AFM Investigation of mechanical properties of dentin

Journal Article · Tue Jan 01 04:00:00 EST 2008 · Israel Journal of Chemistry

DOI:https://doi.org/10.1560/IJC.48.2.65· OSTI ID:965301

Cohen, Sidney R ^[1]; Apter, Nathan ^[2]; Jesse, Stephen ^[1]; Kalinin, Sergei V ^[1]; Barlam, David ^[3]; Peretz, Adi Idit ^[2]; Ziskind, Daniel ^[2]; Wagner, H. Daniel ^[2]

---

1. ORNL
2. Weizmann Institute of Science, Rehovot, Israel
3. Ben Gurion University of the Negev

Mechanical properties of peritubular dentin were investigated using scanning probe microscopy techniques, namely Nanoindentation and Band Excitation. Particular attention was directed to the possible existence of a gradient in these properties moving outward from the tubular lumen to the junction with the intertubular dentin. Finite element analysis showed that the influence of the boundaries is small relative to the effects observed. Thus, these results strongly support the concept of a lowering of modulus and hardness from the tubular exterior to its periphery, which appear to correlate with graded changes in the mineral content.

• Research Organization: Oak Ridge National Laboratory (ORNL); Center for Nanophase Materials Sciences
• Sponsoring Organization: SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 965301
• Journal Information: Israel Journal of Chemistry, Journal Name: Israel Journal of Chemistry Journal Issue: 2 Vol. 48; ISSN ISJCAT; ISSN 0021-2148
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ATOMIC FORCE MICROSCOPY
DENTIN
FINITE ELEMENT METHOD
MECHANICAL PROPERTIES