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Progressive decrease in dentine permeability following cavity preparation.

D H Pashley, E E Kepler, E C Williams

    Archives of Oral Biology
    |January 1, 1983
    PubMed
    Summary
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    Dentine permeability significantly decreases within one week after tooth cavity preparation. This reduction in dentine permeability requires an intact dental pulp and is not caused by restoration leakage.

    Area of Science:

    • Dental science
    • Biomaterials science
    • Physiology

    Background:

    • Dentine permeability is a critical factor in dental health and restorative procedures.
    • Understanding changes in dentine permeability post-cavity preparation is essential for predicting treatment outcomes.

    Purpose of the Study:

    • To longitudinally assess changes in dentine permeability following cavity preparation in vivo.
    • To investigate the influence of an intact pulp and temporary restorations on dentine permeability dynamics.

    Main Methods:

    • Employed two distinct methods for measuring dentine permeability: isotope clearance and fluid filtration.
    • Conducted measurements longitudinally in cavities prepared in dog teeth under in vivo conditions.

    Main Results:

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    • Both isotope clearance and fluid filtration techniques demonstrated a substantial reduction in dentine permeability.
    • This significant decrease in permeability was observed within the first week after cavity preparation.
    • The observed phenomenon was dependent on an intact dental pulp, ruling out microleakage from temporary restorations.

    Conclusions:

    • Dentine permeability undergoes a rapid and significant reduction post-cavity preparation.
    • The integrity of the dental pulp plays a crucial role in modulating dentine permeability.
    • The findings suggest a biological response rather than a restorative artifact influencing dentine sealing.