期刊
JOURNAL OF BIOMECHANICS
卷 35, 期 7, 页码 995-998出版社
ELSEVIER SCI LTD
DOI: 10.1016/S0021-9290(02)00039-8
关键词
teeth; nanoindentation; atomic force microscopy; mineral dissolution; storage
资金
- NIDCR NIH HHS [P01DE09859, DE13029] Funding Source: Medline
This study determined changes in nanomechanical properties of dentin and enamel during storage in deionized water, calcium chloride buffered saline solution and Hank's balanced salts solution (HBSS). Atomic force microscopy based nanoindentation showed that storing teeth in deionized water or CaCl2-solution resulted in a large decrease in elastic modulus and hardness. At I day a decrease in the mechanical properties values of up to 20% and 30% was observed for enamel and dentin, respectively. After 1 week, mechanical properties dropped below 50% of their starting Values, which is attributed to a demineralization process during storage. In contrast, storing teeth in HBSS did not significantly alter the mechanical properties for a time interval of 2 weeks. The use of HBSS for storage of samples from teeth is recommended. (C) 2002 Elsevier Science Ltd. All rights reserved.
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