Skip to main content
SpringerLink
Log in

Degradation phenomena of magnetic attachments used clinically in the oral environment

  • Published:
Metals and Materials International Aims and scope Submit manuscript

Abstract

The purpose of this study was to investigate the mechanisms involved in the failure of magnetic attachments used to retain dental prostheses. Dyna magnets were retrieved from dentures that had failed after 34 months of clinical use. These magnetic attachments were prepared and sectioned so as to observe the corrosion surface and layer in order to analyze the corrosion behaviors of the attachments. The corroded surface was observed under a field emission scanning electron microscope (FE-SEM) (JSM 840A, JEOL, Japan). An X-ray diffractometer (XRD) was used to analyze the corrosion product formed due to corrosion in the oral environment. Erosion-corrosion started in the uneven portion of the stainless steel cover in the magnetic attachments composed with Nd−Fe−B alloy. Corrosion was initiated on the worn stainless steel surface, followed by spalling of magnetic material due to corrosive solution. The corrosion rate increased drastically after the corrosion product caused spalling in Nd−Fe−B alloy. Corrosion initiated in the uneven stainless steel surface as well as in the welded zone. In conclusion, the failure of magnetic attachments may occur by either welding failure or breakdown of the encapsulating material. Thus, we believe that treating the surface of magnetic attachments would resolve the corrosion problem seen in magnetic attachments to some extent.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. R. J. Hayes and A. S. Gonten,Clinical application of rareearth magnets, p. 357–360, General Dentistry (1990).

  2. G. A. Smith, R. E. Laird, and A. A. Grant,J. Oral Rehabi. 10, 481 (1983).

    Article  CAS  Google Scholar 

  3. D. R. Burns, J. W. Unger, R. K. Elswick, and D. A. Beck,J. Prosthet. Dent. 73, 354 (1995).

    Article  PubMed  CAS  Google Scholar 

  4. L. W. Carlyle, J. M. Duncan, J. T. Richardson, and L. Garcia,J. Prosthet. Dent. 56, 583 (1986).

    Article  PubMed  CAS  Google Scholar 

  5. T. R. Jackson,Int. J. Oral. Maxillofac. Imp. 1, 81 (1986).

    CAS  Google Scholar 

  6. J. W. McCartney,J. Prosthet. Dent. 66, 6 (1991).

    Article  PubMed  CAS  Google Scholar 

  7. J. P. Sandler,Am. J. Orthod. Dentofac. Orthop. 100, 489 (1991).

    Article  CAS  Google Scholar 

  8. A. A. Gianelly, A. S. Vaitas, and W. M. Thomas,Am. J. Orthod. Dentofac. Orthop. 95, 161 (1989).

    Article  Google Scholar 

  9. V. Kalra, C. J. Burstone, R. Nanda,Am. J. Orthod Dentofac. Orthop. 95, 467 (1989).

    Article  CAS  Google Scholar 

  10. C. Drago,J. Prosthet. Dent. 66, 536 (1991).

    Article  PubMed  CAS  Google Scholar 

  11. I. Naert, M. Quirynen, G. Theuniers, and D. van Steenberghe,J. Prosthet. Dent. 65, 671 (1991).

    Article  PubMed  CAS  Google Scholar 

  12. H. Tsutsui, Y. Kinouchi, H. Sasaki, M. Shiota, and T. shita,J. Dent. Res. 58, 1597 (1979).

    PubMed  CAS  Google Scholar 

  13. A. D. Vardimon, T. M. Graber, D. Drescher, and C. Bourauel,Am. J. Orthod. Dentofac. Orthop. 100, 494 (1991).

    Article  CAS  Google Scholar 

  14. A. Kitsugi, O. Okuno, T. Nakano, H. Hamanaka, and T. Kuroda,Dent. Mater. J. 11, 129 (1992).

    Google Scholar 

  15. Y. M. Ko, H. C. Choe, C. H. Chung, H. S. Jung, and S. W. Choi,J. Korean Rec. Soc. Dent. Mater. 26, 337 (1999).

    Google Scholar 

  16. M. A. Riley, A. J. Williams, J. D. Speight, A. D. Walmsley, and I. R. Harris,Int. Journal Prosth. 12, 249 (1999).

    CAS  Google Scholar 

  17. M. K. Son, H. C. Choe, and C. H. Chung,Met. Mater.-Int. 10, 153 (2004).

    Article  CAS  Google Scholar 

  18. B. S. Sohn, I. T. Chang, S. J. Heo, and J. Y. Keak,J. Korean Academy Prosthodont. 39, 336 (2001).

    Google Scholar 

  19. L. L. Shreir,Corrosion vol. 1, p. 6–11, Newness Butterworths, London (1972).

    Google Scholar 

  20. P. Donald,Hand book of stainless steel, 4:1, MacGraw-Hill, New York (1977).

    Google Scholar 

  21. T. Nakano, O. Okuno, and H. Hamanaka,Report of the Institute for Medical and Dental Engineering 22, 17 (1988).

    CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Prosthodontics, College of Dentistry, Chosun University, 375, Seoseok-dong, Dong-gu, 501-200, Gwangju, Korea

    Chae-Heon Chung & Jong-Ha Kwak

  2. Department of Dental Materials & Research Center of Nano-Interface Activation for Biomaterials, College of Dentistry, Chosun University, 375, Seoseok-dong, Dong-gu, 501-200, Gwangju, Korea

    Han-Cheol Choe

Authors
  1. Chae-Heon Chung
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Han-Cheol Choe
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Jong-Ha Kwak
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Han-Cheol Choe.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Chung, CH., Choe, HC. & Kwak, JH. Degradation phenomena of magnetic attachments used clinically in the oral environment. Met. Mater. Int. 12, 357–364 (2006). https://doi.org/10.1007/BF03027554

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF03027554

Keywords

Search

Navigation