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Molecular precursor method for thin carbonate-containing apatite coating on dental implants.

Tohru Hayakawa1, Mitsunobu Sato2

  • 1Department of Dental Engineering, Tsurumi University School of Dental Medicine.

Dental Materials Journal
|February 11, 2020
PubMed
Summary

The molecular precursor method effectively coats titanium implants with carbonate-apatite (CA) films. This CA coating significantly enhances bone integration for dental and orthopedic applications.

Keywords:
Dental implantMolecular precursor methodThin apatite coatingTitaniumTitanium web

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Area of Science:

  • Biomaterials Science
  • Surface Chemistry
  • Orthopedic Research

Background:

  • Biomaterial surface modification is crucial for improving osseointegration of medical implants.
  • Titanium and zirconia are widely used implant materials, but their surface properties can be enhanced.
  • Carbonate-apatite (CA) coatings mimic natural bone mineral, promoting better biological response.

Purpose of the Study:

  • To introduce and evaluate the molecular precursor method for coating implant materials with CA films.
  • To assess the efficacy of CA coatings on titanium and zirconia implants in promoting bone formation.
  • To demonstrate the applicability of the method for complex geometries like three-dimensional titanium webs.

Main Methods:

  • A simple molecular precursor solution (ethanol, calcium-EDTA, phosphate salt) was used.
  • The solution was applied to titanium surfaces and heated at 600°C for 2 hours.
  • The method was extended to coat three-dimensional titanium webs and partially stabilized zirconia.

Main Results:

  • Adherent thin CA films were successfully coated onto titanium surfaces.
  • CA-coated titanium implants showed significantly higher bone-to-implant contact values compared to uncoated implants (p<0.05).
  • Excellent bone formation was observed within CA-coated three-dimensional titanium webs and on CA-coated zirconia.

Conclusions:

  • The molecular precursor method is a simple and effective technique for producing thin CA coatings on various implant materials.
  • CA coatings enhance the osseointegration of titanium and zirconia implants.
  • This method holds promise for improving the clinical performance of orthopedic and dental implants.