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    Short-term effect of low-intensity pulsed ultrasound on an ex-vivo 3-D tooth culture

    Access Status
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    Authors
    Al-Daghreer, S.
    Doschak, Michael
    Sloan, A.
    Major, P.
    Heo, G.
    Scurtescu, C.
    Tsui, Y.
    El-Bialy, T.
    Date
    2013
    Type
    Journal Article
    
    Metadata
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    Citation
    Al-Daghreer, Saleh and Doschak, Michael and Sloan, Alastair J. and Major, Paul W. and Heo, Giseon and Scurtescu, Cristian and Tsui, Ying Y. and El-Bialy, Tarek. 2013. Short-term effect of low-intensity pulsed ultrasound on an ex-vivo 3-D tooth culture. Ultrasound in Medicine and Biology. 39 (6): pp. 1066-1074.
    Source Title
    Ultrasound in Medicine and Biology
    DOI
    10.1016/j.ultrasmedbio.2012.12.005
    ISSN
    0301-5629
    URI
    http://hdl.handle.net/20.500.11937/32709
    Collection
    • Curtin Research Publications
    Abstract

    We investigated the short-term effect of LIPUS on human dentin-pulp complex in vitro. We collected sixty-three premolars from patients who needed the extraction. The premolars were sectioned transversely into 600-µm-thick slices, and then divided into five groups according to LIPUS application time (control, 5, 10, 15 and 20 min). LIPUS transducer produced an incident intensity of 30 mW/cm2. After 24 h, tissue was harvested for histomorphometrical analysis and RT-PCR (Genes of interest: Collagen I, DMP1, DSPP, TGF ß1, RANKL and OPG). Histomorphometric analysis showed no significant difference among the five groups in the odontoblast count and predentin thickness. RT-PCR demonstrated no expression of TGF ß1, low amounts of DSPP, a twofold increase in collagen I expression in the 5- and 10-minute LIPUS groups and a threefold increase in DMP1 expression in the 10-minute LIPUS group. LIPUS application was stimulatory to the dentin-pulp complex in vitro and increased the expression of collagen I and DMP1.

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