[The oral mucosa and delayed hypersensitivity].

Area of Science:

• Oral medicine
• Allergology
• Dermatology

Context:

• Buccal mucosal allergies are infrequently diagnosed.
• The oral environment presents unique challenges for allergen sensitization.
• Subjective symptoms often dominate clinical presentation.

Purpose:

• To review the etiology and clinical presentation of buccal mucosal allergies.
• To highlight the rarity and diagnostic challenges associated with oral allergies.
• To discuss both extradental and dental causes.

Summary:

• Buccal mucosal allergies are rare, with symptoms like hardening, hypersalivation, and burning mouth syndrome.
• Etiologies include cosmetic/medicinal products and dental materials like mercury alloys and resins.
• The buccal environment is less conducive to sensitization, leading to atypical presentations.

Impact:

• Enhances understanding of rare oral allergic reactions.
• Provides insights into differential diagnosis for oral symptoms.
• Informs clinicians about potential allergens in dental and cosmetic products.