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Impression material consistency and peripheral tissues.

C J Thomas1

  • 1Department of Prosthetic Dentistry, University of Sydney.

Australian Dental Journal
|April 1, 1990
PubMed
Summary
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Alginate impression material consistency significantly impacts its extension into the sulcus and lingual areas. Buccal extension is more influenced by facial tissues, suggesting careful material selection for dental impressions.

Area of Science:

  • Dental Materials Science
  • Clinical Dentistry
  • Impression Techniques

Background:

  • Alginate impression materials are widely used in dentistry.
  • Understanding their behavior in vivo is crucial for accurate impressions.
  • Factors influencing material extension require further investigation.

Purpose of the Study:

  • To evaluate the in vivo behavior of three alginate impression materials.
  • To measure the extension of alginate materials in buccal, lingual, and sulcus directions.
  • To determine the influence of material consistency and oral tissues on impression accuracy.

Main Methods:

  • Three alginate impression materials of varying consistencies were tested in vivo.
  • Impressions were sectioned, and peripheral extension was measured buccally, lingually, and into the sulcus.

Related Experiment Videos

  • Statistical analysis was performed to compare material behaviors.

    • Main Results:

    • Significant differences in inferior sulcus extension were observed among all materials.
    • Buccal dimension showed minimal statistically significant differences between materials.
    • One material exhibited significantly greater lingual extension compared to the others.

    Conclusions:

    • Material consistency is a primary determinant of inferior and lingual alginate extension.
    • Facial tissues, likely muscles, exert a restraining influence on buccal extension.
    • Dentists should consider material consistency and potential tissue interactions when selecting alginate for impressions.