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Related Experiment Videos

Cinnamic aldehyde in toothpaste. 1. Clinical aspects and patch tests.

B Magnusson1, D S Wilkinson

  • 1Department of Dermatology, University of Lund, General Hospital, Malmö, Sweden.

Contact Dermatitis
|January 1, 1975
PubMed
Summary
This summary is machine-generated.

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Cinnamon flavoring in a new toothpaste caused oral symptoms in multiple patients. Cinnamic aldehyde, a key cinnamon component, was identified as the likely allergen through patch testing.

Area of Science:

  • Oral medicine
  • Dermatology
  • Allergology

Background:

  • Cinnamon is a common flavoring agent with known contact dermatitis risks, primarily in occupational settings.
  • Rarely reported oral or cosmetic reactions to cinnamon exist.
  • A novel spicy toothpaste formulation incorporated cinnamon.

Observation:

  • Eight patients presented with oral symptoms linked to the new cinnamon-flavored toothpaste.
  • An additional eight patients with similar symptoms were identified.
  • Independent clinical observations in Buckinghamshire and Malmö corroborated the findings.

Findings:

  • Patch testing revealed positive reactions to 1% cinnamic aldehyde in 15 of 16 patients.
  • Cinnamic aldehyde, a primary component of cinnamon, is implicated as the allergen.

Related Experiment Videos

  • Few patients reacted to balsam of Peru, suggesting specificity to cinnamon components.

    • Implications:

    • Highlights the potential for cinnamon flavoring in oral hygiene products to cause allergic contact stomatitis.
    • Underscores the importance of identifying specific allergens in consumer products.
    • Suggests cinnamon and its derivatives require careful consideration in food and cosmetic formulations to prevent adverse reactions.