond strengths achieved with 10% AC were comparable to those obtained with neutralized 0.5 M EDTA or EDTA 3.2.
    • Bond strengths increased sequentially with MTYA.H and MTYA.G.H primers.

    Conclusions:

    • Ammonium citrate (AC) is a viable agent for dentin etching, enhancing composite resin adhesion.
    • The 10% AC concentration offers optimal performance, comparable to EDTA, with favorable surface characteristics.
    • The choice of dentin primer significantly influences bond strength, with MTYA.G.H yielding superior results.