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Related Experiment Videos

The combined reversible hydrocolloid/irreversible hydrocolloid impression system

D C Appleby, C H Pameijer, J Boffa

    The Journal of Prosthetic Dentistry
    |January 1, 1980
    PubMed
    Summary
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    Dentloid, a modified reversible hydrocolloid, successfully bonded with irreversible hydrocolloids. Some combinations showed clinically acceptable dimensional stability, offering a practical alternative for dental impressions.

    Area of Science:

    • Dental Materials Science
    • Impression Techniques

    Background:

    • Reversible hydrocolloids present challenges in achieving accurate dental impressions.
    • Bonding reversible hydrocolloids with irreversible hydrocolloids could potentially improve impression accuracy and handling.

    Purpose of the Study:

    • To evaluate the bonding capabilities and dimensional stability of Dentloid, a modified reversible hydrocolloid, when combined with irreversible hydrocolloids.
    • To assess the clinical practicality of this combined impression technique.

    Main Methods:

    • Dentloid was tested in combination with three different irreversible hydrocolloids.
    • Bond strength and dimensional stability of the resulting impression materials were measured.
    • Clinical usability was assessed qualitatively.

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    Main Results:

    • Dentloid demonstrated bonding with all three tested irreversible hydrocolloids, with varying bond strengths.
    • Two conventional reversible hydrocolloids failed to bond effectively with irreversible hydrocolloids.
    • The combination exhibiting the lowest bond strength also had the lowest dimensional stability.
    • Two Dentloid/irreversible hydrocolloid combinations achieved clinically acceptable dimensional stability.

    Conclusions:

    • The modified Dentloid reversible hydrocolloid can bond with irreversible hydrocolloids, offering a potentially improved impression technique.
    • Specific combinations of Dentloid and irreversible hydrocolloids provide clinically acceptable dimensional stability.
    • Further verification of dimensional stability is recommended for untested combinations before clinical application.
    • The combined technique is practical and overcomes limitations of traditional reversible hydrocolloid methods, provided laboratory procedures are strictly followed.