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    Effect of sterilization by gamma radiation on nano-mechanical properties of teeth 
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    Effect of sterilization by gamma radiation on nano-mechanical properties of teeth

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    BRAUEREffectOfSterilization2008POST.pdf (185.4Kb)
    Volume
    24
    Pagination
    1137 - 1140 (4)
    DOI
    10.1016/j.dental.2008.02.016
    Journal
    Dental Materials
    Issue
    8
    ISSN
    0109-5641
    Metadata
    Show full item record
    Abstract
    Objectives: Extracted teeth used in dental research need to be considered infective and hence be sterilized without the materials' properties being altered. This study examined the effect of gamma radiation on the nano-mechanical properties of dentin and enamel of extracted human third molars. Methods: Whole teeth were sterilized using gamma radiation doses of 7kGy and 35kGy, respectively; teeth of the control group were not treated with gamma radiation. Crowns were sectioned occlusally and polished. Elastic modulus and hardness were tested using atomic force microscopy with nano-indentations under wet conditions. Results: The authors found no significant dose-response relationship in elastic modulus or hardness in either dentin or enamel. Significance: Nano-indentation is a common technique for the determination of local mechanical properties in biological hard tissues. Gamma radiation is an efficient way to sterilize extracted teeth while alteration of dentin and enamel mechanical properties are minimized.
    Authors
    Brauer, DS; Saeki, K; Hilton, JF; Marshall, GW; Marshall, SJ
    URI
    http://qmro.qmul.ac.uk/xmlui/handle/123456789/1001
    Collections
    • Centre for Oral Bioengineering [541]
    Language
    English
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