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Related Experiment Videos

Frictional changes in force values caused by saliva substitution.

K L Baker, L G Nieberg, A D Weimer

    American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
    |April 1, 1987
    PubMed
    Summary

    Introducing artificial saliva significantly reduces frictional forces between orthodontic wires and edgewise brackets. This finding is crucial for optimizing orthodontic treatment and patient comfort during tooth movement.

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    Area of Science:

    • Biomaterials Science
    • Orthodontics
    • Tribology

    Background:

    • Frictional forces between orthodontic wires and brackets influence treatment efficiency and duration.
    • Understanding the role of the intraoral environment, such as saliva, is critical for predicting clinical outcomes.

    Purpose of the Study:

    • To quantify the impact of artificial saliva on the frictional forces generated between various stainless steel orthodontic wires and an edgewise bracket.
    • To compare these forces in different environmental conditions: dry, glycerin, and artificial saliva substitute.

    Main Methods:

    • Tested stainless steel orthodontic wires (0.018-inch round, 0.020-inch round, 0.018 x 0.025-inch rectangular) in an edgewise bracket (0.022 x 0.028-inch slot).
    • Secured wires using 0.010-inch polyurethane ligatures.

    Related Experiment Videos

  • Measured frictional forces in dry, glycerin, and artificial saliva substitute environments.

    • Main Results:

    • Clinically significant differences in frictional forces were observed across different environmental conditions and wire sizes.
    • The introduction of artificial saliva substitute resulted in a notable reduction of frictional forces.

    Conclusions:

    • Artificial saliva significantly decreases the friction between orthodontic wires and brackets.
    • These findings have implications for improving the predictability and efficiency of orthodontic tooth movement.