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Annals of Biomedical Engineering

, Volume 38, Issue 6, pp 1989–2003 | Cite as

Adhesive/Dentin Interface: The Weak Link in the Composite Restoration

  • Paulette SpencerEmail author
  • Qiang Ye
  • Jonggu Park
  • Elizabeth M. Topp
  • Anil Misra
  • Orestes Marangos
  • Yong Wang
  • Brenda S. Bohaty
  • Viraj Singh
  • Fabio Sene
  • John Eslick
  • Kyle Camarda
  • J. Lawrence Katz
Article

Abstract

Results from clinical studies suggest that more than half of the 166 million dental restorations that were placed in the United States in 2005 were replacements for failed restorations. This emphasis on replacement therapy is expected to grow as dentists use composite as opposed to dental amalgam to restore moderate to large posterior lesions. Composite restorations have higher failure rates, more recurrent caries, and increased frequency of replacement as compared to amalgam. Penetration of bacterial enzymes, oral fluids, and bacteria into the crevices between the tooth and composite undermines the restoration and leads to recurrent decay and premature failure. Under in vivo conditions the bond formed at the adhesive/dentin interface can be the first defense against these noxious, damaging substances. The intent of this article is to review structural aspects of the clinical substrate that impact bond formation at the adhesive/dentin interface; to examine physico-chemical factors that affect the integrity and durability of the adhesive/dentin interfacial bond; and to explore how these factors act synergistically with mechanical forces to undermine the composite restoration. The article will examine the various avenues that have been pursued to address these problems and it will explore how alterations in material chemistry could address the detrimental impact of physico-chemical stresses on the bond formed at the adhesive/dentin interface.

Keywords

Adhesive/dentin interfacial bond Structure Physico-chemical stresses Bonding durability Adhesive development 

Notes

Acknowledgments

The authors gratefully acknowledge research support from NIDCR grants DE14392 (PS) and K23DE/HD00468 (BSB).

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Copyright information

© Biomedical Engineering Society 2010

Authors and Affiliations

  • Paulette Spencer
    • 1
    • 2
    Email author
  • Qiang Ye
    • 2
  • Jonggu Park
    • 2
  • Elizabeth M. Topp
    • 3
  • Anil Misra
    • 2
    • 4
  • Orestes Marangos
    • 4
  • Yong Wang
    • 5
  • Brenda S. Bohaty
    • 6
  • Viraj Singh
    • 1
  • Fabio Sene
    • 7
  • John Eslick
    • 2
  • Kyle Camarda
    • 8
  • J. Lawrence Katz
    • 2
    • 9
  1. 1.Department of Mechanical EngineeringUniversity of KansasLawrenceUSA
  2. 2.Bioengineering Research CenterUniversity of KansasLawrenceUSA
  3. 3.Department of Industrial and Physical PharmacyPurdue UniversityWest LafayetteUSA
  4. 4.Department of Civil EngineeringUniversity of KansasLawrenceUSA
  5. 5.Department of Oral BiologyUniversity of Missouri-Kansas City School of DentistryKansas CityUSA
  6. 6.Department of Pediatric DentistryUniversity of Missouri-Kansas City School of DentistryKansas CityUSA
  7. 7.Department of Restorative DentistryState University of Londrina, School of DentistryLondrinaBrazil
  8. 8.Department of Chemical EngineeringUniversity of KansasLawrenceUSA
  9. 9.School of EngineeringCase Western Reserve UniversityClevelandUSA

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