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Related Experiment Videos

Intraoral vesicles occurring after alginate impressions.

C D Rice1, B F Barker, T Kestenbaum

  • 1Department of Oral Diagnosis/Radiology, University of Missouri-Kansas City School of Dentistry.

Oral Surgery, Oral Medicine, and Oral Pathology
|November 1, 1992
PubMed
Summary

Intraoral vesicles developed in dental students after alginate impressions. The cause of these oral lesions remains unknown, necessitating further research into potential allergic reactions or contamination.

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Area of Science:

  • Oral medicine
  • Dental materials science

Background:

  • Alginate impression materials are widely used in dentistry.
  • A significant number of dental students developed intraoral vesicles following alginate impressions.

Purpose of the Study:

  • To investigate the etiology of intraoral vesicles that developed in dental students after alginate impressions.

Main Methods:

  • Clinical observation of lesions, histopathological examination of one lesion, patch testing for allergy, and microbial culturing of lesions and alginate powder.
  • Histopathology suggested contact allergy, but patch tests were negative.

Main Results:

  • 47 out of 227 dental students developed intraoral vesicles, typically solitary, clear, and located on the vermilion border of the lips.

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  • Lesions appeared 24-48 hours post-impression and resolved spontaneously in 2-5 days.
  • Microbial cultures from lesions and alginate powder showed some similar organisms, but a definitive link could not be established.

    • Conclusions:

    • The exact cause of the intraoral vesicles remains undetermined.
    • Further research is required to elucidate the etiology of these reactions to alginate impressions.