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    The effect of ethylene glycol analogs on mechanical properties of moist, demineralized dentin matrix

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    Authors
    Callison, Terry E.
    Issue Date
    2002-05
    URI

    http://hdl.handle.net/10675.2/623145
    
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    Abstract
    This study evaluated the effect of ethylene glycol analogs on the modulus of elasticity (E) and ultimate tensile strength (UTS) of moist, demineralized dentin matrix. · Six "I" beam and fifty-two hourglass shaped specimens cut from dentin discs (0.5mm thick) were demineralized in 0.5M EDT~ yielding dentin matrix specimens used to measure E and UTS, respectively A universal microtensile testing machine measured the E and UTS of specimens immersed in distilled water, ethylene glycol, 2-methoxyethanol, and ·I,2-dimethoxyethane. The E and UTS values were compared with. the Hoy's solubility parameters for hydrogen bonding (oh), polar (op), an~ dispersive forces (od) of these solvents. Analysis indicated significant (p~<0. 00 I) relationships among the solvents for both E and UTS; and that oh is the most significant (p<0.05) solubility parameter. Water (highest oh) produced the lowest E and UTS. 1,2-Dimethoxyethane (lowest oh) produced the highest E and UTS. The results support our hypothesis that E and UTS of moist, demineralized dentin is inversely proportional to oh of applied solvents.
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    School of Graduate Studies
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