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Investigation of the Nanomechanical and Tribological Properties of Tooth-Fillings Materials

[+] Author Affiliations
Marwan Al-Haik, Shane Trinkle, Daniel Garcia, Fan Yang, Ulises Martinez

University of New Mexico, Albuquerque, NM

Hartono Sumali

Sandia National Laboratories, Albuquerque, NM

Scott Miltenberger

Dental Clinic, Albuquerque, NM

Paper No. IMECE2007-42975, pp. 145-151; 7 pages
  • ASME 2007 International Mechanical Engineering Congress and Exposition
  • Volume 2: Biomedical and Biotechnology Engineering
  • Seattle, Washington, USA, November 11–15, 2007
  • Conference Sponsors: ASME
  • ISBN: 0-7918-4296-7 | eISBN: 0-7918-3812-9
  • Copyright © 2007 by ASME


This study utilizes novel characterization techniques nanoindentation and nanoscratch for testing both the human enamel and dentine together with two biocompatible dental filling materials; epoxy nanocomposite and silver amalgam. Nanoindentation tests were performed to obtain accurate hardness and reduced modulus values for the enamel, dentin and two different fillers. We utilized Nano-scratch tests to obtain critical load in scratch test and resistance to sliding wear. Testing showed the silver amalgam filling has a higher modulus of elasticity, hardness and wear resistance compared to the nanocomposite. The novel mechanical characterization techniques utilized might assist in better understanding the mechanical behavior of the dental fillers and thus facilitate the design of robust fillers with excellent mechanical properties.

Copyright © 2007 by ASME



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